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CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 720	$ 1,430
LOSS ATTRIBUTABLE TO NON-CONTROLLING INTEREST	0	3
OTHER COMPREHENSIVE INCOME, NET OF TAXES
Pension and other postretirement benefit plan liability adjustments, net of taxes	(4)	4
TOTAL OTHER COMPREHENSIVE LOSS, NET OF TAXES	(4)	4
COMPREHENSIVE INCOME	$ 716	$ 1,437

- Definition

Amount of Net Income (Loss) attributable to noncontrolling interest.

+ References + Details

- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

+ References

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+ Details

CONSOLIDATED STATEMENT OF SHAREHOLDER’S EQUITY (UNAUDITED) - CECONY - USD ($) shares in Millions, $ in Millions	Total	CECONY	Common Stock	Common Stock CECONY	Additional Paid-In Capital CECONY	Retained Earnings	Retained Earnings CECONY	Repurchased Con Edison Stock CECONY	Capital Stock Expense CECONY	Accumulated Other Comprehensive Income/(Loss)	Accumulated Other Comprehensive Income/(Loss) CECONY
Beginning balance (shares) at Dec. 31, 2022			355	235
Beginning Balance at Dec. 31, 2022		$ 16,878		$ 589	$ 7,419		$ 9,890	$ (962)	$ (62)		$ 4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 1,433	604					604
Common stock dividend to Con Edison	(288)	(264)				$ (288)	(264)
Capital contribution by Con Edison		1,675			1,675
Other comprehensive income (loss)	4	(1)								$ 4	(1)
Ending balance (shares) at Mar. 31, 2023			346	235
Ending Balance at Mar. 31, 2023		18,892		$ 589	9,094		10,230	(962)	(62)		3
Beginning balance (shares) at Dec. 31, 2023			345	235
Beginning Balance at Dec. 31, 2023	21,158	19,146		$ 589	9,139		10,440	(962)	(62)		2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	720	694					694
Common stock dividend to Con Edison	(287)	(268)				$ (287)	(268)
Capital contribution by Con Edison		25			25
Other comprehensive income (loss)	(4)									$ (4)
Ending balance (shares) at Mar. 31, 2024			346	235
Ending Balance at Mar. 31, 2024	$ 21,615	$ 19,597		$ 589	$ 9,164		$ 10,866	$ (962)	$ (62)		$ 2

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest.

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Summary of Significant Accounting Policies and Other Matters - Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Accounting Policies [Abstract]
Net income for common stock	$ 720	$ 1,433
Weighted average common shares outstanding – basic (shares)	345.5	352.9
Add: Incremental shares attributable to effect of potentially dilutive securities (shares)	1.3	1.3
Adjusted weighted average common shares outstanding – diluted (shares)	346.8	354.2
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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of contingently issuable shares. Contingently issuable shares are those shares that are issuable for little or no cash contingent on certain conditions being met.

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+ Details

Short-Term Borrowing	3 Months Ended
Short-Term Borrowing	Mar. 31, 2024
Debt Disclosure [Abstract]
Short-Term Borrowing	Short-Term Borrowing In March 2024, CECONY entered into a 364-Day Revolving Credit Agreement (the CECONY Credit Agreement) that replaced a March 2023 CECONY 364-Day Credit Agreement under which banks are committed to provide loans up to $500 million on a revolving credit basis. The CECONY Credit Agreement expires in March 2025 and supports CECONY’s commercial paper program. Loans issued under the CECONY Credit Agreement may also be used for other general corporate purposes. Any borrowings under the CECONY Credit Agreement would generally be at variable interest rates. The banks’ commitments under the CECONY Credit Agreement are subject to certain conditions, including that there be no event of default. The commitments are not subject to maintenance of credit rating levels or the absence of a material adverse change. Upon a change of control of, or upon an event of default by CECONY under the CECONY Credit Agreement, the banks may terminate their commitments, declare any amounts owed by CECONY immediately due and payable. Events of default include, among others, CECONY exceeding at any time of a ratio of consolidated debt to consolidated total capital of 0.65 to 1; CECONY having liens on its assets in an aggregate amount exceeding ten percent of its consolidated net tangible assets, subject to certain exceptions; CECONY or any of its material subsidiaries failing to make one or more payments in respect of material financial obligations (in excess of an aggregate $150 million of debt or derivative obligations other than non-recourse debt); the occurrence of an event or condition which results in the acceleration of the maturity of any material debt (in excess of an aggregate $150 million of debt other than non-recourse debt) or enables the holders of such debt to accelerate the maturity thereof; and other customary events of default. Interest and fees charged reflect CECONY's credit rating. At March 31, 2024, Con Edison had $2,299 million of commercial paper outstanding of which $1,857 million was outstanding under CECONY’s program. The weighted average interest rate at March 31, 2024 was 5.5 percent for both Con Edison and CECONY. At December 31, 2023, Con Edison had $2,288 million of commercial paper outstanding of which $1,903 million was outstanding under CECONY’s program. The weighted average interest rate at December 31, 2023 was 5.6 percent for both Con Edison and CECONY. At March 31, 2024 and December 31, 2023, no loans or letters of credit were outstanding under the Companies’ $2,500 million 2023 Credit Agreement (Credit Agreement) and no loans were outstanding under the CECONY Credit Agreement. The Companies were in compliance with their significant debt covenants at March 31, 2024. In March 2024, the termination date of the Credit Agreement was extended from March 2028 to March 2029. In March 2024, the Companies also entered into a First Amendment to the Credit Agreement that, among other things, amended the mechanics relating to determining the interest rate to be paid with respect to a “term SOFR loan.”

Regulatory Matters - Regulatory Assets (Details) - USD ($) $ in Millions	Mar. 31, 2024	Jan. 01, 2024	Dec. 31, 2023	Jan. 01, 2022
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	$ 5,050		$ 4,607
Regulatory assets – current	210		281
Total Regulatory Assets	5,260		4,888
Environmental remediation costs
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	1,098		1,105
System peak reduction and energy efficiency programs
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	1,046		1,057
COVID - 19 pandemic deferrals
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	827		789
Revenue taxes
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	494		476
Legacy meters
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	436		17
Deferred storm costs
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	190		206
Property tax reconciliation
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	146		169
Deferred derivative losses - long term
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	133		163
Electric vehicle make ready
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	85		73
Pension and other postretirement benefits deferrals
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	73		48
MTA power reliability deferral
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	54		61
Gas service line deferred costs
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	38		43
Unrecognized pension and other postretirement costs
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	4		0
Other
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	426		400
Deferred derivative losses - short term
Regulatory Assets [Line Items]
Regulatory assets – current	202		269
Recoverable energy costs
Regulatory Assets [Line Items]
Regulatory assets – current	8		12
CECONY
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	4,757		4,314
Regulatory assets – current	191		254
CECONY \| Subsidiaries
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	4,757		4,314
Regulatory assets – current	191		254
Total Regulatory Assets	4,948		4,568
CECONY \| Environmental remediation costs \| Subsidiaries
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	1,015		1,022
CECONY \| System peak reduction and energy efficiency programs \| Subsidiaries
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	1,024		1,038
CECONY \| COVID - 19 pandemic deferrals \| Subsidiaries
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	816		782
CECONY \| Revenue taxes \| Subsidiaries
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	473		455
CECONY \| Legacy meters \| Subsidiaries
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	420		0
CECONY \| Deferred storm costs \| Subsidiaries
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	100		115
CECONY \| Property tax reconciliation \| Subsidiaries
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	146		169
CECONY \| Deferred derivative losses - long term \| Subsidiaries
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	121		148
CECONY \| Electric vehicle make ready \| Subsidiaries
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	79		68
CECONY \| Pension and other postretirement benefits deferrals \| Subsidiaries
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	70		39
CECONY \| MTA power reliability deferral \| Subsidiaries
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	54		61
CECONY \| Gas service line deferred costs \| Subsidiaries
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	38		43
CECONY \| Unrecognized pension and other postretirement costs \| Subsidiaries
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	3		0
CECONY \| Other \| Subsidiaries
Regulatory Assets [Line Items]
Regulatory assets – noncurrent	398		374
CECONY \| Deferred derivative losses - short term \| Subsidiaries
Regulatory Assets [Line Items]
Regulatory assets – current	191		253
CECONY \| Recoverable energy costs \| Subsidiaries
Regulatory Assets [Line Items]
Regulatory assets – current	$ 0		$ 1
Consolidated Edison Company of New York, Inc. And Orange And Rockland \| Legacy meters
Regulatory Assets [Line Items]
Cost of the program, recovery period (in years)		15 years		12 years

Assets and Liabilities Held-for-Sale (Tables)

3 Months Ended

Mar. 31, 2024

Discontinued Operations and Disposal Groups [Abstract]

Schedule of Carrying Amounts of Assets and Liabilities Held For Sale

The following table shows the pre-tax operating income for the Clean Energy Businesses. The 2023 period shown is through the date of the sale of the Clean Energy Businesses; there is no applicable data for the three months ended March 31, 2024.


						For the Three Months Ended March 31,
(Millions of Dollars)						2023
Pre-tax operating income						$25
Pre-tax operating income, excluding non-controlling interest						$21

At March 31, 2024, the carrying amounts of the major classes of assets and liabilities of Broken Bow II that are expected to be sold are presented on a held-for-sale basis, and accordingly exclude net deferred tax liability balances, as follows:


(Millions of Dollars)			March 31, 2024
ASSETS
CURRENT ASSETS
Cash and temporary cash investments			$1


Accrued unbilled revenue			1

Restricted cash			5

Prepayments			1
Other current assets			2
TOTAL CURRENT ASSETS			10

NON-UTILITY PLANT
Non-utility property, net accumulated depreciation			76

NET PLANT			76
OTHER NONCURRENT ASSETS

Intangible assets less accumulated amortization			71
Operating lease right-of-use asset			7



TOTAL OTHER NONCURRENT ASSETS			78
TOTAL ASSETS			$164


(Millions of Dollars)			March 31, 2024
LIABILITIES
CURRENT LIABILITIES
Long-term debt due within one year			$2




Operating lease liabilities			2

Other current liabilities			6
TOTAL CURRENT LIABILITIES			10
NONCURRENT LIABILITIES
Asset retirement obligations			3

Operating lease liabilities			5

TOTAL NONCURRENT LIABILITIES			8
LONG-TERM DEBT			59
TOTAL LIABILITIES			$77

- Definition

Tabular disclosure of information related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.

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+ Details

Summary of Significant Accounting Policies and Other Matters - Changes in Accumulated Other Comprehensive Income/(Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 21,158	$ 20,889
TOTAL OTHER COMPREHENSIVE INCOME/(LOSS), NET OF TAXES	(4)	4
Ending balance	21,615	20,843
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	21,158
TOTAL OTHER COMPREHENSIVE LOSS, NET OF TAXES	(4)	4
Ending Balance	21,615
AOCI Attributable to Parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	22	22
TOTAL OTHER COMPREHENSIVE INCOME/(LOSS), NET OF TAXES	(4)	4
Ending balance	18	26
Accumulated Defined Benefit Plans Adjustment Attributable to Parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
OCI before reclassifications, net of tax	(4)	0
Amounts reclassified from accumulated OCI related to pension plan liabilities, net of tax	0	4
TOTAL OTHER COMPREHENSIVE INCOME/(LOSS), NET OF TAXES	(4)	4
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest
AOCI Attributable to Parent, Net of Tax [Roll Forward]
OCI before reclassifications, tax	2
CECONY
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
TOTAL OTHER COMPREHENSIVE INCOME/(LOSS), NET OF TAXES		(1)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	19,146	16,878
TOTAL OTHER COMPREHENSIVE LOSS, NET OF TAXES	0	(1)
Ending Balance	19,597	18,892
CECONY \| AOCI Attributable to Parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
TOTAL OTHER COMPREHENSIVE INCOME/(LOSS), NET OF TAXES		(1)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	2	4
Ending Balance	2	3
CECONY \| AOCI Attributable to Parent \| Subsidiaries
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	2	4
Ending Balance	2	3
CECONY \| Accumulated Defined Benefit Plans Adjustment Attributable to Parent \| Subsidiaries
AOCI Attributable to Parent, Net of Tax [Roll Forward]
OCI before reclassifications, net of tax	0	(1)
Amounts reclassified from accumulated OCI related to pension plan liabilities, net of tax	0	0
TOTAL OTHER COMPREHENSIVE LOSS, NET OF TAXES	$ 0	$ (1)

Regulatory Matters - Schedule of Regulatory Assets Not Earning a Return (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Regulatory Assets [Line Items]
Regulatory assets not earning return	$ 2,311	$ 2,347
Subsidiaries \| CECONY
Regulatory Assets [Line Items]
Regulatory assets not earning return	2,176	2,209
Environmental remediation costs
Regulatory Assets [Line Items]
Regulatory assets not earning return	1,098	1,105
Environmental remediation costs \| Subsidiaries \| CECONY
Regulatory Assets [Line Items]
Regulatory assets not earning return	1,015	1,022
Revenue taxes
Regulatory Assets [Line Items]
Regulatory assets not earning return	509	490
Revenue taxes \| Subsidiaries \| CECONY
Regulatory Assets [Line Items]
Regulatory assets not earning return	488	470
COVID-19 deferral for uncollectible accounts receivable
Regulatory Assets [Line Items]
Regulatory assets not earning return	324	291
COVID-19 deferral for uncollectible accounts receivable \| Subsidiaries \| CECONY
Regulatory Assets [Line Items]
Regulatory assets not earning return	318	288
Deferred derivative losses - short term
Regulatory Assets [Line Items]
Regulatory assets not earning return	202	269
Deferred derivative losses - short term \| Subsidiaries \| CECONY
Regulatory Assets [Line Items]
Regulatory assets not earning return	191	253
Deferred derivative losses - long term
Regulatory Assets [Line Items]
Regulatory assets not earning return	133	163
Deferred derivative losses - long term \| Subsidiaries \| CECONY
Regulatory Assets [Line Items]
Regulatory assets not earning return	121	148
Unrecognized pension and other postretirement costs
Regulatory Assets [Line Items]
Regulatory assets not earning return	4	0
Unrecognized pension and other postretirement costs \| Subsidiaries \| CECONY
Regulatory Assets [Line Items]
Regulatory assets not earning return	3	0
Other
Regulatory Assets [Line Items]
Regulatory assets not earning return	41	29
Other \| Subsidiaries \| CECONY
Regulatory Assets [Line Items]
Regulatory assets not earning return	$ 40	$ 28

Financial Information by Business Segment

3 Months Ended

Mar. 31, 2024

Segment Reporting [Abstract]

Financial Information by Business Segment

Con Edison’s principal business segments are CECONY’s regulated utility activities, O&R’s regulated utility activities and Con Edison Transmission. CECONY’s principal business segments are its regulated electric, gas and steam utility activities. The financial data for the business segments for the three months ended March 31, 2024 and 2023 were as follows:


	For the Three Months Ended March 31,
	Operating revenues		Inter-segment revenues		Depreciation and amortization		Operating income/(loss)
(Millions of Dollars)	2024	2023	2024	2023	2024	2023	2024	2023
CECONY
Electric	$2,441	$2,356	$4	$5	$370	$343	$240	$194
Gas	1,243	1,291	2	2	114	105	615	559
Steam	287	306	19	18	26	25	134	56
Consolidation adjustments	—	—	(25)	(25)	—	—	—	—
Total CECONY	$3,971	$3,953	$—	$—	$510	$473	$989	$809
O&R
Electric	$195	$182	$—	$—	$20	$18	$14	$1
Gas	113	139	—	—	9	7	42	40
Total O&R	$308	$321	$—	$—	$29	$25	$56	$41
Clean Energy Businesses (a)	—	129	—	—	—	—	—	36
Con Edison Transmission	1	1	—	—	—	—	(3)	(2)
Other (b)	—	(1)	—	—	—	1	(31)	855
Total Con Edison	$4,280	$4,403	$—	$—	$539	$499	$1,011	$1,739

(a) On March 1, 2023, Con Edison completed the sale of all of the stock of the Clean Energy Businesses. As a result of this sale, the Clean Energy Businesses are no longer a principal segment. See Note Q and Note R.

(b) Other includes the parent company, Con Edison’s tax equity investments, the deferred project held for sale and consolidation adjustments.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-22

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-15

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 31
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-31

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-42

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 40
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-40

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//280/tableOfContent

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 26
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-26

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
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-Paragraph 34
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-34

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-41

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-Paragraph 21
-Subparagraph (a)
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-URI https://asc.fasb.org//1943274/2147482810/280-10-50-21

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-21

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-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (e)
-Publisher FASB
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+ Details

Summary of Significant Accounting Policies and Other Matters - Reconciliation of Cash, Temporary Investments and Restricted Cash (Details) $ in Millions	Mar. 31, 2024 USD ($) MWh	Dec. 31, 2023 USD ($)	Mar. 31, 2023 USD ($)
Cash and Cash Equivalents [Line Items]
Cash and temporary cash investments	$ 169	$ 1,189	$ 771
Restricted cash	6		2
Total cash, temporary cash investments and restricted cash	$ 175		$ 773
Electric Energy (MWh)
Cash and Cash Equivalents [Line Items]
Notional amount \| MWh	31,374,625
Broken Bow II \| Electric Energy (MWh) \| Clean Energy Businesses
Cash and Cash Equivalents [Line Items]
Notional amount \| MWh	75

Assets and Liabilities Held-for-Sale

3 Months Ended

Mar. 31, 2024

Discontinued Operations and Disposal Groups [Abstract]

Assets and Liabilities Held-for-Sale

Dispositions

During the first nine months of 2022, Con Edison considered strategic alternatives with respect to the Clean Energy Businesses. On October 1, 2022, following the conclusion of such review and to allow for continued focus on the Utilities and their clean energy transition, Con Edison entered into a purchase and sale agreement pursuant to which Con Edison agreed to sell the Clean Energy Businesses to RWE Renewables Americas, LLC, a subsidiary of RWE for a total of $6,800 million, subject to closing adjustments. On March 1, 2023, Con Edison completed the sale of all of the stock of the Clean Energy Businesses to RWE for $3,993 million. The preliminary purchase price at closing was adjusted (i) upward for certain cash and cash equivalents, (ii) downward for certain indebtedness and debt-like items, (iii) downward for certain transaction expenses, (iv) downward to the extent that the net working capital varied from a set target, (v) upward to the extent that capital investments incurred prior to the closing of the transaction varied from a set budget, and (vi) downward by the value allocated to Broken Bow II, a project that was not able to be conveyed to RWE upon closing of the transaction. The process to finalize the purchase price was completed during the second quarter of 2024. The final purchase price was subject to customary adjustments for timing differences and a final valuation report, among other factors. The transaction was completed at arm’s length and RWE was not, and will not be, considered a related party to Con Edison.

Con Edison's preliminary gain on the sale of the Clean Energy Businesses was $855 million ($791 million, after tax) for the three months ended March 31, 2023, and $865 million ($767 million after tax) for the year ended December 31, 2023. Cumulatively through March 31, 2024 the gain on the sale of the Clean Energy Businesses was $835 million ($745 million, after tax), reflecting a downward adjustment of $30 million ($22 million after-tax) for the three months then ended, resulting from certain customary closing adjustments. The portion of the gain attributable to the non-controlling interest retained in certain tax-equity projects was not material. The sale included all assets, operations and projects of the Clean Energy Businesses with the exception of tax equity interests in three projects, described below, and one deferred project, Broken Bow II, a 75MW nameplate capacity wind power project located in Nebraska. See Note R. Transfer of the project depends on one outstanding counterparty consent, and if and when such consent is obtained within two years of the sale of the Clean Energy Businesses, i.e., by February 28, 2025, the project will transfer and the corresponding value, subject to adjustment, will be paid to Con Edison. RWE Renewables Americas, LLC operates the facility on behalf of Con Edison pursuant to certain service agreements, for which the fees are not material.

Con Edison retained the Clean Energy Businesses' tax equity investment interest in the Crane solar project and another tax equity investment interest in two solar projects located in Virginia. These tax equity partnerships produced renewable energy tax credits that can be used to reduce Con Edison’s federal income tax. These tax credits are subject to recapture, in whole or in part, if the assets are sold within a five-year period beginning on the date on which the assets are placed in service. Con Edison will continue to employ HLBV accounting for its interests in these tax equity partnerships. The combined carrying value of the retained tax equity interests is approximately $7 million at March 31, 2024.

Con Edison also retained any post-sale deferred income taxes (federal and state income taxes, including tax attributes), any valuation allowances associated with the deferred tax assets, all current federal taxes and New York State taxes and the estimated liability for uncertain tax positions. The unamortized deferred investment tax credits of the Clean Energy Businesses were recognized in full upon the completion of the sale of the Clean Energy Businesses.

Concurrent with entering into the purchase and sale agreement, Con Edison incurred costs in the normal course of the sale process. Transaction costs of $11 million ($8 million after-tax) were recorded in the first three months of 2023, and were immaterial for the first three months of 2024. Also, depreciation and amortization expense of approximately $41 million ($28 million after-tax) were not recorded on the assets of the Clean Energy Businesses in 2023 through the closing of the transaction.

Following the sale of the Clean Energy Businesses and pursuant to a reimbursement and indemnity agreement with RWE, Con Edison remains responsible for certain potential costs related to a battery storage project located in Imperial County, California. Con Edison's exposure under the agreement could range up to approximately $172 million. As of March 31, 2024, no material amounts were recorded as liabilities on Con Edison's consolidated balance sheet related to this agreement.


						For the Three Months Ended March 31,
(Millions of Dollars)						2023
Pre-tax operating income						$25
Pre-tax operating income, excluding non-controlling interest						$21

Assets and Liabilities Held-for-Sale

On March 1, 2023, Con Edison completed the sale of all of the stock of the Clean Energy Businesses. See Note Q. The sale included all assets, operations and projects of the Clean Energy Businesses with the exception of tax equity interests in three projects and one deferred project, Broken Bow II, a 75 MW nameplate capacity wind power project located in Nebraska. Transfer of the project from Con Edison to RWE depends on one outstanding counterparty consent, and if and when such consent is obtained within two years of the sale of the Clean Energy Businesses, i.e., by February 28, 2025, the project will transfer. RWE Renewables Americas, LLC operates the facility on behalf of Con Edison pursuant to certain service agreements for which the fees are not material.


(Millions of Dollars)			March 31, 2024
ASSETS
CURRENT ASSETS
Cash and temporary cash investments			$1


Accrued unbilled revenue			1

Restricted cash			5

Prepayments			1
Other current assets			2
TOTAL CURRENT ASSETS			10

NON-UTILITY PLANT
Non-utility property, net accumulated depreciation			76

NET PLANT			76
OTHER NONCURRENT ASSETS

Intangible assets less accumulated amortization			71
Operating lease right-of-use asset			7



TOTAL OTHER NONCURRENT ASSETS			78
TOTAL ASSETS			$164


(Millions of Dollars)			March 31, 2024
LIABILITIES
CURRENT LIABILITIES
Long-term debt due within one year			$2




Operating lease liabilities			2

Other current liabilities			6
TOTAL CURRENT LIABILITIES			10
NONCURRENT LIABILITIES
Asset retirement obligations			3

Operating lease liabilities			5

TOTAL NONCURRENT LIABILITIES			8
LONG-TERM DEBT			59
TOTAL LIABILITIES			$77

Dispositions - Pre-Tax Operating Income (Details) - Clean Energy Businesses - Disposal Group, Held-for-sale, Not Discontinued Operations $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Pre-tax operating income	$ 25
Pre-tax operating income, excluding non-controlling interest	$ 21

New Financial Accounting Standards	3 Months Ended
New Financial Accounting Standards	Mar. 31, 2024
Accounting Changes and Error Corrections [Abstract]
New Financial Accounting Standards	New Financial Accounting Standards In March 2024, the SEC issued a final rule, The Enhancement and Standardization of Climate-Related Disclosures for Investors, that requires registrants to provide climate-related disclosures in annual reports. The rule was subjected to litigation upon its release, and multiple challenges to the rule are currently pending with the United States Court of Appeals for the Eight Circuit. As a result, the SEC has temporarily stayed its rule pending judicial review. The results of the legal challenges and potential SEC actions may materially alter the terms of the rule as described below. Beginning with the 2025 annual report, the Companies would be required to provide additional disclosures in the Management Discussion and Analysis (MD&A) section of the SEC Form 10-K, and in the footnotes to the financial statements. The MD&A disclosures would describe material climate-related risks and their impacts, as well as board oversight of such risks. The footnote disclosures would quantify the impacts of severe weather events and other natural conditions, if material, and provide additional qualitative disclosures. Finally, the rule creates a new section of annual reports related to Scope 1 and Scope 2 greenhouse gas emission disclosures, beginning with the 2026 annual report. If any of the greenhouse gases specified in the rule is individually material, that would need to be separately disclosed. Qualitative disclosures related to the methodology, significant inputs and assumptions used to calculate GHG emissions are also required. The greenhouse gas emission disclosures would be subject to limited and then reasonable assurance for years beginning in 2029 and 2033, respectively. The Companies are evaluating the requirements of the final rule, and closely monitoring legal developments. The Companies do not expect the final rule to have a material impact on results of operations, financial position, or liquidity. However, there are substantial disclosure requirements and the Companies have cross-functional working groups assessing the implications and implementing best practices.

- Definition

The entire disclosure for change in accounting principle. Includes, but is not limited to, nature, reason, and method of adopting amendment to accounting standards or other change in accounting principle.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
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-Name Accounting Standards Codification
-Section 65
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Reference 25: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 20
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (f)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483194/926-20-65-2

Reference 26: http://www.xbrl.org/2003/role/disclosureRef
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Reference 27: http://www.xbrl.org/2003/role/disclosureRef
-Topic 926
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-Paragraph 2
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-URI https://asc.fasb.org//1943274/2147483194/926-20-65-2

Reference 28: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480530/250-10-S99-6

Reference 29: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-Publisher FASB
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Reference 30: http://www.xbrl.org/2003/role/disclosureRef
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Reference 31: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
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Reference 33: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
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Reference 34: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481925/310-20-65-2

+ Details

Capitalization (Tables)

3 Months Ended

Mar. 31, 2024

Debt Disclosure [Abstract]

Carrying Amounts and Fair Values of Long-Term Debt

The carrying amounts and fair values of long-term debt at March 31, 2024 and December 31, 2023 were:


(Millions of Dollars)	2024		2023
Long-Term Debt (including current portion) (a)	Carrying Amount	Fair Value	Carrying Amount		Fair Value
Con Edison	$22,179	$20,101	$22,177	(b)	$20,525	(b)
CECONY	$21,062	$19,114	$21,060		$19,517

(a)Amounts shown are net of unamortized debt expense and unamortized debt discount of $221 million and $213 million for Con Edison and CECONY, respectively, as of March 31, 2024 and $222 million and $215 million for Con Edison and CECONY, respectively, as of December 31, 2023.

(b)Amounts shown exclude the debt of Broken Bow II, a deferred project that was classified as held for sale as of December 31, 2023. The carrying value and fair value of Broken Bow II's long-term debt, including the current portion, as of March 31, 2024 was $62 million and $57 million, respectively. On March 1, 2023, Con Edison completed the sale of all of the stock of the Clean Energy Businesses. See Note Q and Note R.

Capitalization

3 Months Ended

Mar. 31, 2024

Debt Disclosure [Abstract]

Capitalization

The carrying amounts and fair values of long-term debt at March 31, 2024 and December 31, 2023 were:


(Millions of Dollars)	2024		2023
Long-Term Debt (including current portion) (a)	Carrying Amount	Fair Value	Carrying Amount		Fair Value
Con Edison	$22,179	$20,101	$22,177	(b)	$20,525	(b)
CECONY	$21,062	$19,114	$21,060		$19,517

The fair values of the Companies' long-term debt have been estimated primarily using available market information and at March 31, 2024 are classified as Level 2 liabilities. See Note O.

Capitalization - Carrying Amounts and Fair Values of Long-Term Debt (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Unamortized debt expense	$ 221	$ 222
Carrying Amount
Debt Instrument [Line Items]
Long-term debt (including current portion)	22,179	22,177
Fair Value
Debt Instrument [Line Items]
Long-term debt (including current portion)	20,101	20,525
CECONY \| Subsidiaries
Debt Instrument [Line Items]
Unamortized debt discount	213	215
CECONY \| Carrying Amount \| Subsidiaries
Debt Instrument [Line Items]
Long-term debt (including current portion)	21,062	21,060
CECONY \| Fair Value \| Subsidiaries
Debt Instrument [Line Items]
Long-term debt (including current portion)	19,114	$ 19,517
Broken Bow II \| Carrying Amount
Debt Instrument [Line Items]
Long-term debt (including current portion)	62
Broken Bow II \| Fair Value
Debt Instrument [Line Items]
Long-term debt (including current portion)	$ 57

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482900/835-30-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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-Section S99
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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-Subparagraph (SX 210.12-04(a))
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-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-3

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 5: http://www.xbrl.org/2003/role/exampleRef
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Reference 7: http://www.xbrl.org/2003/role/exampleRef
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Reference 8: http://www.xbrl.org/2003/role/exampleRef
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
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-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
-Paragraph 1B
-Subparagraph (c)
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-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 11: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
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-Paragraph 1B
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
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-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (h)
-Publisher FASB
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Reference 15: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Reference 16: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Reference 17: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1D

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Section 50
-Paragraph 1E
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1E

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
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Reference 20: http://www.xbrl.org/2003/role/disclosureRef
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Reference 21: http://www.xbrl.org/2003/role/disclosureRef
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Reference 22: http://www.xbrl.org/2003/role/disclosureRef
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Reference 23: http://www.xbrl.org/2003/role/disclosureRef
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Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1I

+ Details

Material Contingencies - Guarantees (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Guarantor Obligations [Line Items]
Total guarantees, by type and term	$ 124	$ 175
Con Edison Transmission
Guarantor Obligations [Line Items]
Total guarantees, by type and term	76
Guarantees on behalf of the Clean Energy Businesses
Guarantor Obligations [Line Items]
Total guarantees, by type and term	39
Broken Bow II
Guarantor Obligations [Line Items]
Total guarantees, by type and term	9
0 – 3 years
Guarantor Obligations [Line Items]
Total guarantees, by type and term	83
0 – 3 years \| Con Edison Transmission
Guarantor Obligations [Line Items]
Total guarantees, by type and term	76
0 – 3 years \| Guarantees on behalf of the Clean Energy Businesses
Guarantor Obligations [Line Items]
Total guarantees, by type and term	7
0 – 3 years \| Broken Bow II
Guarantor Obligations [Line Items]
Total guarantees, by type and term	0
4 – 10 years
Guarantor Obligations [Line Items]
Total guarantees, by type and term	7
4 – 10 years \| Guarantees on behalf of the Clean Energy Businesses
Guarantor Obligations [Line Items]
Total guarantees, by type and term	7
4 – 10 years \| Broken Bow II
Guarantor Obligations [Line Items]
Total guarantees, by type and term	0
Greater than 10 years
Guarantor Obligations [Line Items]
Total guarantees, by type and term	34
Greater than 10 years \| Con Edison Transmission
Guarantor Obligations [Line Items]
Total guarantees, by type and term	0
Greater than 10 years \| Guarantees on behalf of the Clean Energy Businesses
Guarantor Obligations [Line Items]
Total guarantees, by type and term	25
Greater than 10 years \| Broken Bow II
Guarantor Obligations [Line Items]
Total guarantees, by type and term	$ 9

CONSOLIDATED STATEMENT OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
OPERATING ACTIVITIES
Net income	$ 720	$ 1,430
PRINCIPAL NON-CASH CHARGES/(CREDITS) TO INCOME
Depreciation and amortization	539	499
Deferred income taxes	188	(81)
Rate case amortization and accruals	49	22
Net derivative gains	0	12
Pre-tax gain on sale of the Clean Energy Businesses	30	(855)
Other non-cash items, net	(49)	(86)
CHANGES IN ASSETS AND LIABILITIES
Accounts receivable – customers	(215)	219
Allowance for uncollectible accounts – customers	34	(78)
Materials and supplies, including fuel oil and gas in storage	27	76
Revenue decoupling mechanism receivable	(78)	25
Other receivables and other current assets	98	(13)
Unbilled revenue and net unbilled revenue deferrals	(26)	48
Prepayments	(554)	(564)
Accounts payable	(178)	(543)
Pensions and retiree benefits obligations, net	(86)	(43)
Pensions and retiree benefits contributions	(4)	(5)
Accrued taxes	(13)	252
Accrued interest	128	97
Superfund and environmental remediation costs	(6)	(3)
Distributions from equity investments	0	6
Deferred charges, noncurrent assets, leases, net and other regulatory assets	30	(321)
Deferred credits, noncurrent liabilities and other regulatory liabilities	86	(28)
Other current liabilities	(147)	26
NET CASH FLOWS FROM OPERATING ACTIVITIES	573	92
INVESTING ACTIVITIES
Utility construction expenditures	(1,237)	(1,050)
Cost of removal less salvage	(107)	(94)
Non-utility construction expenditures	0	(140)
Proceeds from sale of the Clean Energy Businesses, net of cash and cash equivalents sold	0	3,927
Other investing activities	0	(25)
NET CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES	(1,344)	2,618
FINANCING ACTIVITIES
Net (payment)/issuance of short-term debt	11	(2,629)
Issuance of long-term debt	0	500
Retirement of long-term debt	0	(60)
Debt issuance costs	(1)	(4)
Common stock dividends	(274)	(284)
Issuance of common shares for stock plans	15	15
Repurchase of common shares	0	(1,000)
Distribution to noncontrolling interest	0	(4)
NET CASH FLOWS USED IN FINANCING ACTIVITIES	(249)	(3,466)
CASH, TEMPORARY CASH INVESTMENTS, AND RESTRICTED CASH:
NET CHANGE FOR THE PERIOD	(1,020)	(756)
BALANCE AT BEGINNING OF PERIOD	1,195	1,530
BALANCE AT END OF PERIOD	175	774
Total cash, temporary cash investments and restricted cash	175	774
LESS: CHANGE IN CASH BALANCES HELD FOR SALE	6	3
BALANCE AT END OF PERIOD EXCLUDING HELD FOR SALE	169	771
Cash paid during the period for:
Interest, net of capitalized interest	135	156
Income taxes	3	10
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION
Construction expenditures in accounts payable	441	444
Issuance of common shares for dividend reinvestment	13	4
Software Licenses
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION
Capital expenditures incurred but unpaid as of end of period	0	2
Equipment
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION
Capital expenditures incurred but unpaid as of end of period	$ 11	$ 17

Assets and Liabilities Held-for-Sale - Additional Information (Details)	Mar. 31, 2024 MWh project	Mar. 01, 2023 project
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Period to obtain consent (in years)	2 years
Disposal Group, Held-for-sale, Not Discontinued Operations \| Clean Energy Businesses
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Tax equity projects \| project	3	2
Electric Energy (MWh)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Notional amount \| MWh	31,374,625
Clean Energy Businesses \| Broken Bow II \| Electric Energy (MWh)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Deferred projects \| project	1	1
Notional amount \| MWh	75

Pension Benefits (Tables)

3 Months Ended

Mar. 31, 2024

Retirement Benefits [Abstract]

Total Periodic Benefit Costs

The components of the Companies’ total periodic benefit credit for the three months ended March 31, 2024 and 2023 were as follows:


	For the Three Months Ended March 31,
	Con Edison		CECONY
(Millions of Dollars)	2024	2023	2024	2023
Service cost – including administrative expenses	$43	$41	$40	$38
Interest cost on projected benefit obligation	159	162	150	153
Expected return on plan assets	(282)	(279)	(269)	(265)
Recognition of net actuarial gain	(4)	(58)	(4)	(55)
Recognition of prior service credit	(4)	(4)	(5)	(5)
TOTAL PERIODIC BENEFIT CREDIT	$(88)	$(138)	$(88)	$(134)
Cost capitalized	(22)	(21)	(22)	(20)
Reconciliation to rate level	18	73	16	68
Total credit recognized	$(92)	$(86)	$(94)	$(86)

The components of the Companies’ total periodic postretirement benefit credit for the three months ended March 31, 2024 and 2023 were as follows:


	For the Three Months Ended March 31,
	Con Edison		CECONY
(Millions of Dollars)	2024	2023	2024	2023
Service cost - including administrative expenses	$3	$4	$3	$3
Interest cost on projected other postretirement benefit obligation	12	14	10	12
Expected return on plan assets	(17)	(18)	(14)	(14)
Recognition of net actuarial gain	(5)	(4)	(3)	(2)
TOTAL PERIODIC OTHER POSTRETIREMENT CREDIT	$(7)	$(4)	$(4)	$(1)
Cost capitalized	(2)	(2)	(1)	(1)
Reconciliation to rate level	4	1	2	—
Total credit recognized	$(5)	$(5)	$(3)	$(2)

Fair Value Measurements - Additional Information (Details) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($)
Clean Energy Businesses
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Gain (loss) on Level 3 energy derivative assets and liabilities	$ (17)

Related Party Transactions (Tables)

3 Months Ended

Mar. 31, 2024

Summary of Costs of Administrative and Other Services Provided and Received

The costs of administrative and other services provided by CECONY to, and received by it from, Con Edison and its other subsidiaries for the three months ended March 31, 2024 and 2023 were as follows:


	For the Three Months Ended March 31,
	CECONY (a)
(Millions of Dollars)	2024	2023
Cost of services provided	$32	$33
Cost of services received	$20	$19

(a) On March 1, 2023, Con Edison completed the sale of all of the stock of the Clean Energy Businesses. See Note Q and Note R.

General	3 Months Ended
General	Mar. 31, 2024
Accounting Policies [Abstract]
General	General These combined notes accompany and form an integral part of the separate interim consolidated financial statements of each of the two separate registrants: Consolidated Edison, Inc. and its subsidiaries (Con Edison) and Consolidated Edison Company of New York, Inc. and its subsidiaries (CECONY). CECONY is a subsidiary of Con Edison and as such its financial condition and results of operations and cash flows, that are presented separately in the CECONY consolidated financial statements, are also consolidated, along with those of Orange and Rockland Utilities, Inc. (O&R), Con Edison Transmission, Inc. (together with its subsidiaries, Con Edison Transmission) and its former subsidiary, Con Edison Clean Energy Businesses, Inc. (together with its subsidiaries, the Clean Energy Businesses), in Con Edison’s consolidated financial statements. On March 1, 2023, Con Edison completed the sale of all of the stock of the Clean Energy Businesses. See Note Q and Note R. The term “Utilities” is used in these notes to refer to CECONY and O&R. As used in these notes, the term “Companies” refers to Con Edison and CECONY and, except as otherwise noted, the information in these combined notes relates to each of the Companies. However, CECONY makes no representation as to information relating to Con Edison or the subsidiaries of Con Edison other than itself. The separate interim consolidated financial statements of each of the Companies are unaudited but, in the opinion of their respective managements, reflect all adjustments (which include only normally recurring adjustments) necessary for a fair statement of the results for the interim periods presented. The Companies’ separate interim consolidated financial statements should be read together with their separate audited financial statements (including the combined notes thereto) included in Item 8 of their combined Annual Report on Form 10-K for the year ended December 31, 2023. Con Edison has two regulated utility subsidiaries: CECONY and O&R. CECONY provides electric service and gas service in New York City and Westchester County. The company also provides steam service in parts of Manhattan. O&R, along with its regulated utility subsidiary, provides electric service in southeastern New York and northern New Jersey, and gas service in southeastern New York. Con Edison Transmission invests in and seeks to develop electric transmission projects through its subsidiary, Consolidated Edison Transmission, LLC, and manages, through joint ventures, investments in gas pipeline and storage facilities through its subsidiary, Con Edison Gas Pipeline and Storage, LLC. See “Investments” in Note A.

Summary of Significant Accounting Policies and Other Matters (Policies)	3 Months Ended
	Mar. 31, 2024
Accounting Policies [Abstract]
Reclassification	Reclassification Certain prior period amounts have been reclassified to conform with the current period presentation.
Earnings Per Common Share	Earnings Per Common Share Con Edison presents basic and diluted earnings per share (EPS) on the face of its consolidated income statement. Basic EPS is calculated by dividing earnings available to common shareholders (“Net income for common stock” on Con Edison’s consolidated income statement) by the weighted average number of Con Edison common shares outstanding during the period. In the calculation of diluted EPS, weighted average shares outstanding are increased for additional shares that would be outstanding if potentially dilutive securities were converted to common stock. Potentially dilutive securities for Con Edison consist of restricted stock units and deferred stock units for which the average market price of the common shares for the period was greater than the exercise vesting price.
Fair Value Measurements	Fair Value Measurements The accounting rules for fair value measurements and disclosures define fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date in a principal or most advantageous market. Fair value is a market-based measurement that is determined based on inputs, that refer broadly to assumptions that market participants use in pricing assets or liabilities. These inputs can be readily observable, market corroborated, or generally unobservable firm inputs. The Companies often make certain assumptions that market participants would use in pricing the asset or liability, including assumptions about risk, and the risks inherent in the inputs to valuation techniques. The Companies use valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs. The accounting rules for fair value measurements and disclosures established a fair value hierarchy, that prioritizes the inputs to valuation techniques used to measure fair value in three broad levels. The rules require that assets and liabilities be classified in their entirety based on the level of input that is significant to the fair value measurement. Assessing the significance of a particular input may require judgment considering factors specific to the asset or liability and may affect the valuation of the asset or liability and their placement within the fair value hierarchy. The Companies classify fair value balances based on the fair value hierarchy defined by the accounting rules for fair value measurements and disclosures as follows: •Level 1 – Consists of assets or liabilities whose value is based on unadjusted quoted prices in active markets at the measurement date. An active market is one in which transactions for assets or liabilities occur with sufficient frequency and volume to provide pricing information on an ongoing basis. This category includes contracts traded on active exchange markets valued using unadjusted prices quoted directly from the exchange. •Level 2 – Consists of assets or liabilities valued using industry standard models and based on prices, other than quoted prices within Level 1, that are either directly or indirectly observable as of the measurement date. The industry standard models consider observable assumptions including time value, volatility factors and current market and contractual prices for the underlying commodities, in addition to other economic measures. This category includes contracts traded on active exchanges or in over-the-counter markets priced with industry standard models. •Level 3 – Consists of assets or liabilities whose fair value is estimated based on internally developed models or methodologies using inputs that are generally less readily observable and supported by little, if any, market activity at the measurement date. Unobservable inputs are developed based on the best available information and subject to cost benefit constraints. This category includes contracts priced using models that are internally developed and contracts placed in illiquid markets. It also includes contracts that expire after the period of time for which quoted prices are available and internal models are used to determine a significant portion of the value.
New Financial Accounting Standards	New Financial Accounting Standards In March 2024, the SEC issued a final rule, The Enhancement and Standardization of Climate-Related Disclosures for Investors, that requires registrants to provide climate-related disclosures in annual reports. The rule was subjected to litigation upon its release, and multiple challenges to the rule are currently pending with the United States Court of Appeals for the Eight Circuit. As a result, the SEC has temporarily stayed its rule pending judicial review. The results of the legal challenges and potential SEC actions may materially alter the terms of the rule as described below. Beginning with the 2025 annual report, the Companies would be required to provide additional disclosures in the Management Discussion and Analysis (MD&A) section of the SEC Form 10-K, and in the footnotes to the financial statements. The MD&A disclosures would describe material climate-related risks and their impacts, as well as board oversight of such risks. The footnote disclosures would quantify the impacts of severe weather events and other natural conditions, if material, and provide additional qualitative disclosures. Finally, the rule creates a new section of annual reports related to Scope 1 and Scope 2 greenhouse gas emission disclosures, beginning with the 2026 annual report. If any of the greenhouse gases specified in the rule is individually material, that would need to be separately disclosed. Qualitative disclosures related to the methodology, significant inputs and assumptions used to calculate GHG emissions are also required. The greenhouse gas emission disclosures would be subject to limited and then reasonable assurance for years beginning in 2029 and 2033, respectively. The Companies are evaluating the requirements of the final rule, and closely monitoring legal developments. The Companies do not expect the final rule to have a material impact on results of operations, financial position, or liquidity. However, there are substantial disclosure requirements and the Companies have cross-functional working groups assessing the implications and implementing best practices.

CONSOLIDATED STATEMENT OF EQUITY (UNAUDITED) - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Treasury Stock	Capital Stock Expense	Accumulated Other Comprehensive Income/(Loss)	Non- controlling Interest
Beginning balance (shares) at Dec. 31, 2022		355
Beginning balance at Dec. 31, 2022	$ 20,889	$ 37	$ 9,803	$ 11,985	$ (1,038)	$ (122)	$ 22	$ 202
Beginning balance (shares) at Dec. 31, 2022					23
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,430			1,433				(3)
Common stock dividends	(288)			(288)
Issuance of common shares for stock plans	15		15
Common stock repurchases (in shares)		9			9
Common stock repurchases	(1,008)		(200)		$ (808)
Other comprehensive income (loss)	4						4
Distributions to noncontrolling interest	(4)							(4)
Disposal of the Clean Energy Businesses	(195)							(195)
Ending balance (shares) at Mar. 31, 2023		346
Ending balance at Mar. 31, 2023	20,843	$ 37	9,618	13,130	$ (1,846)	(122)	26	0
Ending balance (shares) at Mar. 31, 2023					32
Beginning balance (shares) at Dec. 31, 2023		345
Beginning balance at Dec. 31, 2023	21,158	$ 37	9,861	13,377	$ (2,017)	(122)	22	0
Beginning balance (shares) at Dec. 31, 2023					34
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	720			720
Common stock dividends	(287)			(287)
Issuance of common shares for stock plans (in shares)		1
Issuance of common shares for stock plans	28		27
Other comprehensive income (loss)	(4)						(4)
Ending balance (shares) at Mar. 31, 2024		346
Ending balance at Mar. 31, 2024	$ 21,615	$ 38	$ 9,888	$ 13,810	$ (2,017)	$ (122)	$ 18	$ 0
Ending balance (shares) at Mar. 31, 2024					34

Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2024

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following table presents, for the three months ended March 31, 2024 and 2023, revenue from contracts with customers as defined in Accounting Standards Codification Topic 606, "Revenue from Contracts with Customers," as well as additional revenue from sources other than contracts with customers, disaggregated by major source.


	For the Three Months Ended March 31, 2024			For the Three Months Ended March 31, 2023
(Millions of Dollars)	Revenues from contracts with customers	Other revenues (a)	Total operating revenues	Revenues from contracts with customers	Other revenues (a)	Total operating revenues
CECONY
Electric	$2,439	$2	$2,441	$2,263	$93	$2,356
Gas	1,229	14	1,243	1,257	34	1,291
Steam	294	(7)	287	303	3	306
Total CECONY	$3,962	$9	$3,971	$3,823	$130	$3,953
O&R
Electric	200	(5)	195	178	4	182
Gas	116	(3)	113	138	1	139
Total O&R	$316	$(8)	$308	$316	$5	$321
Clean Energy Businesses (c)
Renewables	—	—	—	68	—	68
Energy services	—	—	—	7	—	7
Develop/Transfer Projects	—	—	—	7	—	7
Other	—	—	—	—	47	47
Total Clean Energy Businesses	$—	$—	$—	$82	$47	$129
Con Edison Transmission	1	—	1	1	—	1
Other (b)	—	—	—	—	(1)	(1)
Total Con Edison	$4,279	$1	$4,280	$4,222	$181	$4,403

(a) For the Utilities, this includes primarily revenue or negative revenue adjustments from alternative revenue programs, such as the revenue decoupling mechanisms under their New York electric and gas rate plans. For the Clean Energy Businesses, this included revenue from wholesale services. On March 1, 2023, Con Edison completed the sale of all of the stock of the Clean Energy Businesses. See Note Q and Note R.

(b) Other includes the parent company, Con Edison's tax equity investments, the deferred project held for sale and consolidated adjustments. See Note R.

(c) On March 1, 2023, Con Edison completed the sale of all of the stock of the Clean Energy Businesses. See Note Q and Note R.

Change in Unbilled Contract and Unearned Revenues


	2024		2023
(Millions of Dollars)	Unbilled contract revenue (a)	Unearned revenue (b)	Unbilled contract revenue (a)		Unearned revenue (b)
Beginning balance as of January 1,	$4	$—	$80		$3
Additions (c)	—	—	2		—
Subtractions (c)	—	—	33		3	(d)
Ending balance as of March 31,	$4	$—	$49	(e)	$—

(a)Unbilled contract revenue represents accumulated incurred costs and earned profits on contracts (revenue arrangements), which have been recorded as revenue, but have not yet been billed to customers, and which represent contract assets as defined in Topic 606. Substantially all accrued unbilled contract revenue is expected to be collected within one year. Unbilled contract revenue arises from the cost-to-cost method of revenue recognition. Unbilled contract revenue from fixed-price type contracts is converted to billed receivables when amounts are invoiced to customers according to contractual billing terms, which generally occur when deliveries or other performance milestones are completed.

(b)Unearned revenue represents a liability for billings to customers in excess of earned revenue, which are contract liabilities as defined in Topic 606.

(c)Additions for unbilled contract revenue and subtractions for unearned revenue represent additional revenue earned. Additions for unearned revenue and subtractions for unbilled contract revenue represent billings. Activity also includes appropriate balance sheet classification for the period. Of the subtractions in 2023, $21 million and $1 million relate to the sale of the Clean Energy Businesses for unbilled contract revenue and unearned revenue, respectively. See (e) below.

(d)Of the subtractions from unearned revenue, $3 million was included in the balances as of January 1, 2023.

(e)Following the sale of the Clean Energy Businesses, Con Edison received substantially all contract revenue, net of certain costs incurred, for a battery storage project located in Imperial County, California. See Note Q.

Environmental Matters

3 Months Ended

Mar. 31, 2024

Environmental Remediation Obligations [Abstract]

Environmental Matters

Superfund Sites

Hazardous substances, such as asbestos, polychlorinated biphenyls (PCBs) and coal tar, have been used or generated in the course of operations of the Utilities and their predecessors and are present at sites and in facilities and equipment they currently or previously owned, including sites at which gas was manufactured or stored.

The Federal Comprehensive Environmental Response, Compensation and Liability Act of 1980 and similar state statutes (Superfund) impose joint and several liability, regardless of fault, upon generators of hazardous substances for investigation and remediation costs (which include costs of demolition, removal, disposal, storage, replacement, containment and monitoring) and natural resource damages. Liability under these laws can be material and may be imposed for contamination from past acts, even though such past acts may have been lawful at the time they occurred. The sites at which the Utilities have been asserted to have liability under these laws, including their manufactured gas plant sites and any neighboring areas to which contamination may have migrated, are referred to herein as “Superfund Sites.”

For Superfund Sites where there are other potentially responsible parties and the Utilities are not managing the site investigation and remediation, the accrued liability represents an estimate of the amount the Utilities will need to pay to investigate and, where determinable, discharge their related obligations. For Superfund Sites (including the manufactured gas plant sites) for which one of the Utilities is managing the investigation and remediation, the accrued liability represents an estimate of the company's share of the undiscounted cost to investigate the sites and, for sites that have been investigated in whole or in part, the cost to remediate the sites, if remediation is

necessary and if a reasonable estimate of such cost can be made. Remediation costs are estimated in light of the information available, applicable remediation standards and experience with similar sites.

The accrued liabilities and regulatory assets related to Superfund Sites at March 31, 2024 and December 31, 2023 were as follows:


	Con Edison		CECONY
(Millions of Dollars)	2024	2023	2024	2023
Accrued Liabilities:
Manufactured gas plant sites	$1,013	$1,016	$922	$924
Other Superfund Sites	99	102	98	102
Total	$1,112	$1,118	$1,020	$1,026
Regulatory assets	$1,098	$1,105	$1,015	$1,022

Most of the accrued Superfund Site liability relates to sites that have been investigated, in whole or in part. However, for some of the sites, the extent and associated cost of the required remediation has not yet been determined. As investigations progress and information pertaining to the required remediation becomes available, the Utilities expect that additional liability may be accrued, the amount of which is not presently determinable but may be material. The Utilities are permitted to recover or defer as regulatory assets (for subsequent recovery through rates) prudently incurred site investigation and remediation costs.

Environmental remediation costs incurred related to Superfund Sites for the three months ended March 31, 2024 and 2023 were as follows:


	For the Three Months Ended March 31,
	Con Edison		CECONY
(Millions of Dollars)	2024	2023	2024	2023
Remediation costs incurred	$7	$3	$6	$3

Insurance and other third-party recoveries received by Con Edison or CECONY were immaterial for the three months ended March 31, 2024 and 2023.

Con Edison and CECONY estimated that for their manufactured gas plant sites (including CECONY’s Astoria site), the aggregate undiscounted potential liability for the investigation and remediation of coal tar and/or other environmental contaminants could range up to $3,440 million and $3,295 million, respectively. These estimates were based on the assumption that there is contamination at all sites, including those that have not yet been fully investigated and additional assumptions about the extent of the contamination and the type and extent of the remediation that may be required. Actual experience may be materially different.

Asbestos Proceedings

Suits have been brought in New York State and federal courts against the Utilities and many other defendants, wherein a large number of plaintiffs sought large amounts of compensatory and punitive damages for deaths and injuries allegedly caused by exposure to asbestos at various premises of the Utilities. The suits that have been resolved, that are many, have been resolved without any payment by the Utilities, or for amounts that were not, in the aggregate, material to them. The amounts specified in all the remaining thousands of suits total billions of dollars; however, the Utilities believe that these amounts are greatly exaggerated, based on the disposition of previous claims. At March 31, 2024, Con Edison and CECONY have accrued their estimated aggregate undiscounted potential liabilities for these suits and additional suits that may be brought through 2035 as shown in the following table. These estimates were based upon a combination of modeling, historical data analysis and risk factor assessment. Courts have applied, and may continue to apply, different standards for determining liability in asbestos suits than the standard that applied historically. As a result, the Companies currently believe that there is a reasonable possibility of an exposure to loss in excess of the liability accrued for the suits. The Companies are unable to estimate the amount or range of such loss. In addition, certain current and former employees have claimed or are claiming workers’ compensation benefits based on alleged disability from exposure to asbestos. CECONY is permitted to defer as regulatory assets (for subsequent recovery through rates) costs incurred for its asbestos lawsuits and workers’ compensation claims.

The accrued liability for asbestos suits and workers’ compensation proceedings (including those related to asbestos exposure) and the amounts deferred as regulatory assets or liabilities for the Companies at March 31, 2024 and December 31, 2023 were as follows:


	Con Edison		CECONY
(Millions of Dollars)	2024	2023	2024	2023
Accrued liability – asbestos suits	$8	$8	$7	$7
Regulatory assets – asbestos suits	$8	$8	$7	$7
Accrued liability – workers’ compensation	$57	$56	$55	$54
Regulatory liabilities – workers’ compensation	$15	$17	$15	$17

- Definition

The entire disclosure for environmental loss contingencies, such as presence of hazardous waste, relevant information from reports issued by regulators, and estimated costs to achieve compliance with regulatory requirements. This element may be used for all of an entity's disclosures about environmental loss contingencies.

+ References

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Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
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Reference 4: http://www.xbrl.org/2003/role/exampleRef
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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Reference 6: http://www.xbrl.org/2003/role/recommendedDisclosureRef
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Reference 7: http://www.xbrl.org/2003/role/recommendedDisclosureRef
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+ Details

Fair Value Measurements

3 Months Ended

Mar. 31, 2024

Fair Value Disclosures [Abstract]

Fair Value Measurements

The accounting rules for fair value measurements and disclosures define fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date in a principal or most advantageous market. Fair value is a market-based measurement that is determined based on inputs, that refer broadly to assumptions that market participants use in pricing assets or liabilities. These inputs can be readily observable, market corroborated, or generally unobservable firm inputs. The Companies often make certain assumptions that market participants would use in pricing the asset or liability, including assumptions about risk, and the risks inherent in the inputs to valuation techniques. The Companies use valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs.

The accounting rules for fair value measurements and disclosures established a fair value hierarchy, that prioritizes the inputs to valuation techniques used to measure fair value in three broad levels. The rules require that assets and liabilities be classified in their entirety based on the level of input that is significant to the fair value measurement. Assessing the significance of a particular input may require judgment considering factors specific to the asset or liability and may affect the valuation of the asset or liability and their placement within the fair value hierarchy. The Companies classify fair value balances based on the fair value hierarchy defined by the accounting rules for fair value measurements and disclosures as follows:

•Level 1 – Consists of assets or liabilities whose value is based on unadjusted quoted prices in active markets at the measurement date. An active market is one in which transactions for assets or liabilities occur with sufficient frequency and volume to provide pricing information on an ongoing basis. This category includes contracts traded on active exchange markets valued using unadjusted prices quoted directly from the exchange.

•Level 2 – Consists of assets or liabilities valued using industry standard models and based on prices, other than quoted prices within Level 1, that are either directly or indirectly observable as of the measurement date. The industry standard models consider observable assumptions including time value, volatility factors and current market and contractual prices for the underlying commodities, in addition to other economic measures. This category includes contracts traded on active exchanges or in over-the-counter markets priced with industry standard models.

•Level 3 – Consists of assets or liabilities whose fair value is estimated based on internally developed models or methodologies using inputs that are generally less readily observable and supported by little, if any, market activity at the measurement date. Unobservable inputs are developed based on the best available information and subject to cost benefit constraints. This category includes contracts priced using models that are internally developed and contracts placed in illiquid markets. It also includes contracts that

expire after the period of time for which quoted prices are available and internal models are used to determine a significant portion of the value.

For information on the measurement of Con Edison's investment in MVP, which was measured at fair value on a non-recurring basis, see Note A. Assets and liabilities measured at fair value on a recurring basis as of March 31, 2024 and December 31, 2023 are summarized below.


	2024					2023
(Millions of Dollars)	Level 1	Level 2	Level 3	Netting Adjustment (d)	Total	Level 1	Level 2	Level 3	Netting Adjustment (d)	Total
Con Edison
Derivative assets:
Commodity (a)(b)(c)	$4	$156	$2	$(27)	$135	$6	$146	$2	$(54)	$100


Mutual Funds (a)(b)	523	—	—	—	523	505	—	—	—	505
Cash Value of Life Insurance Policies (a)(b)	—	125	—	—	125	—	118	—	—	118
Total assets	$527	$281	$2	$(27)	$783	$511	$264	$2	$(54)	$723
Derivative liabilities:
Commodity (a)(b)(c)	$20	$229	$2	$(44)	207	$22	$347	$10	$(65)	$314


CECONY
Derivative assets:
Commodity (a)(b)(c)	$4	$151	$1	$(28)	$128	$6	$143	$1	$(52)	$98
Mutual Funds (a)(b)	505	—	—	—	505	488	—	—	—	488
Cash Value of Life Insurance Policies (a)(b)	—	120	—	—	120	—	113	—	—	113
Total assets	$509	$271	$1	$(28)	$753	$494	$256	$1	$(52)	$699
Derivative liabilities:
Commodity (a)(b)(c)	$18	$216	$1	$(47)	188	$20	$326	$6	$(65)	$287

(a)The Companies’ policy is to review the fair value hierarchy and recognize transfers into and transfers out of the levels at the end of each reporting period. Con Edison and CECONY had $4 million of commodity derivative liabilities transferred from level 3 to level 2 during the three months ended March 31, 2024 because of availability of observable market data due to the decrease in the terms of certain contracts from beyond three years as of December 31, 2023 to less than three years as of March 31, 2024. Con Edison and CECONY had an immaterial amount of derivative assets and $9 million and $6 million of commodity derivative liabilities, respectively, transferred from level 3 to level 2 during the year ended December 31, 2023 because of availability of observable market data due to the decrease in the terms of certain contracts from beyond three years as of September 30, 2023 to less than three years as of December 31, 2023.

(b)Level 2 assets and liabilities include investments held in the deferred compensation plan and/or non-qualified retirement plans, exchange-traded contracts where there is insufficient market liquidity to warrant inclusion in Level 1, and certain over-the-counter derivative instruments for electricity, refined products and natural gas. Derivative instruments classified as Level 2 are valued using industry standard models that incorporate corroborated observable inputs, such as pricing services or prices from similar instruments that trade in liquid markets, time value and volatility factors.

(c)The accounting rules for fair value measurements and disclosures require consideration of the impact of nonperformance risk (including credit risk) from a market participant perspective in the measurement of the fair value of assets and liabilities. At March 31, 2024 and December 31, 2023, the Companies determined that nonperformance risk would have no material impact on their financial position or results of operations.

(d)Amounts represent the impact of legally-enforceable master netting agreements that allow the Companies to net gain and loss positions and cash collateral held or placed with the same counterparties.

The employees in the Companies’ risk management group develop and maintain the Companies’ valuation policies and procedures for, and verify pricing and fair value valuation of, commodity derivatives. Under the Companies’ policies and procedures, multiple independent sources of information are obtained for forward price curves used to value commodity derivatives. Fair value and changes in fair value of commodity derivatives are reported monthly to the Companies’ risk committees, comprised of officers and employees of the Companies that oversee energy hedging at the Utilities. The risk management group reports to the Companies’ Vice President and Treasurer.

Fair Value of Level 3 at March 31, 2024

Valuation
Techniques

Unobservable Inputs

Range

(Millions of Dollars)

Con Edison – Commodity

Electricity

immaterial

Discounted Cash Flow

Forward energy prices (a)

$37.65-$88.95 per MWh

Electricity

$(1)

Discounted Cash Flow

Forward capacity prices (a)

$1.92-$7.53 per kW-month

Transmission Congestion Contracts

Discounted Cash Flow

Inter-zonal forward price curves adjusted for historical zonal losses (b)

$(0.10)-$2.68 per MWh

Total Con Edison—Commodity

$—

CECONY – Commodity

Electricity

(1)

Discounted Cash Flow

Forward capacity prices (a)

$1.92-$7.53 per kW-month

Transmission Congestion Contracts

Discounted Cash Flow

Inter-zonal forward price curves adjusted for historical zonal losses (b)

$(0.10)-$2.68 per MWh

Total CECONY—Commodity

$—

(a)Generally, increases/(decreases) in this input in isolation would result in a higher/(lower) fair value measurement.

(b)Generally, increases/(decreases) in this input in isolation would result in a lower/(higher) fair value measurement.

The table listed below provides a reconciliation of the beginning and ending net balances for assets and liabilities measured at fair value as of March 31, 2024 and 2023 and classified as Level 3 in the fair value hierarchy:


	For the Three Months Ended March 31,
	Con Edison		CECONY
(Millions of Dollars)	2024	2023	2024	2023
Beginning balance as of January 1,	$(8)	$15	$(5)	$(6)
Included in earnings	(2)	(2)	(1)	(1)
Included in regulatory assets and liabilities	1	8	—	7

Settlements	5	4	2	2
Decrease due to the sale of the Clean Energy Businesses (a)	—	(29)	—	—

Transfer out of level 3	4	(7)	4	(7)
Ending balance as of March 31,	$—	$(11)	$—	$(5)

(a) On March 1, 2023, Con Edison completed the sale of all of the stock of the Clean Energy Businesses. See Note Q and Note R.

For the Utilities, realized gains and losses on Level 3 commodity derivative assets and liabilities are reported as part of purchased power, gas and fuel costs. The Utilities generally recover these costs in accordance with rate provisions approved by the applicable state public utilities regulators. See Note A. Unrealized gains and losses for commodity derivatives are generally deferred on the consolidated balance sheet in accordance with the accounting rules for regulated operations.

For the Clean Energy Businesses, realized and unrealized gains and losses on Level 3 commodity derivative assets and liabilities were reported in non-utility revenues ($17 million loss) on the consolidated income statement for the three months ended March 31, 2023. On March 1, 2023, Con Edison completed the sale of all of the stock of the Clean Energy Businesses and amounts for 2023 are shown through the date of sale. See Note Q and Note R.

Other Postretirement Benefits - Periodic Postretirement Benefit Costs (Details) - Other Postretirement Benefits - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Service cost - including administrative expenses	$ 3	$ 4
Interest cost on projected other postretirement benefit obligation	12	14
Expected return on plan assets	(17)	(18)
Recognition of net actuarial gain	(5)	(4)
TOTAL PERIODIC OTHER POSTRETIREMENT CREDIT	(7)	(4)
Cost capitalized	(2)	(2)
Reconciliation to rate level	4	1
Total credit recognized	(5)	(5)
CECONY \| Subsidiaries
Defined Benefit Plan Disclosure [Line Items]
Service cost - including administrative expenses	3	3
Interest cost on projected other postretirement benefit obligation	10	12
Expected return on plan assets	(14)	(14)
Recognition of net actuarial gain	(3)	(2)
TOTAL PERIODIC OTHER POSTRETIREMENT CREDIT	(4)	(1)
Cost capitalized	(1)	(1)
Reconciliation to rate level	2	0
Total credit recognized	$ (3)	$ (2)

Current Expected Credit Losses - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase (decrease) in allowance for uncollectible accounts resulting from COVID-19 pandemic	$ 34	$ (78)
Subsidiaries \| CECONY
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase (decrease) in allowance for uncollectible accounts resulting from COVID-19 pandemic	$ 30	$ (78)

Pension Benefits

3 Months Ended

Mar. 31, 2024

Retirement Benefits [Abstract]

Pension Benefits

Total Periodic Benefit Credit

The components of the Companies’ total periodic benefit credit for the three months ended March 31, 2024 and 2023 were as follows:


	For the Three Months Ended March 31,
	Con Edison		CECONY
(Millions of Dollars)	2024	2023	2024	2023
Service cost – including administrative expenses	$43	$41	$40	$38
Interest cost on projected benefit obligation	159	162	150	153
Expected return on plan assets	(282)	(279)	(269)	(265)
Recognition of net actuarial gain	(4)	(58)	(4)	(55)
Recognition of prior service credit	(4)	(4)	(5)	(5)
TOTAL PERIODIC BENEFIT CREDIT	$(88)	$(138)	$(88)	$(134)
Cost capitalized	(22)	(21)	(22)	(20)
Reconciliation to rate level	18	73	16	68
Total credit recognized	$(92)	$(86)	$(94)	$(86)

Components of net periodic benefit credit other than service cost are presented outside of operating income on the Companies' consolidated income statements, and only the service cost component is eligible for capitalization. Accordingly, the service cost component is included in the line "Other operations and maintenance" and the non-

service cost components are included in the lines "Other income" and "Other deductions" in the Companies' consolidated income statements.

Expected Contributions

Based on estimates as of March 31, 2024, the Companies expect to make contributions to the pension plans during 2024 of $25 million (of which $22 million is to be made by CECONY). The Companies’ policy is to fund the total periodic benefit cost of the qualified plan to the extent tax deductible and to also contribute to the non-qualified supplemental plans. During the first three months of 2024, the Companies contributed $5 million to the pension plans, $4 million of which was contributed by CECONY.

- Definition

The entire disclosure for retirement benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 70
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480794/715-70-50-1

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480482/715-20-55-17

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(iv)(03)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (q)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (l)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//715/tableOfContent

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(iii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (o)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (p)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (r)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (r)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480126/715-20-S99-2

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 60
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480266/715-60-50-3

+ Details

CONSOLIDATED INCOME STATEMENT - CECONY (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
OPERATING REVENUES
TOTAL OPERATING REVENUES	$ 4,280	$ 4,403
OPERATING EXPENSES
Depreciation and amortization	539	499
Taxes, other than income taxes	808	765
TOTAL OPERATING EXPENSES	3,239	3,519
Operating income/(loss)	1,011	1,739
OTHER INCOME (DEDUCTIONS)
Investment and other income	19	8
Allowance for equity funds used during construction	10	6
Other deductions	(11)	(22)
TOTAL OTHER INCOME	182	196
INCOME BEFORE INTEREST AND INCOME TAX EXPENSE	1,193	1,935
INTEREST EXPENSE (INCOME)
Interest on long-term debt	255	251
Other interest expense	48	24
Allowance for borrowed funds used during construction	(14)	(13)
NET INTEREST EXPENSE	289	262
INCOME BEFORE INCOME TAX EXPENSE	904	1,673
INCOME TAX EXPENSE	184	243
NET INCOME	720	1,433
Electric
OPERATING REVENUES
TOTAL OPERATING REVENUES	2,636	2,538
Gas
OPERATING REVENUES
TOTAL OPERATING REVENUES	1,356	1,430
OPERATING EXPENSES
Operating costs	267	468
Steam
OPERATING REVENUES
TOTAL OPERATING REVENUES	287	306
Purchased power
OPERATING EXPENSES
Operating costs	649	702
Fuel
OPERATING EXPENSES
Operating costs	88	189
Other operations and maintenance
OPERATING EXPENSES
Operating costs	888	896
Non-utility
OPERATING REVENUES
TOTAL OPERATING REVENUES	1	129
CECONY
OPERATING REVENUES
TOTAL OPERATING REVENUES	3,971	3,953
OPERATING EXPENSES
Depreciation and amortization	510	473
Taxes, other than income taxes	781	736
TOTAL OPERATING EXPENSES	2,982	3,144
Operating income/(loss)	989	809
OTHER INCOME (DEDUCTIONS)
Investment and other income	156	187
Allowance for equity funds used during construction	9	5
Other deductions	(9)	(10)
TOTAL OTHER INCOME	156	182
INCOME BEFORE INTEREST AND INCOME TAX EXPENSE	1,145	991
INTEREST EXPENSE (INCOME)
Interest on long-term debt	242	216
Other interest expense	41	29
Allowance for borrowed funds used during construction	(13)	(12)
NET INTEREST EXPENSE	270	233
INCOME BEFORE INCOME TAX EXPENSE	875	758
INCOME TAX EXPENSE	181
NET INCOME	694	604
CECONY \| Electric
OPERATING REVENUES
TOTAL OPERATING REVENUES	2,441	2,356
CECONY \| Gas
OPERATING REVENUES
TOTAL OPERATING REVENUES	1,243	1,291
OPERATING EXPENSES
Operating costs	235	365
CECONY \| Steam
OPERATING REVENUES
TOTAL OPERATING REVENUES	287	306
CECONY \| Purchased power
OPERATING EXPENSES
Operating costs	579	631
CECONY \| Fuel
OPERATING EXPENSES
Operating costs	88	189
CECONY \| Other operations and maintenance
OPERATING EXPENSES
Operating costs	$ 789	$ 750

Current Expected Credit Losses - Rollforward of Segment Type (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Reserve adjustments	$ 34	$ (78)
Accounts receivable - customers
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	360	322
Recoveries	14	4
Write-offs	(66)	(48)
Reserve adjustments	86	(34)
Ending Balance	394	244
Other receivables
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	13	10
Recoveries	0	0
Write-offs	0	(1)
Reserve adjustments	4	1
Ending Balance	17	10
CECONY
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Reserve adjustments	30	(78)
CECONY \| Accounts receivable - customers \| Subsidiaries
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	353	314
Recoveries	11	4
Write-offs	(62)	(47)
Reserve adjustments	81	(35)
Ending Balance	383	236
CECONY \| Other receivables \| Subsidiaries
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	9	7
Recoveries	0	0
Write-offs	0	0
Reserve adjustments	3	1
Ending Balance	$ 12	$ 8

Derivative Instruments and Hedging Activities - Fair Values of Commodity Derivatives Including Offsetting (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Fair value of derivative assets
Net Amounts of Assets/ (Liabilities)	$ 783	$ 723
Net fair value derivative assets/(liabilities)
Gross Amounts of Recognized Assets/(Liabilities)	(89)	(224)
Gross Amounts Offset	18	18
Net Amounts of Assets/ (Liabilities)	(71)	(206)
CECONY \| Subsidiaries
Fair value of derivative assets
Net Amounts of Assets/ (Liabilities)	753	699
Net fair value derivative assets/(liabilities)
Gross Amounts of Recognized Assets/(Liabilities)	(78)	(202)
Gross Amounts Offset	15	17
Net Amounts of Assets/ (Liabilities)	(63)	(185)
Current
Fair value of derivative liabilities
Gross Amounts of Recognized Assets/(Liabilities)	(164)	(230)
Gross Amounts Offset	58	52
Net Amounts of Assets/ (Liabilities)	(106)	(178)
Current \| CECONY \| Subsidiaries
Fair value of derivative liabilities
Gross Amounts of Recognized Assets/(Liabilities)	(156)	(217)
Gross Amounts Offset	55	48
Net Amounts of Assets/ (Liabilities)	(101)	(169)
Noncurrent
Fair value of derivative liabilities
Gross Amounts of Recognized Assets/(Liabilities)	(123)	(154)
Gross Amounts Offset	29	33
Net Amounts of Assets/ (Liabilities)	(94)	(121)
Noncurrent \| CECONY \| Subsidiaries
Fair value of derivative liabilities
Gross Amounts of Recognized Assets/(Liabilities)	(112)	(139)
Gross Amounts Offset	27	31
Net Amounts of Assets/ (Liabilities)	(85)	(108)
Total fair value of derivative liabilities
Fair value of derivative liabilities
Gross Amounts of Recognized Assets/(Liabilities)	(287)	(384)
Gross Amounts Offset	87	85
Net Amounts of Assets/ (Liabilities)	(200)	(299)
Net fair value derivative assets/(liabilities)
Margin deposit liability	(7)	(15)
Total fair value of derivative liabilities \| CECONY
Net fair value derivative assets/(liabilities)
Margin deposit liability		(10)
Total fair value of derivative liabilities \| CECONY \| Subsidiaries
Fair value of derivative liabilities
Gross Amounts of Recognized Assets/(Liabilities)	(268)	(356)
Gross Amounts Offset	82	79
Net Amounts of Assets/ (Liabilities)	(186)	(277)
Net fair value derivative assets/(liabilities)
Margin deposit liability	(2)
Current
Fair value of derivative assets
Gross Amounts of Recognized Assets/(Liabilities)	127	83
Gross Amounts Offset	(46)	(38)
Net Amounts of Assets/ (Liabilities)	81	45
Current \| CECONY \| Subsidiaries
Fair value of derivative assets
Gross Amounts of Recognized Assets/(Liabilities)	121	78
Gross Amounts Offset	(45)	(35)
Net Amounts of Assets/ (Liabilities)	76	43
Noncurrent
Fair value of derivative assets
Gross Amounts of Recognized Assets/(Liabilities)	71	77
Gross Amounts Offset	(23)	(29)
Net Amounts of Assets/ (Liabilities)	48	48
Noncurrent \| CECONY \| Subsidiaries
Fair value of derivative assets
Gross Amounts of Recognized Assets/(Liabilities)	69	76
Gross Amounts Offset	(22)	(27)
Net Amounts of Assets/ (Liabilities)	47	49
Total fair value of derivative assets
Fair value of derivative assets
Gross Amounts of Recognized Assets/(Liabilities)	198	160
Gross Amounts Offset	(69)	(67)
Net Amounts of Assets/ (Liabilities)	129	93
Net fair value derivative assets/(liabilities)
Margin deposits assets	7	7
Total fair value of derivative assets \| CECONY
Net fair value derivative assets/(liabilities)
Margin deposits assets		6
Total fair value of derivative assets \| CECONY \| Subsidiaries
Fair value of derivative assets
Gross Amounts of Recognized Assets/(Liabilities)	190	154
Gross Amounts Offset	(67)	(62)
Net Amounts of Assets/ (Liabilities)	123	$ 92
Net fair value derivative assets/(liabilities)
Margin deposits assets	$ 6

Fair Value Measurements - Reconciliation of Assets and Liabilities Measured at Level 3 Fair Value (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ (8)	$ 15
Included in earnings	(2)	(2)
Included in regulatory assets and liabilities	1	8
Settlements	5	4
Decrease due to the sale of the Clean Energy Businesses	0	(29)
Transfer out of level 3	4	(7)
Ending balance	0	(11)
CECONY \| Subsidiaries
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	(5)	(6)
Included in earnings	(1)	(1)
Included in regulatory assets and liabilities	0	7
Settlements	2	2
Decrease due to the sale of the Clean Energy Businesses	0	0
Transfer out of level 3	4	(7)
Ending balance	$ 0	$ (5)

Summary of Significant Accounting Policies and Other Matters

3 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Summary of Significant Accounting Policies and Other Matters

Accounting Policies

The accounting policies of Con Edison and its subsidiaries conform to generally accepted accounting principles in the United States of America (GAAP). For the Utilities, these accounting principles include the accounting rules for regulated operations and the accounting requirements of the Federal Energy Regulatory Commission (FERC) and the state regulators having jurisdiction.

Investments

Con Edison's investments consist primarily of the investments of Con Edison Transmission that are accounted for under the equity method and the fair value of the Utilities' supplemental retirement income plan and deferred income plan assets.

Investment in Mountain Valley Pipeline, LLC (MVP)

In January 2016, a subsidiary of Con Edison Transmission acquired a 12.5 percent interest in MVP, a company developing a proposed 300-mile gas transmission project (the Mountain Valley Pipeline) in West Virginia and Virginia. During 2019, Con Edison exercised its right to limit, and did limit, its cash contributions to the joint venture to approximately $530 million, that reduced Con Edison Transmission’s interest in MVP to 9.6 percent and 7.9 percent as of December 31, 2022 and 2023, respectively. As of March 31, 2024, Con Edison Transmission's interest in MVP is 7.2 percent and is expected to be reduced to approximately 6.75 percent based on Con Edison Transmission’s previous capping of its cash contributions. As of December 31, 2023 and March 31, 2024, the Mountain Valley Pipeline was approximately 97 percent and 99 percent complete, respectively.

In June 2023, federal legislation to raise the U.S. debt ceiling included provisions declaring the Mountain Valley Pipeline to be in the national interest, expediting the permitting process and moving jurisdiction of challenges of permits to the D.C. Circuit Court of Appeals, from the 4th Circuit Court of Appeals. These actions enabled construction activities to resume in June 2023 and continue without substantial interruption for the duration of 2023. In April 2024, the operator of the Mountain Valley Pipeline announced that it expects to complete construction on or about May 31, 2024, with long-term firm capacity obligations to begin on the first day of month immediately following

the date MVP receives FERC authorization to commence service. The operator also announced it is targeting a total project cost of approximately $7,850 million (including contingency and excluding allowance for funds used during construction). At March 31, 2024, Con Edison Transmission’s carrying value of its investment in MVP was $153 million and its cash contributions to the joint venture amounted to $530 million.

There is risk that the fair value of Con Edison’s investment in MVP may be further impaired in the future. Assumptions and estimates used to test Con Edison’s investment in MVP for impairment may change if adverse developments impacting the construction of the Mountain Valley Pipeline were to occur.

Reclassification

Certain prior period amounts have been reclassified to conform with the current period presentation.

Earnings Per Common Share

Con Edison presents basic and diluted earnings per share (EPS) on the face of its consolidated income statement. Basic EPS is calculated by dividing earnings available to common shareholders (“Net income for common stock” on Con Edison’s consolidated income statement) by the weighted average number of Con Edison common shares outstanding during the period. In the calculation of diluted EPS, weighted average shares outstanding are increased for additional shares that would be outstanding if potentially dilutive securities were converted to common stock.

Potentially dilutive securities for Con Edison consist of restricted stock units and deferred stock units for which the average market price of the common shares for the period was greater than the exercise vesting price.

For the three months ended March 31, 2024 and 2023, basic and diluted EPS for Con Edison are calculated as follows:


	For the Three Months Ended March 31,
(Millions of Dollars, except per share amounts/Shares in Millions)	2024	2023
Net income for common stock	$720	$1,433
Weighted average common shares outstanding – basic	345.5	352.9
Add: Incremental shares attributable to effect of potentially dilutive securities	1.3	1.3
Adjusted weighted average common shares outstanding – diluted	346.8	354.2
Net Income per common share – basic	$2.08	$4.06
Net Income per common share – diluted	$2.08	$4.05

The computation of diluted EPS for the three months ended March 31, 2023 and 2024 excluded approximately 1.9 million shares and an immaterial number of shares, respectively, because of their anti-dilutive effect. The anti-dilutive shares as of March 31, 2023 were calculated factoring in accelerated share repurchase agreements that Con Edison entered into in March 2023 with two dealers to repurchase $1,000 million in aggregate of Con Edison's Common Shares ($0.10 par value) that were settled during the second quarter of 2023.

Changes in Accumulated Other Comprehensive Income/(Loss) by Component

For the three months ended March 31, 2024 and 2023, changes to accumulated other comprehensive income/(loss) (OCI) for Con Edison and CECONY are as follows:


	For the Three Months Ended March 31,
	Con Edison		CECONY
(Millions of Dollars)	2024	2023	2024	2023
Beginning balance, accumulated OCI, net of taxes (a)	$22	$22	$2	$4
OCI before reclassifications, net of tax of $2 for Con Edison in 2024	(4)	—	—	(1)

Amounts reclassified from accumulated OCI related to pension plan liabilities, net of tax (a)(b)	—	4	—	—
Current period OCI, net of taxes	(4)	4	—	(1)
Ending balance, accumulated OCI, net of taxes (a)	$18	$26	$2	$3

(a) Tax reclassified from accumulated OCI is reported in the income tax expense line item of the consolidated income statement.

(b)For the portion of unrecognized pension and other postretirement benefit costs relating to the Utilities, costs are recorded into, and amortized out of, regulatory assets and liabilities instead of OCI. The net actuarial losses and prior service costs recognized during the period are included in the computation of total periodic pension and other postretirement benefit costs. See Notes E and F. For Con Edison in 2023, amounts reclassified also include accumulated OCI of the Clean Energy Businesses that were sold on March 1, 2023. See Note Q.

Reconciliation of Cash, Temporary Cash Investments and Restricted Cash

Cash, temporary cash investments and restricted cash are presented on a combined basis in the Companies’ consolidated statements of cash flows. At March 31, 2024 and 2023, cash, temporary cash investments and restricted cash for Con Edison were as follows; CECONY did not have material restricted cash balances as of March 31, 2024 and 2023:


	At March 31,
	Con Edison
(Millions of Dollars)	2024	2023
Cash and temporary cash investments	$169	$771
Restricted cash (a)	6	2
Total cash, temporary cash investments and restricted cash	$175	$773

(a)On March 1, 2023, Con Edison completed the sale of all of the stock of the Clean Energy Businesses. See Note Q. Con Edison retained one deferred project, Broken Bow II, a 75MW nameplate capacity wind power project located in Nebraska. Con Edison's restricted cash for the 2023 and 2024 periods include restricted cash of Broken Bow II that continued to be classified as held for sale as of March 31, 2024. See Note R.

Variable Interest Entities

The accounting rules for consolidation address the consolidation of a variable interest entity (VIE) by a business enterprise that is the primary beneficiary. A VIE is an entity that does not have a sufficient equity investment at risk to permit it to finance its activities without additional subordinated financial support, or whose equity investors lack the characteristics of a controlling financial interest. The primary beneficiary is the business enterprise that has the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance and either absorbs a significant amount of the VIE’s losses or has the right to receive benefits that could be significant to the VIE.

The Companies enter into arrangements including leases, partnerships and electricity purchase agreements, with various entities. As a result of these arrangements, the Companies retain or may retain a variable interest in these entities.

CECONY has an ongoing long-term electricity purchase agreement with Brooklyn Navy Yard Cogeneration Partners, LP, a potential VIE. In 2023, a request was made of this counterparty for information necessary to determine whether the entity was a VIE and whether CECONY is the primary beneficiary; however, the information was not made available. The payments for this contract constitute CECONY’s maximum exposure to loss with respect to the potential VIE.

Assets Held for Sale

Generally, a long-lived asset or business to be sold is classified as held for sale in the period in which management, with approval from the Board of Directors, commits to a plan to sell, and a sale is expected to be completed within one year. During the first nine months of 2022, Con Edison considered strategic alternatives with respect to the Clean Energy Businesses.

As described further in Note R, on October 1, 2022, Con Edison's management received authority to commit to a plan to sell the Clean Energy Businesses and entered into a purchase and sale agreement. On March 1, 2023, Con Edison completed the sale of all of the stock of the Clean Energy Businesses with the exception of two tax equity interests and one deferred project, Broken Bow II. Broken Bow II continued to be classified as held for sale as of March 31, 2024. See Note R.

Fair value is the amount at which an asset, liability or business could be bought or sold in a current transaction between willing parties and may be estimated using a number of techniques, or may be observable using quoted market prices. Con Edison used a market approach consisting of the contractual sales price adjusted for estimated working capital and other contractual purchase price adjustments to determine the fair value of the Clean Energy Businesses as of December 31, 2022, and subtracted estimated costs to sell from that calculated fair value. The resulting net fair value of the Clean Energy Businesses' assets exceeded the carrying value of the Clean Energy Businesses' assets through the sale date in March 2023, and accordingly no impairments were recorded.

The sale of the Clean Energy Businesses did not represent a strategic shift that had or would have had a major effect on Con Edison, and as such, the sale did not qualify for treatment as a discontinued operation.

For further information, see Note R.

Related Party Transactions - Summary of Costs of Administrative and Other Services Provided and Received (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Related Party Transaction [Line Items]
Total revenues	$ 4,280	$ 4,403
Cost of services received	3,239	3,519
CECONY
Related Party Transaction [Line Items]
Total revenues	3,971	3,953
Cost of services received	2,982	3,144
CECONY \| Related Party
Related Party Transaction [Line Items]
Total revenues	32	33
Cost of services received	$ 20	$ 19

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

+ Details

Material Contingencies

3 Months Ended

Mar. 31, 2024

Commitments and Contingencies Disclosure [Abstract]

Material Contingencies

Manhattan Explosion and Fire

On March 12, 2014, two multi-use five-story tall buildings located on Park Avenue between 116th and 117th Streets in Manhattan were destroyed by an explosion and fire. CECONY had delivered gas to the buildings through service lines from a distribution main located below ground on Park Avenue. Eight people died and more than 50 people were injured. Additional buildings were also damaged. The National Transportation Safety Board (NTSB) investigated. The parties to the investigation included CECONY, the City of New York, the Pipeline and Hazardous Materials Safety Administration and the NYSPSC. In June 2015, the NTSB issued a final report concerning the incident, its probable cause and safety recommendations. The NTSB determined that the probable cause of the incident was (1) the failure of a defective fusion joint at a service tee (which joined a plastic service line to a plastic distribution main) installed by CECONY that allowed gas to leak from the distribution main and migrate into a building where it ignited and (2) a breach in a city sewer line that allowed groundwater and soil to flow into the sewer, resulting in a loss of support for the distribution main, that caused it to sag and overstressed the defective fusion joint. The NTSB also made safety recommendations, including recommendations to CECONY that addressed its procedures for the preparation and examination of plastic fusions, training of its staff on conditions for notifications to the city’s Fire Department and extension of its gas main isolation valve installation program. In February 2017, the NYSPSC approved a settlement agreement with CECONY related to the NYSPSC's investigations of the incident and the practices of qualifying persons to perform plastic fusions. Pursuant to the agreement, CECONY provided $27 million of future benefits to customers (for which it accrued a regulatory liability) and did not recover from customers $126 million of costs for gas emergency response activities that it had previously incurred and expensed. Lawsuits are pending against CECONY seeking generally unspecified damages and, in some cases, punitive damages, for wrongful death, personal injury, property damage and business interruption. CECONY notified its insurers of the incident and believes that the policies in force at the time of the incident will cover CECONY’s costs, in excess of a required retention (the amount of which is not material), to satisfy any liability it may have for damages in connection with the incident. During 2020, CECONY accrued its estimated liability for the suits of $40 million and an insurance receivable in the same amount, and such estimated liability and receivable did not change as of March 31, 2024.

Other Contingencies

For additional contingencies, see "Other Regulatory Matters" in Note B, Note G and “Uncertain Tax Positions” in Note J.

Guarantees

Con Edison and its subsidiaries have entered into various agreements providing financial or performance assurance primarily to third parties on behalf of their subsidiaries. In addition, Con Edison has provided guarantees to third parties on behalf of the Clean Energy Businesses, that are in the process of being transferred to the buyer of the Clean Energy Businesses, RWE Aktiengesellschaft (RWE). Maximum amounts guaranteed by Con Edison and its subsidiaries under these agreements totaled $124 million and $175 million at March 31, 2024 and December 31, 2023, respectively.

A summary, by type and term, of Con Edison's total guarantees under these agreements at March 31, 2024 is as follows:


Guarantee Type	0 – 3 years	4 – 10 years	> 10 years	Total
	(Millions of Dollars)
Con Edison Transmission	$76	$—	$—	$76
Guarantees on behalf of the Clean Energy Businesses (a)	7	7	25	39
Broken Bow II	—	—	9	9

Total	$83	$7	$34	$124

(a) On March 1, 2023, Con Edison completed the sale of all of the stock of the Clean Energy Businesses. See Note Q and Note R. Guarantee amount shown represents guarantees issued on behalf of the Clean Energy Businesses that remain outstanding at March 31, 2024. Prior to and following the sale, RWE, with Con Edison's assistance, engaged in the process of transferring responsibility for these guarantees from Con Edison to RWE and that process is ongoing. Pursuant to the purchase and sale agreement, RWE is obligated to reimburse and hold harmless Con Edison for any payments Con Edison makes under guarantees issued by Con Edison on behalf of the Clean Energy Businesses. As of March 31, 2024, no such payments have been, or are probable of being, made.

Con Edison Transmission — Con Edison has guaranteed payment by Con Edison Transmission of the contributions Con Edison Transmission agreed to make to New York Transco LLC (New York Transco). Con Edison Transmission owns a 45.7 percent interest in New York Transco’s New York Energy Solution project, the majority of which has been completed. Guarantee amount shown includes the maximum possible required amount of Con Edison Transmission's contributions for the remainder of this project as calculated based on the assumptions that the project is completed at 175 percent of its estimated remaining costs and New York Transco does not use any debt financing for the project.

Broken Bow II — Con Edison has guaranteed obligations on behalf of Broken Bow II associated with its investment in a wind energy facility. Broken Bow II is held for sale as of March 31, 2024. See Note R.

General (Details)	3 Months Ended
General (Details)	Mar. 31, 2024 registrant subsidiary
Accounting Policies [Abstract]
Number of registrants \| registrant	2
Number of regulated utility subsidiaries \| subsidiary	2

Short-Term Borrowing (Details)	1 Months Ended		3 Months Ended	12 Months Ended
Short-Term Borrowing (Details)	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Short-term Debt [Line Items]
Ratio of consolidated debt to consolidated total capital				65
Maximum aggregate limit of failure to pay debt or derivative obligations				$ 150,000,000
Commercial paper, outstanding	$ 2,299,000,000		$ 2,299,000,000	$ 2,288,000,000
Weighted average interest rate of commercial paper (in percent)			5.50%	5.60%
Loans payable	0		$ 0	$ 0
Credit Availability Through March 2028 \| Revolving Credit Facility
Short-term Debt [Line Items]
Maximum borrowing capacity	2,500,000,000		2,500,000,000
CECONY
Short-term Debt [Line Items]
Commercial paper, outstanding	1,857,000,000		$ 1,857,000,000	$ 1,903,000,000
Weighted average interest rate of commercial paper (in percent)			5.50%	5.60%
CECONY \| Subsidiaries
Short-term Debt [Line Items]
Loans payable	$ 0		$ 0	$ 0
CECONY \| March 2022 Credit Agreement Variable Rate 364 Day Revolving Credit Agreement \| Revolving Credit Facility \| Subsidiaries
Short-term Debt [Line Items]
Debt instrument term (in years)		364 days
CECONY \| March 2023 Credit Agreement Variable Rate 364 Day Revolving Credit Agreement \| Revolving Credit Facility \| Subsidiaries
Short-term Debt [Line Items]
Debt instrument term (in years)	364 days
Maximum borrowing capacity		$ 500,000,000

Leases - Additional Information (Details) - CECONY - Subsidiaries	Mar. 31, 2024
Lessee, Lease, Description [Line Items]
Operating lease, lease not yet commenced, expected period to commence (in years)	3 years
Operating lease, not yet commenced, term of contract (in years)	15 years

CONSOLIDATED BALANCE SHEET (UNAUDITED) - CECONY - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
CURRENT ASSETS
Cash and temporary cash investments	$ 169	$ 1,189
Accounts receivable – customers, net allowance for uncollectible accounts	2,618	2,418
Other receivables, net allowance for uncollectible accounts	299	444
Accrued unbilled revenue	771	722
Fuel oil, gas in storage, materials and supplies, at average cost	442	469
Prepayments	1,023	470
Regulatory assets	210	281
Revenue decoupling mechanism receivable	280	203
Fair value of derivative assets	88	52
Other current assets	102	125
TOTAL CURRENT ASSETS	6,166	6,537
INVESTMENTS	1,041	999
UTILITY PLANT, AT ORIGINAL COST
General	4,755	4,835
TOTAL	62,136	61,309
Less: Accumulated depreciation	14,776	14,157
Net	47,360	47,152
Construction work in progress	2,481	2,442
NET UTILITY PLANT	49,841	49,594
NON-UTILITY PLANT
Non-utility property, net accumulated depreciation of $25 in 2024 and 2023	12	13
NET PLANT	49,854	49,608
OTHER NONCURRENT ASSETS
Regulatory assets	5,050	4,607
Operating lease right-of-use asset	521	533
Pension and retiree benefits	3,267	3,275
Fair value of derivative assets	48	48
Other deferred charges and noncurrent assets	325	316
TOTAL OTHER NONCURRENT ASSETS	9,619	9,187
TOTAL ASSETS	66,680	66,331
CURRENT LIABILITIES
Long-term debt due within one year	250	250
Notes payable	2,299	2,288
Accounts payable	1,439	1,775
Customer deposits	411	396
Accrued taxes	63	73
Accrued interest	298	170
Accrued wages	127	125
Fair value of derivative liabilities	113	193
Regulatory liabilities	258	145
System benefit charge	406	444
Operating lease liabilities	116	116
Other current liabilities	387	411
TOTAL CURRENT LIABILITIES	6,244	6,462
NONCURRENT LIABILITIES
Provision for injuries and damages	183	188
Pensions and retiree benefits	633	592
Superfund and other environmental costs	1,112	1,118
Asset retirement obligations	527	522
Fair value of derivative liabilities	94	121
Deferred income taxes and unamortized investment tax credits	8,338	8,069
Operating lease liabilities	430	429
Regulatory liabilities	5,174	5,328
Other deferred credits and noncurrent liabilities	401	417
TOTAL NONCURRENT LIABILITIES	16,892	16,784
LONG-TERM DEBT	21,929	21,927
COMMITMENTS, CONTINGENCIES, AND GUARANTEES (Note B, Note G, and Note H)
EQUITY
Common shareholders’ equity	21,615	21,158
TOTAL LIABILITIES AND EQUITY	66,680	66,331
CECONY
CURRENT ASSETS
Cash and temporary cash investments	104	1,138
Other receivables, net allowance for uncollectible accounts	244	332
Accrued unbilled revenue	712	678
Fuel oil, gas in storage, materials and supplies, at average cost	400	422
Prepayments	875	329
Regulatory assets	191	254
Revenue decoupling mechanism receivable	275	190
Fair value of derivative assets	82	49
Other current assets	89	113
TOTAL CURRENT ASSETS	5,624	5,981
INVESTMENTS	633	608
UTILITY PLANT, AT ORIGINAL COST
General	4,432	4,530
TOTAL	58,410	57,649
Less: Accumulated depreciation	13,771	13,171
Net	44,639	44,478
Construction work in progress	2,211	2,168
NET UTILITY PLANT	46,850	46,646
NON-UTILITY PLANT
Non-utility property, net accumulated depreciation of $25 in 2024 and 2023	1	2
NET PLANT	46,851	46,648
OTHER NONCURRENT ASSETS
Regulatory assets	4,757	4,314
Operating lease right-of-use asset	521	532
Pension and retiree benefits	3,202	3,184
Fair value of derivative assets	47	49
Other deferred charges and noncurrent assets	269	284
TOTAL OTHER NONCURRENT ASSETS	8,796	8,363
TOTAL ASSETS	61,904	61,600
CURRENT LIABILITIES
Long-term debt due within one year	250	250
Notes payable	1,857	1,903
Customer deposits	394	378
Accrued interest	283	159
Accrued wages	115	114
Fair value of derivative liabilities	103	179
Regulatory liabilities	210	107
System benefit charge	369	406
Operating lease liabilities	116	116
Other current liabilities	349	381
TOTAL CURRENT LIABILITIES	5,418	5,694
NONCURRENT LIABILITIES
Provision for injuries and damages	178	185
Pensions and retiree benefits	581	542
Superfund and other environmental costs	1,020	1,026
Asset retirement obligations	525	520
Fair value of derivative liabilities	85	108
Deferred income taxes and unamortized investment tax credits	8,249	7,984
Operating lease liabilities	430	429
Regulatory liabilities	4,687	4,818
Other deferred credits and noncurrent liabilities	322	338
TOTAL NONCURRENT LIABILITIES	16,077	15,950
LONG-TERM DEBT	20,812	20,810
COMMITMENTS, CONTINGENCIES, AND GUARANTEES (Note B, Note G, and Note H)
EQUITY
Common shareholders’ equity	19,597	19,146
TOTAL LIABILITIES AND EQUITY	61,904	61,600
Related Party \| CECONY
CURRENT ASSETS
Accounts receivable – customers, net allowance for uncollectible accounts	142	146
CURRENT LIABILITIES
Accounts payable	20	16
Accrued taxes	1	1
Nonrelated Party \| CECONY
CURRENT ASSETS
Accounts receivable – customers, net allowance for uncollectible accounts	2,510	2,330
CURRENT LIABILITIES
Accounts payable	1,305	1,629
Accrued taxes	46	55
Electric
UTILITY PLANT, AT ORIGINAL COST
Utility plant, at original cost	39,771	39,071
Electric \| CECONY
UTILITY PLANT, AT ORIGINAL COST
Utility plant, at original cost	37,485	36,808
Gas
UTILITY PLANT, AT ORIGINAL COST
Utility plant, at original cost	14,500	14,318
Gas \| CECONY
UTILITY PLANT, AT ORIGINAL COST
Utility plant, at original cost	13,384	13,226
Steam
UTILITY PLANT, AT ORIGINAL COST
Utility plant, at original cost	3,110	3,085
Steam \| CECONY
UTILITY PLANT, AT ORIGINAL COST
Utility plant, at original cost	$ 3,109	$ 3,085

Material Contingencies (Tables)

3 Months Ended

Mar. 31, 2024

Commitments and Contingencies Disclosure [Abstract]

Summary of Total Guarantees

A summary, by type and term, of Con Edison's total guarantees under these agreements at March 31, 2024 is as follows:


Guarantee Type	0 – 3 years	4 – 10 years	> 10 years	Total
	(Millions of Dollars)
Con Edison Transmission	$76	$—	$—	$76
Guarantees on behalf of the Clean Energy Businesses (a)	7	7	25	39
Broken Bow II	—	—	9	9

Total	$83	$7	$34	$124

Summary of Significant Accounting Policies and Other Matters - Narrative (Details) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended		12 Months Ended
	Jan. 31, 2016 mi	Mar. 31, 2024 USD ($) project shares	Mar. 31, 2023 USD ($) dealer $ / shares shares	Dec. 31, 2019 USD ($)	Apr. 30, 2024 USD ($)	Dec. 31, 2023	Mar. 01, 2023 project	Dec. 31, 2022
Schedule of Equity Method Investments [Line Items]
Antidilutive shares (in shares) \| shares		0	1,900,000
Number of dealers \| dealer			2
Par value of common stock (in usd per share) \| $ / shares			$ 0.10
Authorized repurchased amount			$ 1,000
Disposal Group, Held-for-sale, Not Discontinued Operations \| Clean Energy Businesses
Schedule of Equity Method Investments [Line Items]
Tax equity projects \| project		3					2
Mountain Valley Pipeline LLC \| Con Edison Gas Pipeline and Storage, LLC
Schedule of Equity Method Investments [Line Items]
Ownership percentage (in percent)		7.20%				7.90%		9.60%
Number of miles in pipeline construction \| mi	300
Cash contributions for equity method investments		$ 530		$ 530
Equity method investment, ownership percentage, expected percentage		0.0675
Equity method investment, project percent completion (in percent)		99.00%				97.00%
Equity method investments		$ 153
Mountain Valley Pipeline LLC \| Con Edison Gas Pipeline and Storage, LLC \| Subsequent Event
Schedule of Equity Method Investments [Line Items]
Aggregate project cost					$ 7,850
Mountain Valley Pipeline LLC \| Con Edison Gas Pipeline and Storage, LLC \| Mountain Valley Pipeline LLC
Schedule of Equity Method Investments [Line Items]
Ownership percentage (in percent)	12.50%
Broken Bow II \| Clean Energy Businesses \| Electric Energy (MWh)
Schedule of Equity Method Investments [Line Items]
Deferred projects \| project		1					1

Pension Benefits - Total Periodic Benefit Costs (Details) - Pension Benefits - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Service cost – including administrative expenses	$ 43	$ 41
Interest cost on projected benefit obligation	159	162
Expected return on plan assets	(282)	(279)
Recognition of net actuarial gain	(4)	(58)
Recognition of prior service credit	(4)	(4)
TOTAL PERIODIC BENEFIT CREDIT	(88)	(138)
Cost capitalized	(22)	(21)
Reconciliation to rate level	18	73
Total credit recognized	(92)	(86)
CECONY \| Subsidiaries
Defined Benefit Plan Disclosure [Line Items]
Service cost – including administrative expenses	40	38
Interest cost on projected benefit obligation	150	153
Expected return on plan assets	(269)	(265)
Recognition of net actuarial gain	(4)	(55)
Recognition of prior service credit	(5)	(5)
TOTAL PERIODIC BENEFIT CREDIT	(88)	(134)
Cost capitalized	(22)	(20)
Reconciliation to rate level	16	68
Total credit recognized	$ (94)	$ (86)

Revenue Recognition - Change in Unbilled Contract and Unearned Revenues (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Jan. 01, 2023
Unbilled contract revenue
Beginning balance	$ 4	$ 80	$ 80
Additions	0	2
Subtractions	0	33
Ending balance	4	49	4
Unearned revenue
Beginning balance	0	3	3
Additions	0	0
Subtractions	0	3
Ending balance	$ 0	$ 0	0
Contracts with customer, revenue recognized, amount outstanding end of last period				$ 3
Clean Energy Businesses
Unbilled contract revenue
Subtractions			21
Unearned revenue
Subtractions			$ 1

Summary of Significant Accounting Policies and Other Matters (Tables)

3 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Basic and Diluted Earnings Per Share

For the three months ended March 31, 2024 and 2023, basic and diluted EPS for Con Edison are calculated as follows:


	For the Three Months Ended March 31,
(Millions of Dollars, except per share amounts/Shares in Millions)	2024	2023
Net income for common stock	$720	$1,433
Weighted average common shares outstanding – basic	345.5	352.9
Add: Incremental shares attributable to effect of potentially dilutive securities	1.3	1.3
Adjusted weighted average common shares outstanding – diluted	346.8	354.2
Net Income per common share – basic	$2.08	$4.06
Net Income per common share – diluted	$2.08	$4.05

Changes in Accumulated Other Comprehensive Income/(Loss)

For the three months ended March 31, 2024 and 2023, changes to accumulated other comprehensive income/(loss) (OCI) for Con Edison and CECONY are as follows:


	For the Three Months Ended March 31,
	Con Edison		CECONY
(Millions of Dollars)	2024	2023	2024	2023
Beginning balance, accumulated OCI, net of taxes (a)	$22	$22	$2	$4
OCI before reclassifications, net of tax of $2 for Con Edison in 2024	(4)	—	—	(1)

Amounts reclassified from accumulated OCI related to pension plan liabilities, net of tax (a)(b)	—	4	—	—
Current period OCI, net of taxes	(4)	4	—	(1)
Ending balance, accumulated OCI, net of taxes (a)	$18	$26	$2	$3

(a) Tax reclassified from accumulated OCI is reported in the income tax expense line item of the consolidated income statement.

Restrictions on Cash and Cash Equivalents

At March 31, 2024 and 2023, cash, temporary cash investments and restricted cash for Con Edison were as follows; CECONY did not have material restricted cash balances as of March 31, 2024 and 2023:


	At March 31,
	Con Edison
(Millions of Dollars)	2024	2023
Cash and temporary cash investments	$169	$771
Restricted cash (a)	6	2
Total cash, temporary cash investments and restricted cash	$175	$773

Schedule of Cash and Cash Equivalents

At March 31, 2024 and 2023, cash, temporary cash investments and restricted cash for Con Edison were as follows; CECONY did not have material restricted cash balances as of March 31, 2024 and 2023:


	At March 31,
	Con Edison
(Millions of Dollars)	2024	2023
Cash and temporary cash investments	$169	$771
Restricted cash (a)	6	2
Total cash, temporary cash investments and restricted cash	$175	$773

Income Tax (Tables)

3 Months Ended

Mar. 31, 2024

Income Tax Disclosure [Abstract]

Schedule of Income Tax Reconciliation

Reconciliation of the difference between income tax expense and the amount computed by applying the prevailing statutory income tax rate to income before income taxes for the three months ended March 31, 2024 and 2023 is as follows:


	For the Three Months Ended March 31,
	Con Edison				CECONY
(% of Pre-tax income)	2024		2023		2024		2023
STATUTORY TAX RATE
Federal	21	%	21	%	21	%	21	%
Changes in computed taxes resulting from:
State income tax, net of federal income taxes	5		5		5		5
Amortization of excess deferred federal income taxes	(6)		(3)		(5)		(6)

Cost of removal	1		—		1		1



Allowance for uncollectible accounts, net of COVID-19 assistance	(1)		—		(1)		(1)








Impacts from the sale of the Clean Energy Businesses:
Deferred unamortized ITC recognized on sale of subsidiary	—		(7)		—		—
Changes in state apportionments, net of federal income taxes	—		(3)		—		—
Valuation allowance on state NOLs, net of federal income tax	—		1		—		—




Effective tax rate	20	%	14	%	21	%	20	%

Derivative Instruments and Hedging Activities

3 Months Ended

Mar. 31, 2024

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments and Hedging Activities

Con Edison’s subsidiaries hedge market price fluctuations associated with physical purchases and sales of electricity, natural gas, steam and, to a lesser extent, refined fuels by using derivative instruments including futures, forwards, basis swaps, options, transmission congestion contracts and financial transmission rights contracts. These are economic hedges, for which the Utilities do not elect hedge accounting. The Companies use economic hedges to manage commodity price risk in accordance with provisions set by state regulators. The volume of hedging activity at the Utilities depends upon the forecasted volume of physical commodity supply to meet customer needs, and program costs or benefits are recovered from or credited to full-service customers, respectively. Derivatives are recognized on the consolidated balance sheet at fair value (see Note O), unless an exception is available under the accounting rules for derivatives and hedging. Qualifying derivative contracts that have been designated as normal purchases or normal sales contracts are not reported at fair value under the accounting rules. On March 1, 2023, Con Edison completed the sale of all of the stock of the Clean Energy Businesses. See Note Q and Note R.

The fair values of the Companies’ derivatives including the offsetting of assets and liabilities on the consolidated balance sheet at March 31, 2024 and December 31, 2023 were:


(Millions of Dollars)	2024				2023
Balance Sheet Location	Gross Amounts of Recognized Assets/(Liabilities)	Gross Amounts Offset	Net Amounts of Assets/ (Liabilities) (a)		Gross Amounts of Recognized Assets/(Liabilities)	Gross Amounts Offset	Net Amounts of Assets/ (Liabilities) (a)
Con Edison
Fair value of derivative assets
Current	$127	$(46)	$81	(b)	$83	$(38)	$45	(b)
Noncurrent	71	(23)	48		77	(29)	48


Total fair value of derivative assets	$198	$(69)	$129		$160	$(67)	$93
Fair value of derivative liabilities
Current	$(164)	$58	$(106)	(b)	$(230)	$52	$(178)	(b)
Noncurrent	(123)	29	(94)		(154)	33	(121)


Total fair value of derivative liabilities	$(287)	$87	$(200)		$(384)	$85	$(299)
Net fair value derivative assets/(liabilities)	$(89)	$18	$(71)		$(224)	$18	$(206)
CECONY
Fair value of derivative assets
Current	$121	$(45)	$76	(b)	$78	$(35)	$43	(b)
Noncurrent	69	(22)	47		76	(27)	49
Total fair value of derivative assets	$190	$(67)	$123		$154	$(62)	$92
Fair value of derivative liabilities
Current	$(156)	$55	$(101)	(b)	$(217)	$48	$(169)
Noncurrent	(112)	27	(85)		(139)	31	(108)
Total fair value of derivative liabilities	$(268)	$82	$(186)		$(356)	$79	$(277)
Net fair value derivative assets/(liabilities)	$(78)	$15	$(63)		$(202)	$17	$(185)

(a)Derivative instruments and collateral were offset on the consolidated balance sheet as applicable under the accounting rules. The Companies enter into master agreements for their commodity derivatives. These agreements typically provide offset in the event of contract termination. In such case, generally the non-defaulting party’s payable will be offset by the defaulting party’s payable. The non-defaulting party will customarily notify the defaulting party within a specific time period and come to an agreement on the early termination amount.

(b)At March 31, 2024, margin deposits for Con Edison ($7 million and $(7) million) were classified as derivative assets and derivative liabilities, respectively, and for CECONY ($6 million and $(2) million) were classified as derivative assets and derivative liabilities, respectively, on the consolidated balance sheet, but not included in the table. At December 31, 2023 margin deposits for Con Edison and CECONY of $7 million and $6 million were classified as derivative assets, and $(15) million and $(10) million, respectively were classified as derivative liabilities on the consolidated balance sheet, but not included in the table. Margin is collateral, typically cash, that the holder of a derivative instrument is required to deposit in order to transact on an exchange and to cover its potential losses with its broker or the exchange.

The Utilities generally recover their prudently incurred fuel, purchased power and gas costs, including hedging gains and losses, in accordance with rate provisions approved by the applicable state utility regulators. In accordance with the accounting rules for regulated operations, the Utilities record a regulatory asset or regulatory liability to defer recognition of unrealized gains and losses on their electric and gas derivatives. As gains and losses are realized in future periods, they will be recognized as purchased power, gas and fuel costs in the Companies’ consolidated income statements.

The Clean Energy Businesses recorded realized and unrealized gains and losses on their derivative contracts in gas purchased for resale and non-utility revenue in the reporting period in which they occurred. The Clean Energy Businesses recorded changes in the fair value of their interest rate swaps in other interest expense at the end of each reporting period. Management believes that these derivative instruments represent economic hedges that mitigate exposure to fluctuations in commodity prices and interest rates. On March 1, 2023, Con Edison completed the sale of all of the stock of the Clean Energy Businesses. See Note Q and Note R.

The following table presents the realized and unrealized gains or losses on derivatives that have been deferred or recognized in earnings for the three months ended March 31, 2024 and 2023:


		For the Three Months Ended March 31,
		Con Edison		CECONY
(Millions of Dollars)	Balance Sheet Location	2024	2023	2024	2023
Pre-tax gains/(losses) deferred in accordance with accounting rules for regulated operations:
Current	Regulatory liabilities	$43	$(149)	$40	$(137)
Noncurrent	Regulatory liabilities	(2)	(126)	(2)	(111)
Total deferred gains/(losses)		$41	$(275)	$38	$(248)
Current	Regulatory assets	$67	$(16)	$63	$(12)
Current	Recoverable energy costs	(114)	(291)	(104)	(274)
Noncurrent	Regulatory assets	30	(133)	26	(130)
Total deferred gains/(losses)		$(17)	$(440)	$(15)	$(416)
Net deferred gains/(losses) (a)		$24	$(715)	$23	$(664)
	Income Statement Location
Pre-tax gains/(losses) recognized in income
	Gas purchased for resale	$—	$4	$—	$—
	Non-utility revenue	—	17	—	—
	Other operations and maintenance expense	1	—	1	—
	Other interest expense (b)	—	5	—	—
Total pre-tax gains/(losses) recognized in income		$1	$26	$1	$—

(a)Unrealized net deferred losses on electric and gas derivatives for the Utilities decreased as a result of higher electric and gas commodity prices during the three months ended March 31, 2024. Upon settlement, short-term deferred derivative losses generally increase the recoverable costs of electric and gas purchases.

(b)Comprised of amounts related to interest rate swaps of the Clean Energy Businesses. On March 1, 2023, Con Edison completed the sale of all of the stock of the Clean Energy Businesses. See Note Q and Note R.

The following table presents the hedged volume of Con Edison’s and CECONY’s commodity derivative transactions at March 31, 2024:


	Electric Energy (MWh) (a)(b)	Capacity (MW-mos) (a)	Natural Gas (Dt) (a)(b)	Refined Fuels (gallons)
Con Edison	31,374,625	42,600	296,190,000	4,032,000
CECONY	28,801,875	33,600	278,560,000	4,032,000

(a)Volumes are reported net of long and short positions, except natural gas collars where the volumes of long positions are reported.

(b)Excludes electric congestion and gas basis swap contracts which are associated with electric and gas contracts and hedged volumes.

The Companies are exposed to credit risk related to transactions entered into primarily for the various energy supply and hedging activities by the Utilities. Credit risk relates to the loss that may result from a counterparty’s nonperformance. The Companies use credit policies to manage this risk, including an established credit approval process, monitoring of counterparty limits, netting provisions within agreements, collateral or prepayment arrangements, credit insurance and credit default swaps. The Companies measure credit risk exposure as the replacement cost for open energy commodity and derivative positions plus amounts owed from counterparties for settled transactions. The replacement cost of open positions represents unrealized gains, net of any unrealized losses where the Companies have a legally enforceable right to offset.

At March 31, 2024, Con Edison and CECONY had $88 million and $84 million, respectively, of credit exposure in connection with open energy supply net receivables and hedging activities, net of collateral. Con Edison’s net credit exposure consisted of $5 million with investment-grade counterparties, $7 million with commodity exchange brokers, and $76 million with non-investment grade/non-rated counterparties. CECONY’s net credit exposure consisted of $2 million with investment-grade counterparties, $6 million with commodity exchange brokers, and $76 million with non-investment grade/non-rated counterparties. On March 1, 2023, Con Edison completed the sale of all of the stock of the Clean Energy Businesses. See Note Q and Note R.

The collateral requirements associated with, and settlement of, derivative transactions are included in net cash flows from operating activities in the Companies’ consolidated statement of cash flows. Most derivative instrument contracts contain provisions that may require a party to provide collateral on its derivative instruments that are in a

net liability position. The amount of collateral to be provided will depend on the fair value of the derivative instruments and the party’s credit ratings.

The following table presents the aggregate fair value of the Companies’ derivative instruments with credit-risk-related contingent features that are in a net liability position, the collateral posted for such positions and the additional collateral that would have been required to be posted had the lowest applicable credit rating been reduced one level and to below investment grade at March 31, 2024:


(Millions of Dollars)	Con Edison (a)	CECONY (a)
Aggregate fair value – net liabilities	$164	$153
Collateral posted	255	255
Additional collateral (b) (downgrade one level from current ratings)	10	—
Additional collateral (b)(c) (downgrade to below investment grade from current ratings)	74	56

(a)Non-derivative transactions for the purchase and sale of electricity and gas and qualifying derivative instruments, that have been designated as normal purchases or normal sales, are excluded from the table. These transactions primarily include purchases of electricity from independent system operators. In the event the Utilities are no longer extended unsecured credit for such purchases, the Companies would be required to post $1 million of additional collateral at March 31, 2024. For certain other such non-derivative transactions, the Companies could be required to post collateral under certain circumstances, including in the event counterparties had reasonable grounds for insecurity.

(b)The Companies measure the collateral requirements by taking into consideration the fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position plus amounts owed to counterparties for settled transactions and amounts required by counterparties for minimum financial security. The fair value amounts represent unrealized losses, net of any unrealized gains where the Companies have a legally enforceable right to offset.

(c)Derivative instruments that are net assets have been excluded from the table. At March 31, 2024, if Con Edison had been downgraded to below investment grade, it would have been required to post additional collateral for such derivative instruments of $5 million.

Derivative Instruments and Hedging Activities - Credit-Risk-Related Contingent Features (Details) $ in Millions	Mar. 31, 2024 USD ($)
Derivatives, Fair Value [Line Items]
Aggregate fair value – net liabilities	$ 164
Collateral posted	255
Additional collateral (downgrade to below investment grade from current ratings)	1
Derivatives in net asset position additional collateral	5
Downgrade One Level from Current Ratings
Derivatives, Fair Value [Line Items]
Additional collateral (downgrade one level from current ratings)	10
Downgrade to Below Investment Grade from Current Ratings
Derivatives, Fair Value [Line Items]
Additional collateral (downgrade one level from current ratings)	74
CECONY \| Subsidiaries
Derivatives, Fair Value [Line Items]
Aggregate fair value – net liabilities	153
Collateral posted	255
CECONY \| Downgrade One Level from Current Ratings \| Subsidiaries
Derivatives, Fair Value [Line Items]
Additional collateral (downgrade one level from current ratings)	0
CECONY \| Downgrade to Below Investment Grade from Current Ratings \| Subsidiaries
Derivatives, Fair Value [Line Items]
Additional collateral (downgrade one level from current ratings)	$ 56

Leases

3 Months Ended

Mar. 31, 2024

Leases [Abstract]

Leases

Operating lease cost and cash paid for amounts included in the measurement of lease liabilities for the three months ended March 31, 2024 and 2023 were as follows:


	For the Three Months Ended March 31,
	Con Edison		CECONY
(Millions of Dollars)	2024	2023(a)	2024	2023
Operating lease cost	$17	$20	$16	$17
Operating lease cash flows	$5	$7	$4	$4

(a) Amounts for Con Edison include amounts for the Clean Energy Businesses through February 2023. On March 1, 2023, Con Edison completed the sale of all of the stock of the Clean Energy Businesses. See Note Q and Note R.

At March 31, 2024, CECONY had an operating lease agreement that had not yet commenced for a battery storage facility. This lease is expected to commence within three years, with a lease term of approximately 15 years. For the three months ended March 31, 2024 and 2023, there were no material right-of-use assets obtained in exchange for operating lease obligations for Con Edison and CECONY, nor any material lease terminations.

Leases

Operating lease cost and cash paid for amounts included in the measurement of lease liabilities for the three months ended March 31, 2024 and 2023 were as follows:


	For the Three Months Ended March 31,
	Con Edison		CECONY
(Millions of Dollars)	2024	2023(a)	2024	2023
Operating lease cost	$17	$20	$16	$17
Operating lease cash flows	$5	$7	$4	$4

Other Postretirement Benefits

3 Months Ended

Mar. 31, 2024

Retirement Benefits [Abstract]

Other Postretirement Benefits

Total Periodic Benefit Credit

The components of the Companies’ total periodic postretirement benefit credit for the three months ended March 31, 2024 and 2023 were as follows:


	For the Three Months Ended March 31,
	Con Edison		CECONY
(Millions of Dollars)	2024	2023	2024	2023
Service cost - including administrative expenses	$3	$4	$3	$3
Interest cost on projected other postretirement benefit obligation	12	14	10	12
Expected return on plan assets	(17)	(18)	(14)	(14)
Recognition of net actuarial gain	(5)	(4)	(3)	(2)
TOTAL PERIODIC OTHER POSTRETIREMENT CREDIT	$(7)	$(4)	$(4)	$(1)
Cost capitalized	(2)	(2)	(1)	(1)
Reconciliation to rate level	4	1	2	—
Total credit recognized	$(5)	$(5)	$(3)	$(2)

For information about the presentation of the components of other postretirement benefit credit, see Note E.

Expected Contributions

Based on estimates as of March 31, 2024, the Companies expect to make a contribution of $7 million (all of which is expected to be made by CECONY) to the other postretirement benefit plans in 2024. The Companies’ policy is to fund the total periodic benefit cost of the plans to the extent tax deductible.

Regulatory Matters - Regulatory Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Regulatory Liabilities [Line Items]
Regulatory liabilities – noncurrent	$ 5,174	$ 5,328
Regulatory liabilities – current	258	145
Total Regulatory Liabilities	5,432	5,473
Regulatory assets	5,050	4,607
Future income tax
Regulatory Liabilities [Line Items]
Regulatory liabilities – noncurrent	1,469	1,535
Allowance for cost of removal less salvage
Regulatory Liabilities [Line Items]
Regulatory liabilities – noncurrent	1,468	1,456
Unrecognized pension and other postretirement costs
Regulatory Liabilities [Line Items]
Regulatory liabilities – noncurrent	798	943
Pension and other postretirement benefit deferrals
Regulatory Liabilities [Line Items]
Regulatory liabilities – noncurrent	315	284
Net unbilled revenue deferrals
Regulatory Liabilities [Line Items]
Regulatory liabilities – noncurrent	288	278
Late payment charge deferral
Regulatory Liabilities [Line Items]
Regulatory liabilities – noncurrent	205	167
System benefit charge carrying charge
Regulatory Liabilities [Line Items]
Regulatory liabilities – noncurrent	98	92
Deferred derivative gains - long term
Regulatory Liabilities [Line Items]
Regulatory liabilities – noncurrent	48	49
Net proceeds from sale of property
Regulatory Liabilities [Line Items]
Regulatory liabilities – noncurrent	42	48
Settlement of prudence proceeding
Regulatory Liabilities [Line Items]
Regulatory liabilities – noncurrent	11	11
Other
Regulatory Liabilities [Line Items]
Regulatory liabilities – noncurrent	432	465
Deferred derivative gains - short term
Regulatory Liabilities [Line Items]
Regulatory liabilities – current	117	74
Refundable energy costs
Regulatory Liabilities [Line Items]
Regulatory liabilities – current	140	71
Revenue decoupling mechanism
Regulatory Liabilities [Line Items]
Regulatory liabilities – current	1	0
CECONY
Regulatory Liabilities [Line Items]
Regulatory liabilities – noncurrent	4,687	4,818
Regulatory liabilities – current	210	107
Regulatory assets	4,757	4,314
CECONY \| Subsidiaries
Regulatory Liabilities [Line Items]
Regulatory liabilities – noncurrent	4,687	4,818
Regulatory liabilities – current	210	107
Total Regulatory Liabilities	4,897	4,925
Regulatory assets	4,757	4,314
CECONY \| Future income tax \| Subsidiaries
Regulatory Liabilities [Line Items]
Regulatory liabilities – noncurrent	1,339	1,404
CECONY \| Allowance for cost of removal less salvage \| Subsidiaries
Regulatory Liabilities [Line Items]
Regulatory liabilities – noncurrent	1,274	1,266
CECONY \| Unrecognized pension and other postretirement costs \| Subsidiaries
Regulatory Liabilities [Line Items]
Regulatory liabilities – noncurrent	750	867
CECONY \| Pension and other postretirement benefit deferrals \| Subsidiaries
Regulatory Liabilities [Line Items]
Regulatory liabilities – noncurrent	263	233
CECONY \| Net unbilled revenue deferrals \| Subsidiaries
Regulatory Liabilities [Line Items]
Regulatory liabilities – noncurrent	288	278
CECONY \| Late payment charge deferral \| Subsidiaries
Regulatory Liabilities [Line Items]
Regulatory liabilities – noncurrent	198	161
CECONY \| System benefit charge carrying charge \| Subsidiaries
Regulatory Liabilities [Line Items]
Regulatory liabilities – noncurrent	93	88
CECONY \| Deferred derivative gains - long term \| Subsidiaries
Regulatory Liabilities [Line Items]
Regulatory liabilities – noncurrent	47	49
CECONY \| Net proceeds from sale of property \| Subsidiaries
Regulatory Liabilities [Line Items]
Regulatory liabilities – noncurrent	41	47
CECONY \| Settlement of prudence proceeding \| Subsidiaries
Regulatory Liabilities [Line Items]
Regulatory liabilities – noncurrent	11	11
CECONY \| Other \| Subsidiaries
Regulatory Liabilities [Line Items]
Regulatory liabilities – noncurrent	383	414
CECONY \| Deferred derivative gains - short term \| Subsidiaries
Regulatory Liabilities [Line Items]
Regulatory liabilities – current	110	71
CECONY \| Refundable energy costs \| Subsidiaries
Regulatory Liabilities [Line Items]
Regulatory liabilities – current	100	36
CECONY \| Revenue decoupling mechanism \| Subsidiaries
Regulatory Liabilities [Line Items]
Regulatory liabilities – current	$ 0	$ 0

CONSOLIDATED BALANCE SHEET (UNAUDITED) - CECONY (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Accounts receivable - customers, allowance for uncollectible accounts	$ 394	$ 360
Other receivables, allowance for uncollectible accounts	17	13
Non-utility property, accumulated depreciation	24	24
CECONY
Accounts receivable - customers, allowance for uncollectible accounts	383	353
Other receivables, allowance for uncollectible accounts	12	9
Non-utility property, accumulated depreciation	$ 25	$ 25

Environmental Matters - Accrued Liability (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Site Contingency [Line Items]
Regulatory assets	$ 5,260	$ 4,888
Asbestos Suits
Site Contingency [Line Items]
Accrued liability	8	8
Regulatory assets	8	8
Workers’ Compensation
Site Contingency [Line Items]
Accrued liability	57	56
Regulatory assets	15	17
CECONY \| Subsidiaries
Site Contingency [Line Items]
Regulatory assets	4,948	4,568
CECONY \| Asbestos Suits \| Subsidiaries
Site Contingency [Line Items]
Accrued liability	7	7
Regulatory assets	7	7
CECONY \| Workers’ Compensation \| Subsidiaries
Site Contingency [Line Items]
Accrued liability	55	54
Regulatory assets	$ 15	$ 17

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References + Details

Pension Benefits - Additional Information (Details) - Pension Benefits $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Estimated future employer contributions	$ 25
Contributions made by employer	5
CECONY \| Subsidiaries
Defined Benefit Plan Disclosure [Line Items]
Estimated future employer contributions	22
Contributions made by employer	$ 4

Environmental Matters - Accrued Liabilities and Regulatory Assets (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Site Contingency [Line Items]
Accrued liabilities	$ 1,112	$ 1,118
Regulatory assets	5,260	4,888
Manufactured gas plant sites
Site Contingency [Line Items]
Accrued liabilities	1,013	1,016
Other Superfund Sites
Site Contingency [Line Items]
Accrued liabilities	99	102
Superfund Sites
Site Contingency [Line Items]
Accrued liabilities	1,112	1,118
Regulatory assets		1,105
CECONY
Site Contingency [Line Items]
Accrued liabilities	1,020	1,026
CECONY \| Subsidiaries
Site Contingency [Line Items]
Regulatory assets	4,948	4,568
CECONY \| Manufactured gas plant sites \| Subsidiaries
Site Contingency [Line Items]
Accrued liabilities	922	924
CECONY \| Other Superfund Sites \| Subsidiaries
Site Contingency [Line Items]
Accrued liabilities	98	102
CECONY \| Superfund Sites \| Subsidiaries
Site Contingency [Line Items]
Accrued liabilities	$ 1,020	1,026
Regulatory assets		$ 1,022

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References + Details

Other Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2024

Retirement Benefits [Abstract]

Total Periodic Benefit Costs

The components of the Companies’ total periodic benefit credit for the three months ended March 31, 2024 and 2023 were as follows:


	For the Three Months Ended March 31,
	Con Edison		CECONY
(Millions of Dollars)	2024	2023	2024	2023
Service cost – including administrative expenses	$43	$41	$40	$38
Interest cost on projected benefit obligation	159	162	150	153
Expected return on plan assets	(282)	(279)	(269)	(265)
Recognition of net actuarial gain	(4)	(58)	(4)	(55)
Recognition of prior service credit	(4)	(4)	(5)	(5)
TOTAL PERIODIC BENEFIT CREDIT	$(88)	$(138)	$(88)	$(134)
Cost capitalized	(22)	(21)	(22)	(20)
Reconciliation to rate level	18	73	16	68
Total credit recognized	$(92)	$(86)	$(94)	$(86)

The components of the Companies’ total periodic postretirement benefit credit for the three months ended March 31, 2024 and 2023 were as follows:


	For the Three Months Ended March 31,
	Con Edison		CECONY
(Millions of Dollars)	2024	2023	2024	2023
Service cost - including administrative expenses	$3	$4	$3	$3
Interest cost on projected other postretirement benefit obligation	12	14	10	12
Expected return on plan assets	(17)	(18)	(14)	(14)
Recognition of net actuarial gain	(5)	(4)	(3)	(2)
TOTAL PERIODIC OTHER POSTRETIREMENT CREDIT	$(7)	$(4)	$(4)	$(1)
Cost capitalized	(2)	(2)	(1)	(1)
Reconciliation to rate level	4	1	2	—
Total credit recognized	$(5)	$(5)	$(3)	$(2)

Assets and Liabilities Held-for-Sale - Schedule of Carrying Amounts (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
CURRENT ASSETS
TOTAL CURRENT ASSETS	$ 164	$ 163
Non-utility property, net accumulated depreciation	12	13
CURRENT LIABILITIES
TOTAL CURRENT LIABILITIES	77	76
Disposal Group, Held-for-sale, Not Discontinued Operations \| Clean Energy Businesses
CURRENT ASSETS
Cash and temporary cash investments		1
Accrued unbilled revenue	1
Restricted cash	5
Prepayments		$ 1
Other current assets	2
TOTAL CURRENT ASSETS	10
Non-utility property, net accumulated depreciation	76
NET PLANT	76
OTHER NONCURRENT ASSETS
Intangible assets less accumulated amortization	71
Operating lease right-of-use asset	7
TOTAL OTHER NONCURRENT ASSETS	78
TOTAL ASSETS	164
CURRENT LIABILITIES
Long-term debt due within one year	2
Operating lease liabilities	2
Other current liabilities	6
TOTAL CURRENT LIABILITIES	10
NONCURRENT LIABILITIES
Asset retirement obligations	3
Operating lease liabilities	5
TOTAL NONCURRENT LIABILITIES	8
LONG-TERM DEBT	59
TOTAL LIABILITIES	$ 77

Dispositions

3 Months Ended

Mar. 31, 2024

Discontinued Operations and Disposal Groups [Abstract]

Dispositions


						For the Three Months Ended March 31,
(Millions of Dollars)						2023
Pre-tax operating income						$25
Pre-tax operating income, excluding non-controlling interest						$21

Assets and Liabilities Held-for-Sale


(Millions of Dollars)			March 31, 2024
ASSETS
CURRENT ASSETS
Cash and temporary cash investments			$1


Accrued unbilled revenue			1

Restricted cash			5

Prepayments			1
Other current assets			2
TOTAL CURRENT ASSETS			10

NON-UTILITY PLANT
Non-utility property, net accumulated depreciation			76

NET PLANT			76
OTHER NONCURRENT ASSETS

Intangible assets less accumulated amortization			71
Operating lease right-of-use asset			7



TOTAL OTHER NONCURRENT ASSETS			78
TOTAL ASSETS			$164


(Millions of Dollars)			March 31, 2024
LIABILITIES
CURRENT LIABILITIES
Long-term debt due within one year			$2




Operating lease liabilities			2

Other current liabilities			6
TOTAL CURRENT LIABILITIES			10
NONCURRENT LIABILITIES
Asset retirement obligations			3

Operating lease liabilities			5

TOTAL NONCURRENT LIABILITIES			8
LONG-TERM DEBT			59
TOTAL LIABILITIES			$77

Leases - Lease Cost and Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 17	$ 20
Operating lease cash flows	5	7
CECONY \| Subsidiaries
Lessee, Lease, Description [Line Items]
Operating lease cost	16	17
Operating lease cash flows	$ 4	$ 4

CONSOLIDATED STATEMENT OF EQUITY (UNAUDITED) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Stockholders' Equity [Abstract]
Common stock dividends per share (dollars per share)	$ 0.83	$ 0.81

CONSOLIDATED STATEMENT OF CASH FLOWS (UNAUDITED) - CECONY - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
OPERATING ACTIVITIES
Net income	$ 720	$ 1,433
PRINCIPAL NON-CASH CHARGES/(CREDITS) TO INCOME
Depreciation and amortization	539	499
Deferred income taxes	188	(81)
Rate case amortization and accruals	49	22
Other non-cash items, net	(49)	(86)
CHANGES IN ASSETS AND LIABILITIES
Accounts receivable – customers	(215)	219
Allowance for uncollectible accounts – customers	34	(78)
Materials and supplies, including fuel oil and gas in storage	27	76
Revenue decoupling mechanism receivable	(78)	25
Other receivables and other current assets	98	(13)
Unbilled revenue and net unbilled revenue deferrals	(26)	48
Prepayments	554	564
Accounts payable	(178)	(543)
Pensions and retiree benefits obligations, net	(86)	(43)
Pensions and retiree benefits contributions	(4)	(5)
Superfund and environmental remediation costs	(6)	(3)
Accrued taxes	(13)	252
Accrued interest	128	97
Deferred charges, noncurrent assets, leases, net and other regulatory assets	30	(321)
Deferred credits, noncurrent liabilities and other regulatory liabilities	86	(28)
Other current liabilities	(147)	26
NET CASH FLOWS FROM OPERATING ACTIVITIES	573	92
INVESTING ACTIVITIES
Utility construction expenditures	(1,237)	(1,050)
Cost of removal less salvage	(107)	(94)
NET CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES	(1,344)	2,618
FINANCING ACTIVITIES
Net (payment)/issuance of short-term debt	11	(2,629)
Issuance of long-term debt	0	500
Debt issuance costs	(1)	(4)
NET CASH FLOWS USED IN FINANCING ACTIVITIES	(249)	(3,466)
CASH AND TEMPORARY CASH INVESTMENTS
NET CHANGE FOR THE PERIOD	(1,020)	(756)
BALANCE AT BEGINNING OF PERIOD	1,195	1,530
BALANCE AT END OF PERIOD	175	774
Cash paid during the period for:
Interest, net of capitalized interest	135	156
Income taxes	3	10
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION
Construction expenditures in accounts payable	441	444
Software Licenses
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION
Capital expenditures incurred but unpaid as of end of period	0	2
Equipment
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION
Capital expenditures incurred but unpaid as of end of period	11	17
CECONY
OPERATING ACTIVITIES
Net income	694	604
PRINCIPAL NON-CASH CHARGES/(CREDITS) TO INCOME
Depreciation and amortization	510	473
Deferred income taxes	181	296
Rate case amortization and accruals	45	17
Other non-cash items, net	(28)	(79)
CHANGES IN ASSETS AND LIABILITIES
Accounts receivable – customers	(210)	238
Allowance for uncollectible accounts – customers	30	(78)
Materials and supplies, including fuel oil and gas in storage	22	48
Revenue decoupling mechanism receivable	(85)	27
Other receivables and other current assets	76	(276)
Unbilled revenue and net unbilled revenue deferrals	(23)	77
Accounts receivable from affiliated companies	4	(53)
Prepayments	546	574
Accounts payable	(176)	(368)
Accounts payable from affiliated companies	4	3
Pensions and retiree benefits obligations, net	(94)	(44)
Pensions and retiree benefits contributions	(4)	(4)
Superfund and environmental remediation costs	(6)	(4)
Accrued interest	124	125
Deferred charges, noncurrent assets, leases, net and other regulatory assets	61	(311)
Deferred credits, noncurrent liabilities and other regulatory liabilities	83	(2)
Other current liabilities	(131)	65
NET CASH FLOWS FROM OPERATING ACTIVITIES	522	45
INVESTING ACTIVITIES
Utility construction expenditures	(1,160)	(985)
Cost of removal less salvage	(106)	(92)
NET CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES	(1,266)	(1,077)
FINANCING ACTIVITIES
Net (payment)/issuance of short-term debt	(46)	(1,895)
Issuance of long-term debt	0	500
Debt issuance costs	(1)	(4)
Capital contribution by Con Edison	25	1,675
Dividend to Con Edison	(268)	(264)
NET CASH FLOWS USED IN FINANCING ACTIVITIES	(290)	12
CASH AND TEMPORARY CASH INVESTMENTS
NET CHANGE FOR THE PERIOD	(1,034)	(1,020)
BALANCE AT BEGINNING OF PERIOD	1,138	1,056
BALANCE AT END OF PERIOD	104	36
Cash paid during the period for:
Interest, net of capitalized interest	121	95
Income taxes	0	(2)
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION
Construction expenditures in accounts payable	416	426
CECONY \| Nonrelated Party
CHANGES IN ASSETS AND LIABILITIES
Accrued taxes	(9)	(46)
CECONY \| Related Party
CHANGES IN ASSETS AND LIABILITIES
Accrued taxes	0	(89)
CECONY \| Software Licenses
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION
Capital expenditures incurred but unpaid as of end of period	0	2
CECONY \| Equipment
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION
Capital expenditures incurred but unpaid as of end of period	$ 11	$ 17

CONSOLIDATED BALANCE SHEET (UNAUDITED) (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Accounts receivable - customers, allowance for uncollectible accounts	$ 394	$ 360
Other receivables, allowance for uncollectible accounts	17	13
Non-utility property, accumulated depreciation	$ 24	$ 24

Dispositions - Narrative (Details)	3 Months Ended		12 Months Ended
Dispositions - Narrative (Details)	Mar. 31, 2024 USD ($) MWh project	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)	Mar. 01, 2023 USD ($) project	Oct. 01, 2022 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Period to obtain consent (in years)	2 years
Number of solar projects \| project	2
Clean Energy Businesses \| RWE \| Maximum
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Estimate of possible loss (up to)	$ 172,000,000
Disposal Group, Held-for-sale, Not Discontinued Operations \| Clean Energy Businesses
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration from sale of business				$ 3,993,000,000	$ 6,800,000,000
Gain on sale of subsidiary	835,000,000	$ 855,000,000	$ 865,000,000
Gain on sale of subsidiary, after tax	745,000,000	791,000,000	767,000,000
Downward price adjustment	30,000,000
Downward price adjustment, after tax	$ 22,000,000
Tax equity projects \| project	3			2
Transaction costs, before tax	$ 0	11,000,000
Transaction costs, after tax		$ 8,000,000
Depreciation and amortization, before tax			41,000,000
Depreciation and amortization, after tax			$ 28,000,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Crane Project
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Holding period (in years)	5 years
Carrying value of tax equity interest	$ 7,000,000
Electric Energy (MWh)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Notional amount \| MWh	31,374,625
Broken Bow II \| Electric Energy (MWh) \| Clean Energy Businesses
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Deferred projects \| project	1			1
Notional amount \| MWh	75

Fair Value Measurements - Schedule of Commodity Derivatives (Details)	Mar. 31, 2024 USD ($) $ / MWh $ / kW-month	Dec. 31, 2023 USD ($)
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair Value of commodity derivatives	$ 783,000,000	$ 723,000,000
CECONY \| Subsidiaries
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair Value of commodity derivatives	753,000,000	699,000,000
Level 3
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair Value of commodity derivatives	2,000,000	2,000,000
Level 3 \| CECONY \| Subsidiaries
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair Value of commodity derivatives	1,000,000	$ 1,000,000
Level 3 \| Electricity \| Forward capacity prices
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair Value of commodity derivatives	$ (1,000,000)
Level 3 \| Electricity \| Forward capacity prices \| Minimum
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Unobservable Inputs Range (dollar per unit) \| $ / kW-month	1.92
Level 3 \| Electricity \| Forward capacity prices \| Maximum
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Unobservable Inputs Range (dollar per unit) \| $ / kW-month	7.53
Level 3 \| Electricity \| Forward capacity prices \| CECONY \| Subsidiaries
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair Value of commodity derivatives	$ (1,000,000)
Level 3 \| Electricity \| Forward capacity prices \| CECONY \| Minimum \| Subsidiaries
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Unobservable Inputs Range (dollar per unit) \| $ / kW-month	1.92
Level 3 \| Electricity \| Forward capacity prices \| CECONY \| Maximum \| Subsidiaries
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Unobservable Inputs Range (dollar per unit) \| $ / kW-month	7.53
Level 3 \| Electricity \| Forward energy prices
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair Value of commodity derivatives	$ 0
Level 3 \| Electricity \| Forward energy prices \| Minimum
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Unobservable Inputs Range (dollar per unit) \| $ / MWh	37.65
Level 3 \| Electricity \| Forward energy prices \| Maximum
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Unobservable Inputs Range (dollar per unit) \| $ / MWh	88.95
Level 3 \| Transmission Congestion Contracts \| Inter-zonal forward price curves adjusted for historical zonal losses
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair Value of commodity derivatives	$ 1,000,000
Level 3 \| Transmission Congestion Contracts \| Inter-zonal forward price curves adjusted for historical zonal losses \| Minimum
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Unobservable Inputs Range (dollar per unit) \| $ / MWh	(0.10)
Level 3 \| Transmission Congestion Contracts \| Inter-zonal forward price curves adjusted for historical zonal losses \| Maximum
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Unobservable Inputs Range (dollar per unit) \| $ / MWh	2.68
Level 3 \| Transmission Congestion Contracts \| Inter-zonal forward price curves adjusted for historical zonal losses \| CECONY \| Subsidiaries
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair Value of commodity derivatives	$ 1,000,000
Level 3 \| Transmission Congestion Contracts \| Inter-zonal forward price curves adjusted for historical zonal losses \| CECONY \| Minimum \| Subsidiaries
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Unobservable Inputs Range (dollar per unit) \| $ / MWh	(0.10)
Level 3 \| Transmission Congestion Contracts \| Inter-zonal forward price curves adjusted for historical zonal losses \| CECONY \| Maximum \| Subsidiaries
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Unobservable Inputs Range (dollar per unit) \| $ / MWh	2.68
Level 3 \| Commodity
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair Value of commodity derivatives	$ 0
Level 3 \| Commodity \| CECONY \| Subsidiaries
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair Value of commodity derivatives	$ 0

Revenue Recognition

3 Months Ended

Mar. 31, 2024

Revenue from Contract with Customer [Abstract]

Revenue Recognition


	For the Three Months Ended March 31, 2024			For the Three Months Ended March 31, 2023
(Millions of Dollars)	Revenues from contracts with customers	Other revenues (a)	Total operating revenues	Revenues from contracts with customers	Other revenues (a)	Total operating revenues
CECONY
Electric	$2,439	$2	$2,441	$2,263	$93	$2,356
Gas	1,229	14	1,243	1,257	34	1,291
Steam	294	(7)	287	303	3	306
Total CECONY	$3,962	$9	$3,971	$3,823	$130	$3,953
O&R
Electric	200	(5)	195	178	4	182
Gas	116	(3)	113	138	1	139
Total O&R	$316	$(8)	$308	$316	$5	$321
Clean Energy Businesses (c)
Renewables	—	—	—	68	—	68
Energy services	—	—	—	7	—	7
Develop/Transfer Projects	—	—	—	7	—	7
Other	—	—	—	—	47	47
Total Clean Energy Businesses	$—	$—	$—	$82	$47	$129
Con Edison Transmission	1	—	1	1	—	1
Other (b)	—	—	—	—	(1)	(1)
Total Con Edison	$4,279	$1	$4,280	$4,222	$181	$4,403

(b) Other includes the parent company, Con Edison's tax equity investments, the deferred project held for sale and consolidated adjustments. See Note R.

(c) On March 1, 2023, Con Edison completed the sale of all of the stock of the Clean Energy Businesses. See Note Q and Note R.

Use of the Percentage-of-Completion Method

Sales and profits on each percentage-of-completion contract at the Clean Energy Businesses were recorded each month based on the ratio of actual cumulative costs incurred to the total estimated costs at completion of the contract, multiplied by the total estimated contract revenue, less cumulative revenues recognized in prior periods (the ‘‘cost-to-cost’’ method). The impact of revisions of contract estimates, which may have resulted from contract modifications, performance or other reasons, were recognized on a cumulative catch-up basis in the period in which the revisions were made. On March 1, 2023, Con Edison completed the sale of all of the stock of the Clean Energy Businesses. See Note Q.


	2024		2023
(Millions of Dollars)	Unbilled contract revenue (a)	Unearned revenue (b)	Unbilled contract revenue (a)		Unearned revenue (b)
Beginning balance as of January 1,	$4	$—	$80		$3
Additions (c)	—	—	2		—
Subtractions (c)	—	—	33		3	(d)
Ending balance as of March 31,	$4	$—	$49	(e)	$—

(b)Unearned revenue represents a liability for billings to customers in excess of earned revenue, which are contract liabilities as defined in Topic 606.

(d)Of the subtractions from unearned revenue, $3 million was included in the balances as of January 1, 2023.

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-9

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-10

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-15

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-12

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-12

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-12

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-12

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-12

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-13

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Topic 606
-Publisher FASB
-URI https://asc.fasb.org//606/tableOfContent

+ Details

Related Party Transactions - Additional Information (Details) MMBTU in Thousands	1 Months Ended	3 Months Ended		12 Months Ended
	Apr. 30, 2024 USD ($)	Mar. 31, 2024 USD ($) MMBTU	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Related Party Transaction [Line Items]
Net assets		$ 21,615,000,000		$ 21,158,000,000
Other income		164,000,000	$ 204,000,000
Subsequent Event
Related Party Transaction [Line Items]
Unconditional charitable contribution, accrued amount	$ 12,000,000
CECONY
Related Party Transaction [Line Items]
Net assets		19,597,000,000	18,892,000,000	19,146,000,000	$ 16,878,000,000
Income taxes due to Con Edison		110,000,000		110,000,000
Funding limit of CECONY to O&R (not to exceed)		250,000,000
CECONY \| Subsidiaries
Related Party Transaction [Line Items]
Sale of natural gas		$ 24,000,000	33,000,000
CECONY \| Related Party, Lending of Funds
Related Party Transaction [Line Items]
Lending period (not more than) (months)		12 months
CECONY \| Equity Method Investee \| Mountain Valley Pipeline LLC
Related Party Transaction [Line Items]
Contract term (years)		20 years
Generating capacity per day (in dekatherms) \| MMBTU		250
O&R
Related Party Transaction [Line Items]
Net assets		$ 1,098,000,000
Outstanding loans		0		$ 0
CET Electric \| NY Transco \| Related Party
Related Party Transaction [Line Items]
Other income		$ 1,000,000	$ 4,000,000
CET Electric \| New York Transco's New York Enery Solution Project
Related Party Transaction [Line Items]
Ownership interest (in percent)		45.70%
CET Electric \| New York Transco's Propel NY Energy Project
Related Party Transaction [Line Items]
Ownership interest (in percent)		41.70%

Current Expected Credit Losses

3 Months Ended

Mar. 31, 2024

Credit Loss [Abstract]

Current Expected Credit Losses

Allowance for Uncollectible Accounts

The Utilities’ “Account receivable – customers” balance consists of utility bills due (bills are generally due the month following billing) from customers who have energy delivered, generated, or services provided by the Utilities. The balance also reflects the Utilities’ purchase of receivables from energy service companies to support the retail choice programs.

“Other receivables” balance generally reflects costs billed by the Utilities for goods and services provided to external parties, such as accommodation work for private parties and certain governmental entities, real estate rental and pole attachments.

The Companies develop expected loss estimates using past events data and consider current conditions and future reasonable and supportable forecasts. Changes to the Utilities’ reserve balances that result in write-offs of customer accounts receivable balances above existing rate allowances are not reflected in rates during the term of the current rate plans. For the Utilities’ customer accounts receivable allowance for uncollectible accounts, past events considered include write-offs relative to customer accounts receivable; current conditions include macro-and micro-economic conditions related to trends in the local economy, bankruptcy rates and aged customer accounts receivable balances, among other factors; and forecasts about the future include assumptions related to the level of write-offs and recoveries. Generally, the Utilities write off customer accounts receivable as uncollectible 90 days after the account is turned off for non-payment, or the account is closed during the collection process.

Other receivables allowance for uncollectible accounts is calculated based on a historical average of collections relative to total other receivables, including current receivables. Current macro- and micro-economic conditions are also considered when calculating the current reserve. Probable outcomes of pending litigation, whether favorable or unfavorable to the Companies, are also included in the consideration.

Starting in 2020, the potential economic impact of the COVID-19 pandemic was also considered in forward-looking projections related to write-off and recovery rates and resulted in increases to the allowance for uncollectible accounts. The increases to the allowance for customer uncollectible accounts for Con Edison and CECONY were $34 million and $30 million, respectively, for the three months ended March 31, 2024. The decrease to the allowance for customer uncollectible accounts for Con Edison and CECONY was $78 million for the three months ended March 31, 2023, primarily from credits issued pursuant to New York State COVID-19 arrears assistance programs.

Customer accounts receivable and the associated allowance for uncollectible accounts are included in the line “Accounts receivable – customers” on the Companies’ consolidated balance sheets. Other receivables and the associated allowance for uncollectible accounts are included in “Other receivables” on the consolidated balance sheets.

The table below presents a rollforward by major portfolio segment type for the three months ended March 31, 2024 and 2023:


	For the Three Months Ended March 31,
	Con Edison				CECONY
	Accounts receivable - customers		Other receivables		Accounts receivable - customers		Other receivables
(Millions of Dollars)	2024	2023	2024	2023	2024	2023	2024	2023
Allowance for credit losses
Beginning Balance at January 1,	$360	$322	$13	$10	$353	$314	$9	$7
Recoveries	14	4	—	—	11	4	—	—
Write-offs	(66)	(48)	—	(1)	(62)	(47)	—	—
Reserve adjustments	86	(34)	4	1	81	(35)	3	1
Ending Balance March 31,	$394	$244	$17	$10	$383	$236	$12	$8

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	$ 783,000,000	$ 723,000,000
Liabilities transferred out of Level 3	4,000,000
Assets transferred out of level 3		0
CECONY
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets transferred out of level 3		0
CECONY \| Subsidiaries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	753,000,000	699,000,000
Liabilities transferred out of Level 3	4,000,000
Netting Adjustment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	(27,000,000)	(54,000,000)
Netting Adjustment \| CECONY \| Subsidiaries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	(28,000,000)	(52,000,000)
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	527,000,000	511,000,000
Level 1 \| CECONY \| Subsidiaries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	509,000,000	494,000,000
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	281,000,000	264,000,000
Level 2 \| CECONY \| Subsidiaries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	271,000,000	256,000,000
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	2,000,000	2,000,000
Level 3 \| CECONY \| Subsidiaries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	1,000,000	1,000,000
Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	135,000,000	100,000,000
Derivative liabilities:	207,000,000	314,000,000
Liabilities transferred out of Level 3		9,000,000
Commodity \| CECONY \| Subsidiaries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	128,000,000	98,000,000
Derivative liabilities:	188,000,000	287,000,000
Liabilities transferred out of Level 3		6,000,000
Commodity \| Netting Adjustment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	(27,000,000)	(54,000,000)
Derivative liabilities:	(44,000,000)	(65,000,000)
Commodity \| Netting Adjustment \| CECONY \| Subsidiaries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	(28,000,000)	(52,000,000)
Derivative liabilities:	(47,000,000)	(65,000,000)
Commodity \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	4,000,000	6,000,000
Derivative liabilities:	20,000,000	22,000,000
Commodity \| Level 1 \| CECONY \| Subsidiaries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	4,000,000	6,000,000
Derivative liabilities:	18,000,000	20,000,000
Commodity \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	156,000,000	146,000,000
Derivative liabilities:	229,000,000	347,000,000
Commodity \| Level 2 \| CECONY \| Subsidiaries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	151,000,000	143,000,000
Derivative liabilities:	216,000,000	326,000,000
Commodity \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	2,000,000	2,000,000
Derivative liabilities:	2,000,000	10,000,000
Commodity \| Level 3 \| CECONY \| Subsidiaries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	1,000,000	1,000,000
Derivative liabilities:	1,000,000	6,000,000
Mutual Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	523,000,000	505,000,000
Mutual Funds \| CECONY \| Subsidiaries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	505,000,000	488,000,000
Mutual Funds \| Netting Adjustment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	0	0
Mutual Funds \| Netting Adjustment \| CECONY \| Subsidiaries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	0	0
Mutual Funds \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	523,000,000	505,000,000
Mutual Funds \| Level 1 \| CECONY \| Subsidiaries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	505,000,000	488,000,000
Mutual Funds \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	0	0
Mutual Funds \| Level 2 \| CECONY \| Subsidiaries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	0	0
Mutual Funds \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	0	0
Mutual Funds \| Level 3 \| CECONY \| Subsidiaries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	0	0
Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	125,000,000	118,000,000
Other \| CECONY \| Subsidiaries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	120,000,000	113,000,000
Other \| Netting Adjustment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	0	0
Other \| Netting Adjustment \| CECONY \| Subsidiaries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	0	0
Other \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	0	0
Other \| Level 1 \| CECONY \| Subsidiaries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	0	0
Other \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	125,000,000	118,000,000
Other \| Level 2 \| CECONY \| Subsidiaries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	120,000,000	113,000,000
Other \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	0	0
Other \| Level 3 \| CECONY \| Subsidiaries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	$ 0	$ 0

Financial Information by Business Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Total revenues	$ 4,280	$ 4,403
Depreciation and amortization	539	499
Operating income/(loss)	1,011	1,739
CECONY
Segment Reporting Information [Line Items]
Total revenues	3,971	3,953
Depreciation and amortization	510	473
Operating income/(loss)	989	809
CECONY \| Subsidiaries
Segment Reporting Information [Line Items]
Depreciation and amortization	510	473
Operating income/(loss)	989	809
CECONY \| Electric \| Subsidiaries
Segment Reporting Information [Line Items]
Depreciation and amortization	370	343
Operating income/(loss)	240	194
CECONY \| Gas \| Subsidiaries
Segment Reporting Information [Line Items]
Depreciation and amortization	114	105
Operating income/(loss)	615	559
CECONY \| Steam \| Subsidiaries
Segment Reporting Information [Line Items]
Depreciation and amortization	26	25
Operating income/(loss)	134	56
O&R \| Subsidiaries
Segment Reporting Information [Line Items]
Depreciation and amortization	29	25
Operating income/(loss)	56	41
O&R \| Electric \| Subsidiaries
Segment Reporting Information [Line Items]
Depreciation and amortization	20	18
Operating income/(loss)	14	1
O&R \| Gas \| Subsidiaries
Segment Reporting Information [Line Items]
Depreciation and amortization	9	7
Operating income/(loss)	42	40
Operating segment
Segment Reporting Information [Line Items]
Total revenues	4,280	4,403
Operating segment \| Clean Energy Businesses
Segment Reporting Information [Line Items]
Total revenues	0	129
Depreciation and amortization	0	0
Operating income/(loss)	0	36
Operating segment \| Con Edison Transmission
Segment Reporting Information [Line Items]
Total revenues	1	1
Depreciation and amortization	0	0
Operating income/(loss)	(3)	(2)
Operating segment \| CECONY \| Subsidiaries
Segment Reporting Information [Line Items]
Total revenues	3,971	3,953
Operating segment \| CECONY \| Electric \| Subsidiaries
Segment Reporting Information [Line Items]
Total revenues	2,441	2,356
Operating segment \| CECONY \| Gas \| Subsidiaries
Segment Reporting Information [Line Items]
Total revenues	1,243	1,291
Operating segment \| CECONY \| Steam \| Subsidiaries
Segment Reporting Information [Line Items]
Total revenues	287	306
Operating segment \| O&R \| Subsidiaries
Segment Reporting Information [Line Items]
Total revenues	308	321
Operating segment \| O&R \| Electric \| Subsidiaries
Segment Reporting Information [Line Items]
Total revenues	195	182
Operating segment \| O&R \| Gas \| Subsidiaries
Segment Reporting Information [Line Items]
Total revenues	113	139
Inter-segment \| CECONY \| Subsidiaries
Segment Reporting Information [Line Items]
Total revenues	(25)	(25)
Inter-segment \| CECONY \| Electric \| Subsidiaries
Segment Reporting Information [Line Items]
Total revenues	4	5
Inter-segment \| CECONY \| Gas \| Subsidiaries
Segment Reporting Information [Line Items]
Total revenues	2	2
Inter-segment \| CECONY \| Steam \| Subsidiaries
Segment Reporting Information [Line Items]
Total revenues	19	18
Other
Segment Reporting Information [Line Items]
Total revenues	0	(1)
Depreciation and amortization	0	1
Operating income/(loss)	$ (31)	$ 855

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Mar. 31, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Regulatory Matters (Tables)

3 Months Ended

Mar. 31, 2024

Regulated Operations [Abstract]

Schedule of Regulatory Assets

Regulatory assets and liabilities at March 31, 2024 and December 31, 2023 were comprised of the following items:


	Con Edison		CECONY
(Millions of Dollars)	2024	2023	2024	2023
Regulatory assets
Environmental remediation costs	$1,098	$1,105	$1,015	$1,022
System peak reduction and energy efficiency programs	1,046	1,057	1,024	1,038
COVID - 19 pandemic deferrals	827	789	816	782
Revenue taxes	494	476	473	455
Legacy meters (a)	436	17	420	—
Deferred storm costs	190	206	100	115
Property tax reconciliation	146	169	146	169
Deferred derivative losses - long term	133	163	121	148
Electric vehicle make ready	85	73	79	68
Pension and other postretirement benefits deferrals	73	48	70	39
MTA power reliability deferral	54	61	54	61
Gas service line deferred costs	38	43	38	43
Unrecognized pension and other postretirement costs	4	—	3	—
Other	426	400	398	374
Regulatory assets – noncurrent	5,050	4,607	4,757	4,314
Deferred derivative losses - short term	202	269	191	253
Recoverable energy costs	8	12	—	1
Regulatory assets – current	210	281	191	254
Total Regulatory Assets	$5,260	$4,888	$4,948	$4,568
Regulatory liabilities
Future income tax*	1,469	1,535	1,339	1,404
Allowance for cost of removal less salvage	1,468	1,456	1,274	1,266
Unrecognized pension and other postretirement costs	798	943	750	867
Pension and other postretirement benefit deferrals	315	284	263	233
Net unbilled revenue deferrals	288	278	288	278
Late payment charge deferral	205	167	198	161
System benefit charge carrying charge	98	92	93	88
Deferred derivative gains - long term	48	49	47	49
Net proceeds from sale of property	42	48	41	47
Settlement of prudence proceeding	11	11	11	11
Other	432	465	383	414
Regulatory liabilities – noncurrent	5,174	5,328	4,687	4,818
Deferred derivative gains - short term	117	74	110	71
Refundable energy costs	140	71	100	36
Revenue decoupling mechanism	1	—	—	—
Regulatory liabilities – current	258	145	210	107
Total Regulatory Liabilities	$5,432	$5,473	$4,897	$4,925

* See "Other Regulatory Matters," above.

(a) Pursuant to their rate plans, CECONY and O&R are recovering the costs of legacy meters over a 15-year period beginning January 1, 2024 and a 12-year period beginning January 1, 2022, respectively.

Schedule of Regulatory Liabilities

Regulatory assets and liabilities at March 31, 2024 and December 31, 2023 were comprised of the following items:


	Con Edison		CECONY
(Millions of Dollars)	2024	2023	2024	2023
Regulatory assets
Environmental remediation costs	$1,098	$1,105	$1,015	$1,022
System peak reduction and energy efficiency programs	1,046	1,057	1,024	1,038
COVID - 19 pandemic deferrals	827	789	816	782
Revenue taxes	494	476	473	455
Legacy meters (a)	436	17	420	—
Deferred storm costs	190	206	100	115
Property tax reconciliation	146	169	146	169
Deferred derivative losses - long term	133	163	121	148
Electric vehicle make ready	85	73	79	68
Pension and other postretirement benefits deferrals	73	48	70	39
MTA power reliability deferral	54	61	54	61
Gas service line deferred costs	38	43	38	43
Unrecognized pension and other postretirement costs	4	—	3	—
Other	426	400	398	374
Regulatory assets – noncurrent	5,050	4,607	4,757	4,314
Deferred derivative losses - short term	202	269	191	253
Recoverable energy costs	8	12	—	1
Regulatory assets – current	210	281	191	254
Total Regulatory Assets	$5,260	$4,888	$4,948	$4,568
Regulatory liabilities
Future income tax*	1,469	1,535	1,339	1,404
Allowance for cost of removal less salvage	1,468	1,456	1,274	1,266
Unrecognized pension and other postretirement costs	798	943	750	867
Pension and other postretirement benefit deferrals	315	284	263	233
Net unbilled revenue deferrals	288	278	288	278
Late payment charge deferral	205	167	198	161
System benefit charge carrying charge	98	92	93	88
Deferred derivative gains - long term	48	49	47	49
Net proceeds from sale of property	42	48	41	47
Settlement of prudence proceeding	11	11	11	11
Other	432	465	383	414
Regulatory liabilities – noncurrent	5,174	5,328	4,687	4,818
Deferred derivative gains - short term	117	74	110	71
Refundable energy costs	140	71	100	36
Revenue decoupling mechanism	1	—	—	—
Regulatory liabilities – current	258	145	210	107
Total Regulatory Liabilities	$5,432	$5,473	$4,897	$4,925

* See "Other Regulatory Matters," above.

Schedule of Regulatory Assets Not Earning Return

Regulatory Assets Not Earning a Return*


	Con Edison		CECONY
(Millions of Dollars)	2024	2023	2024	2023
Environmental remediation costs	$1,098	$1,105	$1,015	$1,022
Revenue taxes	509	490	488	470
COVID-19 deferral for uncollectible accounts receivable	324	291	318	288
Deferred derivative losses - current	202	269	191	253
Deferred derivative losses - long term	133	163	121	148
Unrecognized pension and other postretirement costs	4	—	3	—
Other	41	29	40	28
Total	$2,311	$2,347	$2,176	$2,209

*This table presents regulatory assets not earning a return for which no cash outlay has been made.

CONSOLIDATED BALANCE SHEET (UNAUDITED) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
CURRENT ASSETS
Cash and temporary cash investments	$ 169	$ 1,189
Accounts receivable – customers, net allowance for uncollectible accounts	2,618	2,418
Other receivables, net allowance for uncollectible accounts	299	444
Accrued unbilled revenue	771	722
Fuel oil, gas in storage, materials and supplies, at average cost	442	469
Prepayments	1,023	470
Regulatory assets	210	281
Restricted cash	0	1
Revenue decoupling mechanism receivable	280	203
Fair value of derivative assets	88	52
Assets held for sale	164	163
Other current assets	102	125
TOTAL CURRENT ASSETS	6,166	6,537
INVESTMENTS	1,041	999
UTILITY PLANT, AT ORIGINAL COST
General	4,755	4,835
TOTAL	62,136	61,309
Less: Accumulated depreciation	14,776	14,157
Net	47,360	47,152
Construction work in progress	2,481	2,442
NET UTILITY PLANT	49,841	49,594
NON-UTILITY PLANT
Non-utility property, net accumulated depreciation	12	13
Construction work in progress	1	1
NET PLANT	49,854	49,608
OTHER NONCURRENT ASSETS
Goodwill	408	408
Regulatory assets	5,050	4,607
Pension and retiree benefits	3,267	3,275
Operating lease right-of-use asset	521	533
Fair value of derivative assets	48	48
Other deferred charges and noncurrent assets	325	316
TOTAL OTHER NONCURRENT ASSETS	9,619	9,187
TOTAL ASSETS	66,680	66,331
CURRENT LIABILITIES
Long-term debt due within one year	250	250
Notes payable	2,299	2,288
Accounts payable	1,439	1,775
Customer deposits	411	396
Accrued taxes	63	73
Accrued interest	298	170
Accrued wages	127	125
Fair value of derivative liabilities	113	193
Regulatory liabilities	258	145
System benefit charge	406	444
Operating lease liabilities	116	116
Liabilities held for sale	77	76
Other current liabilities	387	411
TOTAL CURRENT LIABILITIES	6,244	6,462
NONCURRENT LIABILITIES
Provision for injuries and damages	183	188
Pensions and retiree benefits	633	592
Superfund and other environmental costs	1,112	1,118
Asset retirement obligations	527	522
Fair value of derivative liabilities	94	121
Deferred income taxes and unamortized investment tax credits	8,338	8,069
Operating lease liabilities	430	429
Regulatory liabilities	5,174	5,328
Other deferred credits and noncurrent liabilities	401	417
TOTAL NONCURRENT LIABILITIES	16,892	16,784
LONG-TERM DEBT	21,929	21,927
COMMITMENTS, CONTINGENCIES, AND GUARANTEES (Note B, Note G, and Note H)
Common shareholders’ equity	21,615	21,158
TOTAL LIABILITIES AND EQUITY	66,680	66,331
Electric
UTILITY PLANT, AT ORIGINAL COST
Utility plant, at original cost	39,771	39,071
Gas
UTILITY PLANT, AT ORIGINAL COST
Utility plant, at original cost	14,500	14,318
Steam
UTILITY PLANT, AT ORIGINAL COST
Utility plant, at original cost	$ 3,110	$ 3,085

Related Party Transactions

3 Months Ended

Mar. 31, 2024

Related Party Transactions

The NYSPSC generally requires that the Utilities and Con Edison’s other subsidiaries be operated as separate entities. The Utilities and the other subsidiaries are required to have separate operating employees and operating officers of the Utilities may not be operating officers of the other subsidiaries. The Utilities may provide administrative and other services to, and receive such services from, Con Edison and its other subsidiaries only pursuant to cost allocation procedures approved by the NYSPSC. Transfers of assets between the Utilities and Con Edison or its other subsidiaries may be made only as approved by the NYSPSC. The debt of the Utilities is to be raised directly by the Utilities and not derived from Con Edison. Without the prior permission of the NYSPSC, the Utilities may not make loans to, guarantee the obligations of, or pledge assets as security for the indebtedness of Con Edison or its other subsidiaries. The NYSPSC limits the dividends that the Utilities may pay Con Edison. As a result, substantially all of the net assets of CECONY and O&R ($19,597 million and $1,098 million, respectively), at March 31, 2024, are considered restricted net assets. The NYSPSC may impose additional measures to separate, or “ring fence,” the Utilities from Con Edison and its other subsidiaries.


	For the Three Months Ended March 31,
	CECONY (a)
(Millions of Dollars)	2024	2023
Cost of services provided	$32	$33
Cost of services received	$20	$19

(a) On March 1, 2023, Con Edison completed the sale of all of the stock of the Clean Energy Businesses. See Note Q and Note R.

In addition, CECONY and O&R have joint gas supply arrangements in connection with which CECONY sold to O&R, $24 million and $33 million of natural gas for the three months ended March 31, 2024 and 2023, respectively. These amounts are net of the effect of related hedging transactions.

At March 31, 2024 and December 31, 2023, CECONY's net receivable from Con Edison for income taxes was $110 million.

The Utilities perform work and incur expenses on behalf of New York Transco, a company in which Con Edison Transmission has a 45.7 percent interest in New York Transco's New York Energy Solution project and a 41.7 percent interest in New York Transco's share of the Propel NY Energy project that is jointly owned with the New York Power Authority. The Utilities bill New York Transco for such work and expenses in accordance with established policies. For the three months ended March 31, 2024 and 2023, the amounts billed by the Utilities to New York Transco were $1 million and $4 million, respectively.

CECONY has a 20-year transportation contract with Mountain Valley Pipeline, LLC (MVP) for 250,000 dekatherms per day of capacity. Con Edison Transmission has an interest in MVP. See "Investment in Mountain Valley Pipeline, LLC (MVP)" in Note A. In October 2017, the Environmental Defense Fund and the Natural Resource Defense Council requested the NYSPSC to prohibit CECONY from recovering costs under its contract with MVP unless CECONY can demonstrate that the contract is in the public interest. CECONY advised the NYSPSC that it would respond to the request if the NYSPSC opened a proceeding to consider this request. CECONY has not incurred costs under the contract.

FERC has authorized CECONY to lend funds to O&R for a period of not more than 12 months, in an amount not to exceed $250 million, at prevailing market rates. At March 31, 2024 and December 31, 2023 there were no outstanding loans to O&R.

The Consolidated Edison Foundation, Inc. (the Foundation), established in December 2023, is a non-consolidated not-for-profit corporation funded by Con Edison that plans to make contributions to selected charitable organizations. In April 2024, Con Edison made a $12 million contribution to the Foundation that Con Edison accrued as an expense in “Other Income and Deductions” within its consolidated income statement for the year ended December 31, 2023.

- Definition

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
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-Paragraph 1
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483326/850-10-50-1

+ Details

Regulatory Matters

3 Months Ended

Mar. 31, 2024

Regulated Operations [Abstract]

Regulatory Matters

Rate Plans

O&R New York – Electric

In April 2024, O&R filed an update to its January 2024 request to the NYSPSC for an electric rate increase effective January 1, 2025. The company decreased its requested January 2024 rate increase by $7.5 million to $10.7 million.

For purposes of illustration, the filing calculated rate increases of $34.8 million and $55 million effective January 2026 and 2027, respectively, based upon the proposed return on common equity of 10.25 percent and a common equity ratio of 50 percent.

O&R New York –Gas

In April 2024, O&R filed an update to its January 2024 request to the NYSPSC for a gas rate increase effective January 1, 2025. The company increased its requested January 2024 rate increase by $3.1 million to $17.5 million. For purposes of illustration, the filing calculated rate increases of $22.8 million and $19.2 million effective January 2026 and 2027, respectively, based upon the proposed return on common equity of 10.25 percent and a common equity ratio of 50 percent.

Bill Relief Program

In March 2024, CECONY and O&R received $91 million and $9 million, respectively, pursuant to a New York State bill relief program funded by the state that provided a one-time bill credit for electric and gas customers. The program was established to partially offset the costs all customers pay to fund utility energy affordability programs.

Other Regulatory Matters

In January 2023, CECONY initiated a review of welds on certain gas and steam mains following the company’s discovery of a leak from a gas main weld in Queens, New York. During the course of its review thus far, CECONY discovered a limited number of other non-conforming gas and steam main welds. New York regulations require utilities to perform and record weld films for certain gas and steam main welds. Upon reviewing these films, CECONY determined that in some instances third-party contractors engaged in misconduct by substituting duplicate weld films for different welds, while another third-party contractor had created poor quality weld films. CECONY voluntarily disclosed its initial review and findings to the NYSDPS which, in turn, initiated its own investigation. CECONY also reported the contractors’ misconduct to law enforcement. Given the nature of the non-conforming welds identified, CECONY does not anticipate significant impact to the operation of its gas and steam mains. CECONY continues to investigate this matter, is remediating and monitoring the known non-conforming welds and is cooperating with the NYSDPS on its investigation of this matter. CECONY is unable to estimate the amount or range of its possible loss, if any, related to this matter.

In October 2023, CECONY and O&R replaced their separate existing customer billing and information systems with a single new customer billing and information system. In April 2023, CECONY filed a petition with the NYSPSC for permission to capitalize incremental costs for the new system above a $421 million limit on capital investments included in CECONY’s 2020 – 2022 electric and gas rate plans. At March 31, 2024, CECONY's incurred costs for the new system were $509 million ($88 million above the $421 million limit in the rate plans). CECONY cannot predict the NYSPSC’s response to its April 2023 petition and the NYSPSC may prohibit CECONY from capitalizing some or all of the costs above the $421 million limit. O&R's electric and gas rate plans do not include a limit on capitalization of new system costs.

In January 2018, the NYSPSC issued an order initiating a focused operations audit of the Utilities’ financial accounting for income taxes. The audit is investigating the Utilities’ inadvertent understatement of a portion, the amount of which may be material, of their calculation of total federal income tax expense for ratemaking purposes. The understatement was related to the calculation of plant retirement-related cost of removal. As a result of such understatement, the Utilities accumulated significant income tax regulatory assets that were not reflected in O&R’s rate plans prior to 2014, CECONY’s electric and gas rate plans prior to 2015 and 2016, respectively, and CECONY's steam plans prior to November 2023. This understatement of historical income tax expense materially reduced the amount of revenue collected from the Utilities' customers in the past. As part of the audit, the Utilities plan to pursue a private letter ruling from the Internal Revenue Service (IRS) that is expected to confirm, among other things, that in order to comply with IRS normalization rules, such understatement may not be corrected through a write-down of a portion of the regulatory asset and must be corrected through an increase in future years’ revenue requirements. The regulatory asset ($1,094 million and $17 million for CECONY and O&R, respectively, as of March 31, 2024 and $1,113 million and $18 million for CECONY and O&R, respectively, as of December 31, 2023 and which is not earning a return) is netted against the future income tax regulatory liability on the Companies’ consolidated balance sheet. The Utilities are unable to estimate the amount or range of their possible loss, if any, related to this matter. At March 31, 2024, the Utilities had not accrued a liability related to this matter.

Regulatory Assets and Liabilities

Regulatory assets and liabilities at March 31, 2024 and December 31, 2023 were comprised of the following items:


	Con Edison		CECONY
(Millions of Dollars)	2024	2023	2024	2023
Regulatory assets
Environmental remediation costs	$1,098	$1,105	$1,015	$1,022
System peak reduction and energy efficiency programs	1,046	1,057	1,024	1,038
COVID - 19 pandemic deferrals	827	789	816	782
Revenue taxes	494	476	473	455
Legacy meters (a)	436	17	420	—
Deferred storm costs	190	206	100	115
Property tax reconciliation	146	169	146	169
Deferred derivative losses - long term	133	163	121	148
Electric vehicle make ready	85	73	79	68
Pension and other postretirement benefits deferrals	73	48	70	39
MTA power reliability deferral	54	61	54	61
Gas service line deferred costs	38	43	38	43
Unrecognized pension and other postretirement costs	4	—	3	—
Other	426	400	398	374
Regulatory assets – noncurrent	5,050	4,607	4,757	4,314
Deferred derivative losses - short term	202	269	191	253
Recoverable energy costs	8	12	—	1
Regulatory assets – current	210	281	191	254
Total Regulatory Assets	$5,260	$4,888	$4,948	$4,568
Regulatory liabilities
Future income tax*	1,469	1,535	1,339	1,404
Allowance for cost of removal less salvage	1,468	1,456	1,274	1,266
Unrecognized pension and other postretirement costs	798	943	750	867
Pension and other postretirement benefit deferrals	315	284	263	233
Net unbilled revenue deferrals	288	278	288	278
Late payment charge deferral	205	167	198	161
System benefit charge carrying charge	98	92	93	88
Deferred derivative gains - long term	48	49	47	49
Net proceeds from sale of property	42	48	41	47
Settlement of prudence proceeding	11	11	11	11
Other	432	465	383	414
Regulatory liabilities – noncurrent	5,174	5,328	4,687	4,818
Deferred derivative gains - short term	117	74	110	71
Refundable energy costs	140	71	100	36
Revenue decoupling mechanism	1	—	—	—
Regulatory liabilities – current	258	145	210	107
Total Regulatory Liabilities	$5,432	$5,473	$4,897	$4,925

* See "Other Regulatory Matters," above.

In general, the Utilities receive or are being credited with a return at the Other Customer-Provided Capital rate for regulatory assets that have not been included in rate base, and receive or are being credited with a return at the pre-tax weighted average cost of capital once the asset is included in rate base. Similarly, the Utilities pay to or credit customers with a return at the Other Customer-Provided Capital rate for regulatory liabilities that have not been included in rate base, and pay to or credit customers with a return at the pre-tax weighted average cost of capital once the liability is included in rate base. The Other Customer-Provided Capital rate for the three months ended March 31, 2024 and 2023 was 5.95 percent and 5.20 percent, respectively.

In general, the Utilities are receiving or being credited with a return on their regulatory assets for which a cash outflow has been made ($2,949 million and $2,541 million for Con Edison, and $2,772 million and $2,359 million for CECONY at March 31, 2024 and December 31, 2023, respectively). Regulatory assets of RECO for which a cash outflow has been made ($22 million and $24 million at March 31, 2024 and December 31, 2023, respectively) are not receiving or being credited with a return. RECO recovers regulatory assets over a period of up to four years or

until they are addressed in its next base rate case in accordance with the rate provisions approved by the NJBPU. Regulatory liabilities are treated in a consistent manner.

Regulatory assets that represent future financial obligations and were deferred in accordance with the Utilities’ rate plans or orders issued by state regulators do not earn a return until such time as a cash outlay has been made. Regulatory liabilities are treated in a consistent manner. At March 31, 2024 and December 31, 2023, regulatory assets for Con Edison and CECONY that did not earn a return consisted of the following items:

Regulatory Assets Not Earning a Return*


	Con Edison		CECONY
(Millions of Dollars)	2024	2023	2024	2023
Environmental remediation costs	$1,098	$1,105	$1,015	$1,022
Revenue taxes	509	490	488	470
COVID-19 deferral for uncollectible accounts receivable	324	291	318	288
Deferred derivative losses - current	202	269	191	253
Deferred derivative losses - long term	133	163	121	148
Unrecognized pension and other postretirement costs	4	—	3	—
Other	41	29	40	28
Total	$2,311	$2,347	$2,176	$2,209

*This table presents regulatory assets not earning a return for which no cash outlay has been made.

The recovery periods for regulatory assets for which a cash outflow has not been made and that do not earn a return have not yet been determined, except as noted below, and are expected to be determined pursuant to the Utilities’ future rate plans to be filed or orders issued by the state regulators in connection therewith.

The Utilities recover unrecognized pension and other postretirement costs over 10 years, and the portion of investment gains or losses recognized in expense over 15 years, pursuant to NYSPSC policy.

The deferral for revenue taxes represents the New York State metropolitan transportation business tax surcharge on the cumulative temporary differences between the book and tax basis of assets and liabilities of the Utilities, as well as the difference between taxes collected and paid by the Utilities to fund mass transportation. The Utilities recover the majority of the revenue taxes over the remaining book lives of the electric and gas plant assets, as well as the steam plant assets for CECONY.

The Utilities recover deferred derivative losses – current within one year, and noncurrent generally within three years.

Regulatory Matters - Other Regulatory Matters Narrative (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Apr. 30, 2023
Public Utilities, General Disclosures [Line Items]
Other customer-provided capital rate (in percent)	5.95%	5.20%
Return on regulatory assets	$ 2,949		$ 2,541
Deferred derivative losses recovery period, current (in years)	1 year
Recovery period for deferred derivative losses (in years)	3 years
CECONY
Public Utilities, General Disclosures [Line Items]
Estimated capitalization costs	$ 88
Billing system costs	509
Net regulatory assets	1,094		1,113
CECONY \| Maximum
Public Utilities, General Disclosures [Line Items]
Capital expenditures limit	$ 421			$ 421
CECONY \| Commodity
Public Utilities, General Disclosures [Line Items]
Recovery period (in years)	4 years
CECONY \| Subsidiaries
Public Utilities, General Disclosures [Line Items]
Return on regulatory assets	$ 2,772		2,359
O&R
Public Utilities, General Disclosures [Line Items]
Net regulatory assets	17		18
RECO \| Subsidiaries
Public Utilities, General Disclosures [Line Items]
Return on regulatory assets	$ 22		$ 24

Regulatory Matters - Rate Plans and Bill Relief Narrative (Details) - USD ($) $ in Millions	1 Months Ended
	Apr. 30, 2024	Mar. 31, 2024	Jan. 31, 2024
O&R
Public Utilities, General Disclosures [Line Items]
Bill relief program, amount received		$ 9.0
CECONY
Public Utilities, General Disclosures [Line Items]
Bill relief program, amount received		$ 91.0
Gas \| O&R
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount			$ 3.1
Gas \| O&R \| Subsequent Event
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount	$ 17.5
Common Equity Ratio, Percentage	50.00%
Return on common equity (as a percent)	10.25%
Gas \| O&R \| Subsequent Event \| Year 2
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount	$ 22.8
Gas \| O&R \| Subsequent Event \| Year 3
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount	19.2
Electric \| O&R
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount			$ 7.5
Electric \| O&R \| Subsequent Event
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount	$ 10.7
Common Equity Ratio, Percentage	50.00%
Return on common equity (as a percent)	10.25%
Electric \| O&R \| Subsequent Event \| Year 2
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount	$ 34.8
Electric \| O&R \| Subsequent Event \| Year 3
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount	$ 55.0

Material Contingencies - Additional Information (Details) $ in Millions		1 Months Ended	3 Months Ended
	Mar. 12, 2014 building people	Feb. 28, 2017 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2020 USD ($)
Loss Contingencies [Line Items]
Accrued regulatory liability			$ 5,174	$ 5,328
Guarantee obligations maximum exposure			$ 124	$ 175
Payment Guarantee by CET Electric of Contributions to New York Transco LLC
Loss Contingencies [Line Items]
Estimated project cost (in percent)			175.00%
NY Transco \| Payment Guarantee by CET Electric of Contributions to New York Transco LLC
Loss Contingencies [Line Items]
Ownership interest (in percent)			45.70%
Manhattan Explosion and Fire
Loss Contingencies [Line Items]
Number of buildings destroyed by fire \| building	2
Number of people died in explosion and fire incident \| people	8
Number of people injured in explosion and fire incident (more than) \| people	50
Amount of costs that will not recover from customers		$ 126
Loss contingency accrual			$ 40		$ 40
Insurance receivable			$ 40		$ 40
Manhattan Explosion and Fire \| Settlement of Gas Proceedings
Loss Contingencies [Line Items]
Accrued regulatory liability		$ 27

Environmental Matters - Additional Information (Details) - Superfund Sites - Manufactured Gas Plant Sites - Maximum $ in Millions	Mar. 31, 2024 USD ($)
Site Contingency [Line Items]
Estimated aggregate undiscounted potential liability related environmental contaminants (up to)	$ 3,440,000
CECONY
Site Contingency [Line Items]
Estimated aggregate undiscounted potential liability related environmental contaminants (up to)	$ 3,295,000

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References + Details

Environmental Matters (Tables)

3 Months Ended

Mar. 31, 2024

Environmental Remediation Obligations [Abstract]

Accrued Liabilities and Regulatory Assets

The accrued liabilities and regulatory assets related to Superfund Sites at March 31, 2024 and December 31, 2023 were as follows:


	Con Edison		CECONY
(Millions of Dollars)	2024	2023	2024	2023
Accrued Liabilities:
Manufactured gas plant sites	$1,013	$1,016	$922	$924
Other Superfund Sites	99	102	98	102
Total	$1,112	$1,118	$1,020	$1,026
Regulatory assets	$1,098	$1,105	$1,015	$1,022

Environmental Remediation Costs

Environmental remediation costs incurred related to Superfund Sites for the three months ended March 31, 2024 and 2023 were as follows:


	For the Three Months Ended March 31,
	Con Edison		CECONY
(Millions of Dollars)	2024	2023	2024	2023
Remediation costs incurred	$7	$3	$6	$3

Accrued Liability for Asbestos Suits and Workers' Compensation Proceedings


	Con Edison		CECONY
(Millions of Dollars)	2024	2023	2024	2023
Accrued liability – asbestos suits	$8	$8	$7	$7
Regulatory assets – asbestos suits	$8	$8	$7	$7
Accrued liability – workers’ compensation	$57	$56	$55	$54
Regulatory liabilities – workers’ compensation	$15	$17	$15	$17

CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (UNAUDITED) - CECONY - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
NET INCOME	$ 720	$ 1,433
Pension and other postretirement benefit plan liability adjustments, net of taxes	(4)	4
TOTAL OTHER COMPREHENSIVE LOSS, NET OF TAXES	(4)	4
COMPREHENSIVE INCOME	716	1,437
CECONY
NET INCOME	694	604
Pension and other postretirement benefit plan liability adjustments, net of taxes	0	(1)
TOTAL OTHER COMPREHENSIVE LOSS, NET OF TAXES	0	(1)
COMPREHENSIVE INCOME	$ 694	$ 603

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

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+ Details

Income Tax

3 Months Ended

Mar. 31, 2024

Income Tax Disclosure [Abstract]

Income Tax

Con Edison’s income tax expense was $184 million for the three months ended March 31, 2024 and $243 million for the three months ended March 31, 2023. The decrease in income tax expense is primarily due to lower income before income tax expense, primarily due to the prior year gain on the sale of the Clean Energy Businesses and higher amortization of excess deferred federal income taxes, offset in part by the absence of a tax benefit from the recognition of deferred unamortized investment tax credits in 2023, changes in state apportionments in 2023 and lower flow through tax benefits in 2024 for plant related items.

CECONY’s income tax expense was $181 million for the three months ended March 31, 2024 and $154 million for the three months ended March 31, 2023. The increase in income tax expense is primarily due to higher income before income tax expense, higher state income taxes and lower flow through tax benefits in 2024 for plant related items, offset in part by higher amortization of excess deferred federal income taxes.


	For the Three Months Ended March 31,
	Con Edison				CECONY
(% of Pre-tax income)	2024		2023		2024		2023
STATUTORY TAX RATE
Federal	21	%	21	%	21	%	21	%
Changes in computed taxes resulting from:
State income tax, net of federal income taxes	5		5		5		5
Amortization of excess deferred federal income taxes	(6)		(3)		(5)		(6)

Cost of removal	1		—		1		1



Allowance for uncollectible accounts, net of COVID-19 assistance	(1)		—		(1)		(1)








Impacts from the sale of the Clean Energy Businesses:
Deferred unamortized ITC recognized on sale of subsidiary	—		(7)		—		—
Changes in state apportionments, net of federal income taxes	—		(3)		—		—
Valuation allowance on state NOLs, net of federal income tax	—		1		—		—




Effective tax rate	20	%	14	%	21	%	20	%

Inflation Reduction Act

On August 16, 2022, the Inflation Reduction Act (IRA) was signed into law. Among other provisions, the IRA implemented a 15% corporate alternative minimum tax (CAMT) based on GAAP net income, with certain adjustments as defined by the IRA, and clean energy-related provisions. The IRA's clean energy provisions included, among other provisions, the extension and modification of existing investment and production tax credits for projects placed in service through 2024 and introduced new technology-neutral clean energy-related credits beginning in 2025.

Under the IRA, a corporation is subject to the CAMT if its average annual adjusted financial statement income for the three taxable year period ending prior to the taxable year exceeds $1,000 million, and applies to tax years beginning after December 31, 2022. The Companies were not subject to the CAMT in 2023, but are subject to the CAMT beginning in 2024. There were no material impacts from the provisions of the CAMT on the Companies’ financial position, results of operations or liquidity for the three months ended March 31, 2024. The Companies will continue to assess the IRA as new information and anticipated guidance from the U.S. Department of the Treasury becomes available.

Uncertain Tax Positions

At March 31, 2024, the estimated liability for uncertain tax positions for Con Edison was $12 million ($7 million for CECONY). For the three months ended March 31, 2024, Con Edison recognized $1 million ($1 million for CECONY) of income tax expense related to current year positions. Con Edison and CECONY reasonably expect to resolve within the next twelve months approximately $3 million of various federal uncertainties due to the expected completion of ongoing tax examinations, of which the entire amount, if recognized, would reduce their effective tax rate. The total amount of unrecognized tax benefits, if recognized, that would reduce Con Edison’s effective tax rate is $12 million ($11 million, net of federal income taxes) with $7 million attributable to CECONY.

The Companies recognize interest on liabilities for uncertain tax positions in interest expense and would recognize penalties, if any, in operating expenses in the Companies’ consolidated income statements. For the three months ended March 31, 2024 and 2023, the Companies recognized an immaterial amount of interest expense and no penalties for uncertain tax positions in their consolidated income statements. At March 31, 2024 and December 31, 2023, the Companies recognized an immaterial amount of accrued interest on their consolidated balance sheets.

In February 2024, New York State completed its examination of the Companies' New York State income and franchise tax returns for tax years 2015 through 2021 with no changes. The Companies' return for tax year 2022 remains open under the statute of limitations.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

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-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-17

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I.5.Q1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479360/740-10-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 11.C)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479360/740-10-S99-2

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482603/740-30-50-2

+ Details

Cover Page - shares	3 Months Ended
Cover Page - shares	Mar. 31, 2024	Apr. 30, 2024
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2024
Document Transition Report	false
Entity File Number	1-14514
Entity Registrant Name	Consolidated Edison, Inc.
Entity Incorporation, State or Country Code	NY
Entity Tax Identification Number	13-3965100
Entity Address, Address Line One	4 Irving Place,
Entity Address, City or Town	New York,
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10003
City Area Code	(212)
Local Phone Number	460-4600
Title of 12(b) Security	Common Shares ($.10 par value)
Trading Symbol	ED
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		345,834,711
Amendment Flag	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Entity Central Index Key	0001047862
Current Fiscal Year End Date	--12-31
CECONY
Document Information [Line Items]
Entity File Number	1-01217
Entity Registrant Name	Consolidated Edison Company of New York, Inc.
Entity Incorporation, State or Country Code	NY
Entity Tax Identification Number	13-5009340
Entity Address, Address Line One	4 Irving Place,
Entity Address, City or Town	New York,
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10003
City Area Code	(212)
Local Phone Number	460-4600
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Amendment Flag	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Entity Central Index Key	0000023632
Current Fiscal Year End Date	--12-31

Financial Information by Business Segment (Tables)

3 Months Ended

Mar. 31, 2024

Segment Reporting [Abstract]

Financial Data for Business Segments

The financial data for the business segments for the three months ended March 31, 2024 and 2023 were as follows:


	For the Three Months Ended March 31,
	Operating revenues		Inter-segment revenues		Depreciation and amortization		Operating income/(loss)
(Millions of Dollars)	2024	2023	2024	2023	2024	2023	2024	2023
CECONY
Electric	$2,441	$2,356	$4	$5	$370	$343	$240	$194
Gas	1,243	1,291	2	2	114	105	615	559
Steam	287	306	19	18	26	25	134	56
Consolidation adjustments	—	—	(25)	(25)	—	—	—	—
Total CECONY	$3,971	$3,953	$—	$—	$510	$473	$989	$809
O&R
Electric	$195	$182	$—	$—	$20	$18	$14	$1
Gas	113	139	—	—	9	7	42	40
Total O&R	$308	$321	$—	$—	$29	$25	$56	$41
Clean Energy Businesses (a)	—	129	—	—	—	—	—	36
Con Edison Transmission	1	1	—	—	—	—	(3)	(2)
Other (b)	—	(1)	—	—	—	1	(31)	855
Total Con Edison	$4,280	$4,403	$—	$—	$539	$499	$1,011	$1,739

(b) Other includes the parent company, Con Edison’s tax equity investments, the deferred project held for sale and consolidation adjustments.

Derivative Instruments and Hedging Activities - Hedged Volume of Derivative Transactions (Details)	Mar. 31, 2024 MWh MW MMBTU gal
Electric Energy (MWh)
Derivatives, Fair Value [Line Items]
Notional amount \| MWh	31,374,625
Capacity (MW)
Derivatives, Fair Value [Line Items]
Notional amount \| MW	42,600
Natural Gas (Dt)
Derivatives, Fair Value [Line Items]
Notional amount \| MMBTU	296,190,000
Refined Fuels (gallons)
Derivatives, Fair Value [Line Items]
Notional amount \| gal	4,032,000
CECONY \| Electric Energy (MWh) \| Subsidiaries
Derivatives, Fair Value [Line Items]
Notional amount \| MWh	28,801,875
CECONY \| Capacity (MW) \| Subsidiaries
Derivatives, Fair Value [Line Items]
Notional amount \| MW	33,600
CECONY \| Natural Gas (Dt) \| Subsidiaries
Derivatives, Fair Value [Line Items]
Notional amount \| MMBTU	278,560,000
CECONY \| Refined Fuels (gallons) \| Subsidiaries
Derivatives, Fair Value [Line Items]
Notional amount \| gal	4,032,000

Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	$ 4,279	$ 4,222
Total revenues	4,280	4,403
Other revenues
Disaggregation of Revenue [Line Items]
Total revenues	1	181
CECONY
Disaggregation of Revenue [Line Items]
Total revenues	3,971	3,953
Operating Segments
Disaggregation of Revenue [Line Items]
Total revenues	4,280	4,403
Operating Segments \| Clean Energy Businesses
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	0	82
Total revenues	0	129
Operating Segments \| Clean Energy Businesses \| Other revenues
Disaggregation of Revenue [Line Items]
Total revenues	0	47
Operating Segments \| Clean Energy Businesses \| Renewables
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	0	68
Total revenues	0	68
Operating Segments \| Clean Energy Businesses \| Renewables \| Other revenues
Disaggregation of Revenue [Line Items]
Total revenues	0	0
Operating Segments \| Clean Energy Businesses \| Energy services
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	0	7
Total revenues	0	7
Operating Segments \| Clean Energy Businesses \| Energy services \| Other revenues
Disaggregation of Revenue [Line Items]
Total revenues	0	0
Operating Segments \| Clean Energy Businesses \| Develop/Transfer Projects
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	0	7
Total revenues	0	7
Operating Segments \| Clean Energy Businesses \| Develop/Transfer Projects \| Other revenues
Disaggregation of Revenue [Line Items]
Total revenues	0	0
Operating Segments \| Clean Energy Businesses \| Other
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	0	0
Total revenues	0	47
Operating Segments \| Clean Energy Businesses \| Other \| Other revenues
Disaggregation of Revenue [Line Items]
Total revenues	0	47
Operating Segments \| Con Edison Transmission
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1	1
Total revenues	1	1
Operating Segments \| Con Edison Transmission \| Other revenues
Disaggregation of Revenue [Line Items]
Total revenues	0	0
Operating Segments \| CECONY \| Subsidiaries
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	3,962	3,823
Total revenues	3,971	3,953
Operating Segments \| CECONY \| Other revenues \| Subsidiaries
Disaggregation of Revenue [Line Items]
Total revenues	9	130
Operating Segments \| CECONY \| Electric \| Subsidiaries
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	2,439	2,263
Total revenues	2,441	2,356
Operating Segments \| CECONY \| Electric \| Other revenues \| Subsidiaries
Disaggregation of Revenue [Line Items]
Total revenues	2	93
Operating Segments \| CECONY \| Gas \| Subsidiaries
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1,229	1,257
Total revenues	1,243	1,291
Operating Segments \| CECONY \| Gas \| Other revenues \| Subsidiaries
Disaggregation of Revenue [Line Items]
Total revenues	14	34
Operating Segments \| CECONY \| Steam \| Subsidiaries
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	294	303
Total revenues	287	306
Operating Segments \| CECONY \| Steam \| Other revenues \| Subsidiaries
Disaggregation of Revenue [Line Items]
Total revenues	(7)	3
Operating Segments \| O&R \| Subsidiaries
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	316	316
Total revenues	308	321
Operating Segments \| O&R \| Other revenues \| Subsidiaries
Disaggregation of Revenue [Line Items]
Total revenues	(8)	5
Operating Segments \| O&R \| Electric \| Subsidiaries
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	200	178
Total revenues	195	182
Operating Segments \| O&R \| Electric \| Other revenues \| Subsidiaries
Disaggregation of Revenue [Line Items]
Total revenues	(5)	4
Operating Segments \| O&R \| Gas \| Subsidiaries
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	116	138
Total revenues	113	139
Operating Segments \| O&R \| Gas \| Other revenues \| Subsidiaries
Disaggregation of Revenue [Line Items]
Total revenues	(3)	1
Other
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	0	0
Total revenues	0	(1)
Other \| Other revenues
Disaggregation of Revenue [Line Items]
Total revenues	$ 0	$ (1)

Environmental Matters - Environmental Remediation Costs (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Environmental Exit Cost [Line Items]
Remediation costs incurred	$ 7	$ 3
CECONY \| Subsidiaries
Environmental Exit Cost [Line Items]
Remediation costs incurred	$ 6	$ 3

Income Tax - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Taxes Disclosure [Line Items]
Income tax expense (benefit)	$ 184	$ 243
Estimated liability for uncertain tax positions	12
Unrecognized tax benefits, increase resulting from current period tax positions	1
Effective income tax rate reconciliation, uncertainty of taxes	3
Unrecognized tax benefits, net	11
CECONY
Income Taxes Disclosure [Line Items]
Income tax expense (benefit)	181
CECONY \| Subsidiaries
Income Taxes Disclosure [Line Items]
Income tax expense (benefit)	181	$ 154
Estimated liability for uncertain tax positions	7
Unrecognized tax benefits, increase resulting from current period tax positions	$ 1

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References + Details

Derivative Instruments and Hedging Activities (Tables)

3 Months Ended

Mar. 31, 2024

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Offsetting of Liabilities

The fair values of the Companies’ derivatives including the offsetting of assets and liabilities on the consolidated balance sheet at March 31, 2024 and December 31, 2023 were:


(Millions of Dollars)	2024				2023
Balance Sheet Location	Gross Amounts of Recognized Assets/(Liabilities)	Gross Amounts Offset	Net Amounts of Assets/ (Liabilities) (a)		Gross Amounts of Recognized Assets/(Liabilities)	Gross Amounts Offset	Net Amounts of Assets/ (Liabilities) (a)
Con Edison
Fair value of derivative assets
Current	$127	$(46)	$81	(b)	$83	$(38)	$45	(b)
Noncurrent	71	(23)	48		77	(29)	48


Total fair value of derivative assets	$198	$(69)	$129		$160	$(67)	$93
Fair value of derivative liabilities
Current	$(164)	$58	$(106)	(b)	$(230)	$52	$(178)	(b)
Noncurrent	(123)	29	(94)		(154)	33	(121)


Total fair value of derivative liabilities	$(287)	$87	$(200)		$(384)	$85	$(299)
Net fair value derivative assets/(liabilities)	$(89)	$18	$(71)		$(224)	$18	$(206)
CECONY
Fair value of derivative assets
Current	$121	$(45)	$76	(b)	$78	$(35)	$43	(b)
Noncurrent	69	(22)	47		76	(27)	49
Total fair value of derivative assets	$190	$(67)	$123		$154	$(62)	$92
Fair value of derivative liabilities
Current	$(156)	$55	$(101)	(b)	$(217)	$48	$(169)
Noncurrent	(112)	27	(85)		(139)	31	(108)
Total fair value of derivative liabilities	$(268)	$82	$(186)		$(356)	$79	$(277)
Net fair value derivative assets/(liabilities)	$(78)	$15	$(63)		$(202)	$17	$(185)

Offsetting of Assets

The fair values of the Companies’ derivatives including the offsetting of assets and liabilities on the consolidated balance sheet at March 31, 2024 and December 31, 2023 were:


(Millions of Dollars)	2024				2023
Balance Sheet Location	Gross Amounts of Recognized Assets/(Liabilities)	Gross Amounts Offset	Net Amounts of Assets/ (Liabilities) (a)		Gross Amounts of Recognized Assets/(Liabilities)	Gross Amounts Offset	Net Amounts of Assets/ (Liabilities) (a)
Con Edison
Fair value of derivative assets
Current	$127	$(46)	$81	(b)	$83	$(38)	$45	(b)
Noncurrent	71	(23)	48		77	(29)	48


Total fair value of derivative assets	$198	$(69)	$129		$160	$(67)	$93
Fair value of derivative liabilities
Current	$(164)	$58	$(106)	(b)	$(230)	$52	$(178)	(b)
Noncurrent	(123)	29	(94)		(154)	33	(121)


Total fair value of derivative liabilities	$(287)	$87	$(200)		$(384)	$85	$(299)
Net fair value derivative assets/(liabilities)	$(89)	$18	$(71)		$(224)	$18	$(206)
CECONY
Fair value of derivative assets
Current	$121	$(45)	$76	(b)	$78	$(35)	$43	(b)
Noncurrent	69	(22)	47		76	(27)	49
Total fair value of derivative assets	$190	$(67)	$123		$154	$(62)	$92
Fair value of derivative liabilities
Current	$(156)	$55	$(101)	(b)	$(217)	$48	$(169)
Noncurrent	(112)	27	(85)		(139)	31	(108)
Total fair value of derivative liabilities	$(268)	$82	$(186)		$(356)	$79	$(277)
Net fair value derivative assets/(liabilities)	$(78)	$15	$(63)		$(202)	$17	$(185)

Realized and Unrealized Gains or Losses on Commodity Derivatives

The following table presents the realized and unrealized gains or losses on derivatives that have been deferred or recognized in earnings for the three months ended March 31, 2024 and 2023:


		For the Three Months Ended March 31,
		Con Edison		CECONY
(Millions of Dollars)	Balance Sheet Location	2024	2023	2024	2023
Pre-tax gains/(losses) deferred in accordance with accounting rules for regulated operations:
Current	Regulatory liabilities	$43	$(149)	$40	$(137)
Noncurrent	Regulatory liabilities	(2)	(126)	(2)	(111)
Total deferred gains/(losses)		$41	$(275)	$38	$(248)
Current	Regulatory assets	$67	$(16)	$63	$(12)
Current	Recoverable energy costs	(114)	(291)	(104)	(274)
Noncurrent	Regulatory assets	30	(133)	26	(130)
Total deferred gains/(losses)		$(17)	$(440)	$(15)	$(416)
Net deferred gains/(losses) (a)		$24	$(715)	$23	$(664)
	Income Statement Location
Pre-tax gains/(losses) recognized in income
	Gas purchased for resale	$—	$4	$—	$—
	Non-utility revenue	—	17	—	—
	Other operations and maintenance expense	1	—	1	—
	Other interest expense (b)	—	5	—	—
Total pre-tax gains/(losses) recognized in income		$1	$26	$1	$—

Hedged Volume of Derivative Transactions

The following table presents the hedged volume of Con Edison’s and CECONY’s commodity derivative transactions at March 31, 2024:


	Electric Energy (MWh) (a)(b)	Capacity (MW-mos) (a)	Natural Gas (Dt) (a)(b)	Refined Fuels (gallons)
Con Edison	31,374,625	42,600	296,190,000	4,032,000
CECONY	28,801,875	33,600	278,560,000	4,032,000

(a)Volumes are reported net of long and short positions, except natural gas collars where the volumes of long positions are reported.

(b)Excludes electric congestion and gas basis swap contracts which are associated with electric and gas contracts and hedged volumes.

Aggregate Fair Value of Companies' Derivative Instruments with Credit-Risk-Related Contingent Features


(Millions of Dollars)	Con Edison (a)	CECONY (a)
Aggregate fair value – net liabilities	$164	$153
Collateral posted	255	255
Additional collateral (b) (downgrade one level from current ratings)	10	—
Additional collateral (b)(c) (downgrade to below investment grade from current ratings)	74	56

- Definition

Tabular disclosure of credit derivatives which includes information by sellers of credit derivatives, about each credit derivative, or each group of similar credit derivatives, including (a) the nature of the credit derivative - its term, how it arose, the events or circumstances that would require the seller to perform under the credit derivative, and the current status of the payment/performance risk of the credit derivative; (b) the maximum potential amount of future payments (undiscounted) the seller could be required to make under the credit derivative; (c) the current fair value of the credit derivative; and (d) the nature of any recourse provisions under the credit derivative, and any assets held either as collateral or by third parties. A credit derivative is a derivative instrument (1) in which one or more of its underlyings are related to the credit risk of a specified entity (or a group of entities) or an index based on the credit risk of a group of entities and (2) that exposes the seller to potential loss from credit-risk-related events specified in the contract. Examples of credit derivatives within the scope of this paragraph include, but are not limited to, credit default swaps, credit spread options, and credit index products; also includes a hybrid instrument that has an embedded credit derivative (for example, but not limited to, a credit-linked note).

+ References + Details

- Definition

Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item.

+ References + Details

Income Tax - Income Tax Reconciliation (Details)	3 Months Ended
Income Tax - Income Tax Reconciliation (Details)	Mar. 31, 2024	Mar. 31, 2023
STATUTORY TAX RATE
Federal	21.00%	21.00%
Changes in computed taxes resulting from:
State income tax, net of federal income taxes	5.00%	5.00%
Amortization of excess deferred federal income taxes	(6.00%)	(3.00%)
Cost of removal	1.00%	0.00%
Allowance for uncollectible accounts, net of COVID-19 assistance	(1.00%)	0.00%
Deferred unamortized ITC recognized on sale of subsidiary	0	(0.07)
Changes in state apportionments, net of federal income taxes	0	(0.03)
Valuation allowance on state NOLs, net of federal income tax	0.00%	1.00%
Effective tax rate	20.00%	14.00%
CECONY \| Subsidiaries
STATUTORY TAX RATE
Federal	21.00%	21.00%
Changes in computed taxes resulting from:
State income tax, net of federal income taxes	5.00%	5.00%
Amortization of excess deferred federal income taxes	(5.00%)	(6.00%)
Cost of removal	1.00%	1.00%
Allowance for uncollectible accounts, net of COVID-19 assistance	(1.00%)	(1.00%)
Deferred unamortized ITC recognized on sale of subsidiary	0	0
Changes in state apportionments, net of federal income taxes	0	0
Valuation allowance on state NOLs, net of federal income tax	0.00%	0.00%
Effective tax rate	21.00%	20.00%

Derivative Instruments and Hedging Activities - Realized and Unrealized Gains (Losses) on Commodity Derivatives (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Pre-tax gains/(losses) deferred in accordance with accounting rules for regulated operations:
Total deferred gains/(losses)	$ 41	$ (275)
Total deferred gains/(losses)	(17)	(440)
Net deferred gains/(losses)	24	(715)
Pre-tax gains/(losses) recognized in income
Total pre-tax gains/(losses) recognized in income	1	26
Gas purchased for resale
Pre-tax gains/(losses) recognized in income
Total pre-tax gains/(losses) recognized in income	0	4
Non-utility revenue
Pre-tax gains/(losses) recognized in income
Total pre-tax gains/(losses) recognized in income	0	17
Other operations and maintenance expense
Pre-tax gains/(losses) recognized in income
Total pre-tax gains/(losses) recognized in income	1	0
Other interest expense
Pre-tax gains/(losses) recognized in income
Total pre-tax gains/(losses) recognized in income	0	5
Regulatory Liabilities, Current
Pre-tax gains/(losses) deferred in accordance with accounting rules for regulated operations:
Total deferred gains/(losses)	43	(149)
Regulatory Liabilities, Noncurrent
Pre-tax gains/(losses) deferred in accordance with accounting rules for regulated operations:
Total deferred gains/(losses)	(2)	(126)
Regulatory Assets Current
Pre-tax gains/(losses) deferred in accordance with accounting rules for regulated operations:
Total deferred gains/(losses)	67	(16)
Recoverable Energy Costs, Current
Pre-tax gains/(losses) deferred in accordance with accounting rules for regulated operations:
Total deferred gains/(losses)	(114)	(291)
Regulatory Assets Non Current
Pre-tax gains/(losses) deferred in accordance with accounting rules for regulated operations:
Total deferred gains/(losses)	30	(133)
CECONY \| Subsidiaries
Pre-tax gains/(losses) deferred in accordance with accounting rules for regulated operations:
Total deferred gains/(losses)	38	(248)
Total deferred gains/(losses)	(15)	(416)
Net deferred gains/(losses)	23	(664)
Pre-tax gains/(losses) recognized in income
Total pre-tax gains/(losses) recognized in income	1	0
CECONY \| Gas purchased for resale \| Subsidiaries
Pre-tax gains/(losses) recognized in income
Total pre-tax gains/(losses) recognized in income	0	0
CECONY \| Non-utility revenue \| Subsidiaries
Pre-tax gains/(losses) recognized in income
Total pre-tax gains/(losses) recognized in income	0	0
CECONY \| Other operations and maintenance expense \| Subsidiaries
Pre-tax gains/(losses) recognized in income
Total pre-tax gains/(losses) recognized in income	1	0
CECONY \| Other interest expense \| Subsidiaries
Pre-tax gains/(losses) recognized in income
Total pre-tax gains/(losses) recognized in income	0	0
CECONY \| Regulatory Liabilities, Current \| Subsidiaries
Pre-tax gains/(losses) deferred in accordance with accounting rules for regulated operations:
Total deferred gains/(losses)	40	(137)
CECONY \| Regulatory Liabilities, Noncurrent \| Subsidiaries
Pre-tax gains/(losses) deferred in accordance with accounting rules for regulated operations:
Total deferred gains/(losses)	(2)	(111)
CECONY \| Regulatory Assets Current \| Subsidiaries
Pre-tax gains/(losses) deferred in accordance with accounting rules for regulated operations:
Total deferred gains/(losses)	63	(12)
CECONY \| Recoverable Energy Costs, Current \| Subsidiaries
Pre-tax gains/(losses) deferred in accordance with accounting rules for regulated operations:
Total deferred gains/(losses)	(104)	(274)
CECONY \| Regulatory Assets Non Current \| Subsidiaries
Pre-tax gains/(losses) deferred in accordance with accounting rules for regulated operations:
Total deferred gains/(losses)	$ 26	$ (130)

Dispositions (Tables)

3 Months Ended

Mar. 31, 2024

Discontinued Operations and Disposal Groups [Abstract]

Pre-Tax Operating Income for Clean Energy Businesses


						For the Three Months Ended March 31,
(Millions of Dollars)						2023
Pre-tax operating income						$25
Pre-tax operating income, excluding non-controlling interest						$21


(Millions of Dollars)			March 31, 2024
ASSETS
CURRENT ASSETS
Cash and temporary cash investments			$1


Accrued unbilled revenue			1

Restricted cash			5

Prepayments			1
Other current assets			2
TOTAL CURRENT ASSETS			10

NON-UTILITY PLANT
Non-utility property, net accumulated depreciation			76

NET PLANT			76
OTHER NONCURRENT ASSETS

Intangible assets less accumulated amortization			71
Operating lease right-of-use asset			7



TOTAL OTHER NONCURRENT ASSETS			78
TOTAL ASSETS			$164


(Millions of Dollars)			March 31, 2024
LIABILITIES
CURRENT LIABILITIES
Long-term debt due within one year			$2




Operating lease liabilities			2

Other current liabilities			6
TOTAL CURRENT LIABILITIES			10
NONCURRENT LIABILITIES
Asset retirement obligations			3

Operating lease liabilities			5

TOTAL NONCURRENT LIABILITIES			8
LONG-TERM DEBT			59
TOTAL LIABILITIES			$77

- Definition

+ References

+ Details

Current Expected Credit Losses (Tables)

3 Months Ended

Mar. 31, 2024

Credit Loss [Abstract]

Rollforward of Allowance for Credit Losses

The table below presents a rollforward by major portfolio segment type for the three months ended March 31, 2024 and 2023:


	For the Three Months Ended March 31,
	Con Edison				CECONY
	Accounts receivable - customers		Other receivables		Accounts receivable - customers		Other receivables
(Millions of Dollars)	2024	2023	2024	2023	2024	2023	2024	2023
Allowance for credit losses
Beginning Balance at January 1,	$360	$322	$13	$10	$353	$314	$9	$7
Recoveries	14	4	—	—	11	4	—	—
Write-offs	(66)	(48)	—	(1)	(62)	(47)	—	—
Reserve adjustments	86	(34)	4	1	81	(35)	3	1
Ending Balance March 31,	$394	$244	$17	$10	$383	$236	$12	$8

Derivative Instruments and Hedging Activities - Additional Information (Details) $ in Millions	Mar. 31, 2024 USD ($)
Investment Holdings [Line Items]
Energy supply and hedging activities credit exposure total	$ 88
Makeup of net credit exposure with investment-grade counterparties	5
Makeup of net credit exposure with commodity exchange brokers	7
Makeup of net credit exposure with non-investment grade/non-rated counterparties	76
CECONY \| Subsidiaries
Investment Holdings [Line Items]
Energy supply and hedging activities credit exposure total	84
Makeup of net credit exposure with investment-grade counterparties	2
Makeup of net credit exposure with commodity exchange brokers	6
Makeup of net credit exposure with non-investment grade/non-rated counterparties	$ 76

Other Postretirement Benefits - Additional Information (Details) $ in Millions	Mar. 31, 2024 USD ($)
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected future employer contributions, next fiscal year	$ 7

Leases (Tables)

3 Months Ended

Mar. 31, 2024

Leases [Abstract]

Lease Costs, Cash Flows and Other Related Information

Operating lease cost and cash paid for amounts included in the measurement of lease liabilities for the three months ended March 31, 2024 and 2023 were as follows:


	For the Three Months Ended March 31,
	Con Edison		CECONY
(Millions of Dollars)	2024	2023(a)	2024	2023
Operating lease cost	$17	$20	$16	$17
Operating lease cash flows	$5	$7	$4	$4

Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Millions	Mar. 31, 2024	Mar. 31, 2023
Pay vs Performance Disclosure
NET INCOME	$ 720	$ 1,433

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

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-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
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-Subparagraph (SX 210.4-08(g)(1)(ii))
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
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Reference 11: http://www.xbrl.org/2003/role/disclosureRef
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Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
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-Name Accounting Standards Codification
-Section 55
-Paragraph 10
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-URI https://asc.fasb.org//1943274/2147480167/946-830-55-10

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
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-Name Accounting Standards Codification
-Section 45
-Paragraph 7
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-URI https://asc.fasb.org//1943274/2147483581/946-220-45-7

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
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Reference 16: http://www.xbrl.org/2003/role/disclosureRef
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Reference 20: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 27: http://www.xbrl.org/2003/role/disclosureRef
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Reference 28: http://www.xbrl.org/2003/role/disclosureRef
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Reference 29: http://www.xbrl.org/2003/role/disclosureRef
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Reference 30: http://www.xbrl.org/2003/role/disclosureRef
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Reference 36: http://www.xbrl.org/2003/role/disclosureRef
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Reference 37: http://www.xbrl.org/2003/role/disclosureRef
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Reference 38: http://fasb.org/us-gaap/role/ref/legacyRef
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+ Details

Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2024

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on Recurring Basis

Assets and liabilities measured at fair value on a recurring basis as of March 31, 2024 and December 31, 2023 are summarized below.


	2024					2023
(Millions of Dollars)	Level 1	Level 2	Level 3	Netting Adjustment (d)	Total	Level 1	Level 2	Level 3	Netting Adjustment (d)	Total
Con Edison
Derivative assets:
Commodity (a)(b)(c)	$4	$156	$2	$(27)	$135	$6	$146	$2	$(54)	$100


Mutual Funds (a)(b)	523	—	—	—	523	505	—	—	—	505
Cash Value of Life Insurance Policies (a)(b)	—	125	—	—	125	—	118	—	—	118
Total assets	$527	$281	$2	$(27)	$783	$511	$264	$2	$(54)	$723
Derivative liabilities:
Commodity (a)(b)(c)	$20	$229	$2	$(44)	207	$22	$347	$10	$(65)	$314


CECONY
Derivative assets:
Commodity (a)(b)(c)	$4	$151	$1	$(28)	$128	$6	$143	$1	$(52)	$98
Mutual Funds (a)(b)	505	—	—	—	505	488	—	—	—	488
Cash Value of Life Insurance Policies (a)(b)	—	120	—	—	120	—	113	—	—	113
Total assets	$509	$271	$1	$(28)	$753	$494	$256	$1	$(52)	$699
Derivative liabilities:
Commodity (a)(b)(c)	$18	$216	$1	$(47)	188	$20	$326	$6	$(65)	$287

Schedule of Commodity Derivatives

Fair Value of Level 3 at March 31, 2024

Valuation
Techniques

Unobservable Inputs

Range

(Millions of Dollars)

Con Edison – Commodity

Electricity

immaterial

Discounted Cash Flow

Forward energy prices (a)

$37.65-$88.95 per MWh

Electricity

$(1)

Discounted Cash Flow

Forward capacity prices (a)

$1.92-$7.53 per kW-month

Transmission Congestion Contracts

Discounted Cash Flow

Inter-zonal forward price curves adjusted for historical zonal losses (b)

$(0.10)-$2.68 per MWh

Total Con Edison—Commodity

$—

CECONY – Commodity

Electricity

(1)

Discounted Cash Flow

Forward capacity prices (a)

$1.92-$7.53 per kW-month

Transmission Congestion Contracts

Discounted Cash Flow

Inter-zonal forward price curves adjusted for historical zonal losses (b)

$(0.10)-$2.68 per MWh

Total CECONY—Commodity

$—

(a)Generally, increases/(decreases) in this input in isolation would result in a higher/(lower) fair value measurement.

(b)Generally, increases/(decreases) in this input in isolation would result in a lower/(higher) fair value measurement.

Reconciliation of Beginning and Ending Net Balances for Assets and Liabilities Measured at Level 3 Fair Value


	For the Three Months Ended March 31,
	Con Edison		CECONY
(Millions of Dollars)	2024	2023	2024	2023
Beginning balance as of January 1,	$(8)	$15	$(5)	$(6)
Included in earnings	(2)	(2)	(1)	(1)
Included in regulatory assets and liabilities	1	8	—	7

Settlements	5	4	2	2
Decrease due to the sale of the Clean Energy Businesses (a)	—	(29)	—	—

Transfer out of level 3	4	(7)	4	(7)
Ending balance as of March 31,	$—	$(11)	$—	$(5)

(a) On March 1, 2023, Con Edison completed the sale of all of the stock of the Clean Energy Businesses. See Note Q and Note R.

CONSOLIDATED INCOME STATEMENT (UNAUDITED) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
OPERATING REVENUES
TOTAL OPERATING REVENUES	$ 4,280	$ 4,403
OPERATING EXPENSES
Depreciation and amortization	539	499
Taxes, other than income taxes	808	765
TOTAL OPERATING EXPENSES	3,239	3,519
Gain (Loss) on sale of the Clean Energy Businesses	(30)	855
OPERATING INCOME	1,011	1,739
OTHER INCOME (DEDUCTIONS)
Investment income	19	8
Other income	164	204
Allowance for equity funds used during construction	10	6
Other deductions	(11)	(22)
TOTAL OTHER INCOME	182	196
INCOME BEFORE INTEREST AND INCOME TAX EXPENSE	1,193	1,935
INTEREST EXPENSE (INCOME)
Interest on long-term debt	255	251
Other interest expense	48	24
Allowance for borrowed funds used during construction	(14)	(13)
NET INTEREST EXPENSE	289	262
INCOME BEFORE INCOME TAX EXPENSE	904	1,673
INCOME TAX EXPENSE	184	243
NET INCOME	720	1,430
Loss attributable to non-controlling interest	0	(3)
NET INCOME	$ 720	$ 1,433
Net income per common share - basic (dollars per share)	$ 2.08	$ 4.06
Net income per common share - diluted (dollars per share)	$ 2.08	$ 4.05
AVERAGE NUMBER OF SHARES OUTSTANDING-BASIC (shares)	345.5	352.9
AVERAGE NUMBER OF SHARES OUTSTANDING—DILUTED (shares)	346.8	354.2
Electric
OPERATING REVENUES
TOTAL OPERATING REVENUES	$ 2,636	$ 2,538
Gas
OPERATING REVENUES
TOTAL OPERATING REVENUES	1,356	1,430
OPERATING EXPENSES
Operating costs	267	468
Steam
OPERATING REVENUES
TOTAL OPERATING REVENUES	287	306
Non-utility
OPERATING REVENUES
TOTAL OPERATING REVENUES	1	129
Purchased power
OPERATING EXPENSES
Operating costs	649	702
Fuel
OPERATING EXPENSES
Operating costs	88	189
Other operations and maintenance
OPERATING EXPENSES
Operating costs	$ 888	$ 896