Soliciting Material Soliciting Material Written Communications Written Communications Local Phone Number Local Phone Number Cover [Abstract] Cover [Abstract] Entity Information [Line Items] Entity Information [Line Items] Document Period End Date Document Period End Date Pre-commencement Tender Offer Pre-commencement Tender Offer Amendment Flag Amendment Flag Entity Central Index Key Entity Central Index Key Pre-commencement Issuer Tender Offer Pre-commencement Issuer Tender Offer Legal Entity [Axis] Legal Entity [Axis] Entity Tax Identification Number Entity Tax Identification Number Entity Emerging Growth Company Entity Emerging Growth Company Entities [Table] Entities [Table] Entity File Number Entity File Number Entity Registrant Name Entity Registrant Name Entity [Domain] Entity [Domain] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Address, State or Province Entity Address, State or Province Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Address, City or Town Entity Address, City or Town Entity Address, Address Line One Entity Address, Address Line One Document Type Document Type City Area Code City Area Code CECONY Consolidated Edison Company of New York, Inc. [Member] Consolidated Edison Company of New York, Inc. [Member]