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Electricity and Gas Purchase Agreements (Tables)
 12 Months Ended
Dec. 31, 2023
Regulated Operations [Abstract]  
Summary of Estimated Capacity and Other Fixed Payments
The future capacity and other fixed payments under the electricity and gas purchase agreements are estimated to be as follows:
(Millions of Dollars)20242025202620272028
All Years
Thereafter
Con Edison
Electricity power purchase agreements$155$89$59$44$44$346
Natural gas29910117——
Gas transportation and storage5214864604093012,682
CECONY
Electricity power purchase agreements15185584444346
Natural gas258996——
Gas transportation and storage4504203983532592,311
Summary of Capacity, Energy and Other Fixed Payments The company’s payments under the significant terms of the agreements for capacity, energy, gas transportation and storage, and other fixed payments in 2023, 2022 and 2021 were as follows:
               For the Years Ended December 31,
(Millions of Dollars)202320222021
Con Edison
Astoria Generating Company (a)$40$45$20
Brooklyn Navy Yard (b)134165139
Gas Transportation and Storage (c)372386393
Total$546$596$552
CECONY
Astoria Generating Company (a)$40$45$20
Brooklyn Navy Yard (b)134165139
Gas Transportation and Storage (c)327340347
Total$501$550$506
(a) Capacity purchase agreements with terms ending in 2023 through 2025.
(b) Contract for plant output, which started in 1996 and ends in 2036.
(c) Contracts for various counterparties and terms extending through 2044.