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v3.23.1

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2023 | Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | $ 740,000,000 | $ 874,000,000
Derivative liabilities: | 267,000,000 | 90,000,000
Liabilities transferred out of Level 3 | 7,000,000 | 0
CECONY |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Liabilities transferred out of Level 3 |  | 0
CECONY | Subsidiaries |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 711,000,000 | 663,000,000
Derivative liabilities: | 250,000,000 | 44,000,000
Liabilities transferred out of Level 3 | 7,000,000 |
Netting Adjustment |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | (18,000,000) | (418,000,000)
Derivative liabilities: | (31,000,000) | (182,000,000)
Netting Adjustment | CECONY | Subsidiaries |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | (16,000,000) | (388,000,000)
Derivative liabilities: | (33,000,000) | (180,000,000)
Level 1 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 489,000,000 | 527,000,000
Derivative liabilities: | 28,000,000 | 26,000,000
Level 1 | CECONY | Subsidiaries |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 476,000,000 | 505,000,000
Derivative liabilities: | 27,000,000 | 18,000,000
Level 2 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 269,000,000 | 732,000,000
Derivative liabilities: | 259,000,000 | 228,000,000
Level 2 | CECONY | Subsidiaries |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 251,000,000 | 544,000,000
Derivative liabilities: | 251,000,000 | 198,000,000
Level 3 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 0 | 33,000,000
Derivative liabilities: | 11,000,000 | 18,000,000
Level 3 | CECONY | Subsidiaries |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 0 | 2,000,000
Derivative liabilities: | 5,000,000 | 8,000,000
Commodity |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 170,000,000 | 142,000,000
Derivative liabilities: | 267,000,000 | 54,000,000
Transfer out of level 3 | 10,000,000 |
Commodity | CECONY | Subsidiaries |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 160,000,000 | 131,000,000
Derivative liabilities: | 250,000,000 | 44,000,000
Transfer out of level 3 | 9,000,000 |
Commodity | Netting Adjustment |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | (18,000,000) | (420,000,000)
Derivative liabilities: | (31,000,000) | (184,000,000)
Commodity | Netting Adjustment | CECONY | Subsidiaries |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | (16,000,000) | (388,000,000)
Derivative liabilities: | (33,000,000) | (180,000,000)
Commodity | Level 1 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 34,000,000 | 84,000,000
Derivative liabilities: | 28,000,000 | 18,000,000
Commodity | Level 1 | CECONY | Subsidiaries |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 34,000,000 | 83,000,000
Derivative liabilities: | 27,000,000 | 18,000,000
Commodity | Level 2 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 154,000,000 | 476,000,000
Derivative liabilities: | 259,000,000 | 204,000,000
Commodity | Level 2 | CECONY | Subsidiaries |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 142,000,000 | 434,000,000
Derivative liabilities: | 251,000,000 | 198,000,000
Commodity | Level 3 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 0 | 2,000,000
Derivative liabilities: | 11,000,000 | 16,000,000
Commodity | Level 3 | CECONY | Subsidiaries |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 0 | 2,000,000
Derivative liabilities: | 5,000,000 | 8,000,000
Commodity held for sale |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 0 | 73,000,000
Derivative liabilities: | 0 | 36,000,000
Commodity held for sale | Netting Adjustment |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 0 | 2,000,000
Derivative liabilities: | 0 | 2,000,000
Commodity held for sale | Level 1 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 0 | 6,000,000
Derivative liabilities: | 0 | 8,000,000
Commodity held for sale | Level 2 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 0 | 34,000,000
Derivative liabilities: | 0 | 24,000,000
Commodity held for sale | Level 3 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 0 | 31,000,000
Derivative liabilities: | 0 | 2,000,000
Interest rate swap |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 0 | 106,000,000
Interest rate swap | Netting Adjustment |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 0 | 0
Interest rate swap | Level 1 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 0 | 0
Interest rate swap | Level 2 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 0 | 106,000,000
Interest rate swap | Level 3 |  |
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: | 570,000,000 | 553,000,000
Other | CECONY | Subsidiaries |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 551,000,000 | 532,000,000
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: | 455,000,000 | 437,000,000
Other | Level 1 | CECONY | Subsidiaries |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 442,000,000 | 422,000,000
Other | Level 2 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 115,000,000 | 116,000,000
Other | Level 2 | CECONY | Subsidiaries |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative assets: | 109,000,000 | 110,000,000
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

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