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Derivative Instruments and Hedging Activities - Hedged Volume of Derivative Transactions (Details) | Mar. 31, 2021 MMBTU MWh MW gal
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Electric Energy |
Derivatives, Fair Value [Line Items] |
Notional amount | MWh | 24,921,520
Capacity |
Derivatives, Fair Value [Line Items] |
Notional amount | MW | 47,381
Natural Gas |
Derivatives, Fair Value [Line Items] |
Notional amount | MMBTU | 259,569,793
Refined Fuels |
Derivatives, Fair Value [Line Items] |
Notional amount | gal | 6,720,000
CECONY | Electric Energy |
Derivatives, Fair Value [Line Items] |
Notional amount | MWh | 22,991,350
CECONY | Capacity |
Derivatives, Fair Value [Line Items] |
Notional amount | MW | 33,000
CECONY | Natural Gas |
Derivatives, Fair Value [Line Items] |
Notional amount | MMBTU | 241,610,000
CECONY | Refined Fuels |
Derivatives, Fair Value [Line Items] |
Notional amount | gal | 6,720,000

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