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Derivative Instruments and Hedging Activities - Hedged Volume of Derivative Transactions (Details) | Dec. 31, 2020 gal MMBTU MWh MW
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Electric Energy |
Derivatives, Fair Value [Line Items] |
Notional amount | MWh | 28,102,230
Capacity |
Derivatives, Fair Value [Line Items] |
Notional amount | MW | 47,258
Natural Gas |
Derivatives, Fair Value [Line Items] |
Notional amount | MMBTU | 286,819,910
Refined Fuels |
Derivatives, Fair Value [Line Items] |
Notional amount | gal | 7,728,000
CECONY | Electric Energy |
Derivatives, Fair Value [Line Items] |
Notional amount | MWh | 26,193,800
CECONY | Capacity |
Derivatives, Fair Value [Line Items] |
Notional amount | MW | 35,400
CECONY | Natural Gas |
Derivatives, Fair Value [Line Items] |
Notional amount | MMBTU | 267,380,000
CECONY | Refined Fuels |
Derivatives, Fair Value [Line Items] |
Notional amount | gal | 7,728,000

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