Derivative Instruments and Hedging Activities - Schedule of Net Notional Volume Buy/(Sell) of the Company’s Open Derivative Transactions Broken Out by Commodity (Details) $ in Millions |
9 Months Ended | 12 Months Ended |
|---|---|---|
|
Sep. 30, 2024
USD ($)
MWh
BTU
|
Dec. 31, 2023
USD ($)
MWh
BTU
|
|
| Long | Interest | ||
| Derivatives, Fair Value [Line Items] | ||
| Derivative, notional amount | $ | $ 1,711 | $ 2,467 |
| Heat Rate Call Option Commodity Contracts | Short | Power | ||
| Derivatives, Fair Value [Line Items] | ||
| Derivative nonmonetary notional amount (energy measure) | MWh | 18 | 23 |
| Heat Rate Call Option Commodity Contracts | Short | Natural Gas | ||
| Derivatives, Fair Value [Line Items] | ||
| Derivative nonmonetary notional amount (energy measure) | BTU | 13 | 17 |