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Risk Management Activities - Schedule of Derivative Instruments in Statement of Financial Position, Fair Value (Details) - USD ($) | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Derivative liability, current | $ 22,000,000 | $ 169,000,000
Liabilities From Price Risk Management Activities |  |
Derivatives, Fair Value [Line Items] |  |
Collateral posted on derivative |  | 92,000,000
Other Liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Derivative asset, fair value, gross asset | 1,000,000 | 3,000,000
Derivative liability, fair value, gross liability | 275,000,000 | 606,000,000
Collateral posted on derivative |  | 232,000,000
Price Risk Derivative |  |
Derivatives, Fair Value [Line Items] |  |
Derivative liability, current | 22,000,000 | 169,000,000
Derivative liability, noncurrent | 274,000,000 | 371,000,000
Price Risk Derivative | Other Assets |  |
Derivatives, Fair Value [Line Items] |  |
Derivative asset, fair value, gross asset |  | 26,000,000
Derivative liability, fair value, gross liability |  | $ 287,000,000
Price Risk Derivative | Liabilities From Price Risk Management Activities |  |
Derivatives, Fair Value [Line Items] |  |
Derivative asset, fair value, gross asset | 6,000,000 |
Derivative liability, fair value, gross liability | $ 28,000,000 |

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