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Risk Management Activities - Schedule of Derivative Instruments in Statement of Financial Position, Fair Value (Details) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Derivative asset, current | $ 1 | $ 0
Derivative liability, current | 79 | 269
Collateral posted on derivative | 1,766 |
Price Risk Derivative | Assets From Price Risk Management Activities |  |
Derivatives, Fair Value [Line Items] |  |
Derivative asset, current | 1 | 0
Derivative asset, fair value, gross asset | 2 |
Derivative liability, fair value, gross liability | 1 |
Price Risk Derivative | Other Assets |  |
Derivatives, Fair Value [Line Items] |  |
Derivative asset, noncurrent | 0 | 6
Derivative asset, fair value, gross asset |  | 7
Derivative liability, fair value, gross liability |  | 1
Price Risk Derivative | Liabilities From Price Risk Management Activities |  |
Derivatives, Fair Value [Line Items] |  |
Derivative liability, current | 79 | 269
Derivative asset, fair value, gross asset | 10 | 29
Derivative liability, fair value, gross liability | 1,357 | 421
Collateral posted on derivative | 1,268 | 123
Price Risk Derivative | Other Liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Derivative liability, noncurrent | 45 | 37
Derivative asset, fair value, gross asset | 4 | 10
Derivative liability, fair value, gross liability | 687 | 64
Collateral posted on derivative | $ 638 | $ 17

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