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Fair Value Measurements - Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis (Details) - Commodity Contract - USD ($) $ in Millions | Jun. 30, 2023 | Dec. 31, 2022
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Natural Gas | Basis Swaps |  |
Financial Assets: |  |
Assets, fair value disclosure | $ 7 | $ 29
Natural Gas | Basis Swaps | Quoted Prices in Active Markets (Level 1) |  |
Financial Assets: |  |
Assets, fair value disclosure | 0 | 0
Natural Gas | Basis Swaps | Significant Other Observable Inputs (Level 2) |  |
Financial Assets: |  |
Assets, fair value disclosure | 7 | 29
Natural Gas | Basis Swaps | Significant Unobservable Inputs (Level 3) |  |
Financial Assets: |  |
Assets, fair value disclosure | 0 | 0
Natural Gas | Price Swaps |  |
Financial Liabilities: |  |
Liabilities, fair value disclosure | 303 | 703
Natural Gas | Price Swaps | Quoted Prices in Active Markets (Level 1) |  |
Financial Liabilities: |  |
Liabilities, fair value disclosure | 0 | 0
Natural Gas | Price Swaps | Significant Other Observable Inputs (Level 2) |  |
Financial Liabilities: |  |
Liabilities, fair value disclosure | 303 | 703
Natural Gas | Price Swaps | Significant Unobservable Inputs (Level 3) |  |
Financial Liabilities: |  |
Liabilities, fair value disclosure | $ 0 | 0
Crude Oil | Price Swaps |  |
Financial Liabilities: |  |
Liabilities, fair value disclosure |  | 190
Crude Oil | Price Swaps | Quoted Prices in Active Markets (Level 1) |  |
Financial Liabilities: |  |
Liabilities, fair value disclosure |  | 0
Crude Oil | Price Swaps | Significant Other Observable Inputs (Level 2) |  |
Financial Liabilities: |  |
Liabilities, fair value disclosure |  | 190
Crude Oil | Price Swaps | Significant Unobservable Inputs (Level 3) |  |
Financial Liabilities: |  |
Liabilities, fair value disclosure |  | $ 0

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