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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, 2022 | Dec. 31, 2021
--- | --- | ---
Natural Gas | Basis Swaps |  |
Financial Assets: |  |
Assets, fair value disclosure | $ 14 | $ 2
Financial Liabilities: |  |
Liabilities, fair value disclosure |  | 1
Natural Gas | Basis Swaps | Quoted Prices in Active Markets (Level 1) |  |
Financial Assets: |  |
Assets, fair value disclosure | 0 | 0
Financial Liabilities: |  |
Liabilities, fair value disclosure |  | 0
Natural Gas | Basis Swaps | Significant Other Observable Inputs (Level 2) |  |
Financial Assets: |  |
Assets, fair value disclosure | 14 | 2
Financial Liabilities: |  |
Liabilities, fair value disclosure |  | 1
Natural Gas | Basis Swaps | Significant Unobservable Inputs (Level 3) |  |
Financial Assets: |  |
Assets, fair value disclosure | 0 | 0
Financial Liabilities: |  |
Liabilities, fair value disclosure |  | 0
Natural Gas | Price Swaps |  |
Financial Assets: |  |
Assets, fair value disclosure |  | 29
Financial Liabilities: |  |
Liabilities, fair value disclosure | 948 | 121
Natural Gas | Price Swaps | Quoted Prices in Active Markets (Level 1) |  |
Financial Assets: |  |
Assets, fair value disclosure |  | 0
Financial Liabilities: |  |
Liabilities, fair value disclosure | 0 | 0
Natural Gas | Price Swaps | Significant Other Observable Inputs (Level 2) |  |
Financial Assets: |  |
Assets, fair value disclosure |  | 29
Financial Liabilities: |  |
Liabilities, fair value disclosure | 948 | 121
Natural Gas | Price Swaps | Significant Unobservable Inputs (Level 3) |  |
Financial Assets: |  |
Assets, fair value disclosure |  | 0
Financial Liabilities: |  |
Liabilities, fair value disclosure | 0 | 0
Crude Oil | Price Swaps |  |
Financial Assets: |  |
Assets, fair value disclosure | 2 | 15
Financial Liabilities: |  |
Liabilities, fair value disclosure | 1,040 | 340
Crude Oil | Price Swaps | Quoted Prices in Active Markets (Level 1) |  |
Financial Assets: |  |
Assets, fair value disclosure | 0 | 0
Financial Liabilities: |  |
Liabilities, fair value disclosure | 0 | 0
Crude Oil | Price Swaps | Significant Other Observable Inputs (Level 2) |  |
Financial Assets: |  |
Assets, fair value disclosure | 2 | 15
Financial Liabilities: |  |
Liabilities, fair value disclosure | 1,040 | 340
Crude Oil | Price Swaps | Significant Unobservable Inputs (Level 3) |  |
Financial Assets: |  |
Assets, fair value disclosure | 0 | 0
Financial Liabilities: |  |
Liabilities, fair value disclosure | 0 | 0
Crude Oil | Roll Differential Swap |  |
Financial Liabilities: |  |
Liabilities, fair value disclosure | 57 | 24
Crude Oil | Roll Differential Swap | Quoted Prices in Active Markets (Level 1) |  |
Financial Liabilities: |  |
Liabilities, fair value disclosure | 0 | 0
Crude Oil | Roll Differential Swap | Significant Other Observable Inputs (Level 2) |  |
Financial Liabilities: |  |
Liabilities, fair value disclosure | 57 | 24
Crude Oil | Roll Differential Swap | Significant Unobservable Inputs (Level 3) |  |
Financial Liabilities: |  |
Liabilities, fair value disclosure | $ 0 | $ 0

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