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Fair Value Measurements - Narrative (Details) MMBTU in Thousands, $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Feb. 22, 2024 MMBTU | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Proved Oil and Gas Properties, Other Property, Plant and Equipment and Other Assets [Abstract] |  |  |  |
Proved oil and gas properties carrying amount |  | $ 59 | $ 146 | $ 27
Assets written down during the period - fair value at end of period |  | 15 | 26 | 7
Pretax impairment charges |  | 44 | 120 | $ 20
Debt Disclosure [Abstract] |  |  |  |
Aggregate principal amount of current and long-term debt |  | 3,640 | 4,890 |
Estimated fair value of debt |  | $ 3,574 | $ 4,740 |
Subsequent Event |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |  |  |
Sales agreement term | 10 years |  |  |
Agreement to sell domestic gas production | MMBTU | 180 |  |  |
Agreement to sell at a price indexed to Brent Crude Oil | MMBTU | 140 |  |  |

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- Definition The expense recorded to reduce the value of property, plant and equipment to estimated fair value when circumstances indicate such property, plant and equipment has been impaired and to reduce the value of oil and gas assets consisting of proved properties as the estimate of future successful production from these properties is reduced. + References No definition available. + Details
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- Definition Net dollar amount capitalized on balance sheet representing an enterprise's interests in proved crude oil (including condensate and natural gas liquids) and/or natural gas properties. + References No definition available. + Details
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