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Derivative and Financial Instruments - Fair Value Amounts of Derivatives, Balance Sheet Location (Details) - USD ($) $ in Millions | Dec. 31, 2025 | Dec. 31, 2024
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Derivatives, Fair Value [Line Items] |  |
Derivative Asset, Statement of Financial Position [Extensible Enumeration] | Other Assets, Noncurrent, Prepaid Expense and Other Assets, Current |
Commodity | Prepaid expenses and other current assets |  |
Derivatives, Fair Value [Line Items] |  |
Commodity derivative assets | $ 491 | $ 394
Commodity | Other assets |  |
Derivatives, Fair Value [Line Items] |  |
Commodity derivative assets | 113 | 94
Commodity | Other accruals |  |
Derivatives, Fair Value [Line Items] |  |
Commodity derivative liabilities | 438 | 397
Commodity | Other liabilities and deferred credits |  |
Derivatives, Fair Value [Line Items] |  |
Commodity derivative liabilities | $ 100 | $ 83

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