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Commitments and Contingencies - Schedule of Environmental Loss Contingencies (Details) - Excluding Line 901 Incident - USD ($) $ in Millions | Jun. 30, 2025 | Dec. 31, 2024
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Loss Contingencies [Line Items] |  |
Estimated undiscounted reserve for environmental liabilities, short-term [Extensible Enumeration] | Other current liabilities | Other current liabilities
Estimated undiscounted reserve for environmental liabilities, short-term | $ 7 | $ 11
Estimated undiscounted reserve for environmental liabilities, long-term [Extensible Enumeration] | Other long-term liabilities and deferred credits | Other long-term liabilities and deferred credits
Estimated undiscounted reserve for environmental liabilities, long-term | $ 74 | $ 69
Estimated undiscounted reserve for environmental liabilities | $ 81 | $ 80

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