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Commitments and Contingencies - Environmental Loss Contingencies (Details) - Excluding Line 901 Incident - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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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, long-term [Extensible Enumeration] | Other long-term liabilities and deferred credits | Other long-term liabilities and deferred credits
Other current liabilities | $ 15 | $ 10
Other long-term liabilities and deferred credits | 81 | 46
Total | $ 96 | $ 56

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