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Financial and Derivative Instruments - Fair Value of Derivatives Not Designated as Hedging Instruments (Details) - Commodity - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
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Consolidated Balance Sheet: Fair Value of Derivatives not Designated as Hedging Instruments |  |
Total Assets at Fair Value | $ 185 | $ 137
Total Liabilities at Fair Value | 158 | 153
Accounts and notes receivable, net |  |
Consolidated Balance Sheet: Fair Value of Derivatives not Designated as Hedging Instruments |  |
Total Assets at Fair Value | 91 | 122
Long-term receivables, net |  |
Consolidated Balance Sheet: Fair Value of Derivatives not Designated as Hedging Instruments |  |
Total Assets at Fair Value | 94 | 15
Accounts payable |  |
Consolidated Balance Sheet: Fair Value of Derivatives not Designated as Hedging Instruments |  |
Total Liabilities at Fair Value | 155 | 127
Deferred credits and other noncurrent obligations |  |
Consolidated Balance Sheet: Fair Value of Derivatives not Designated as Hedging Instruments |  |
Total Liabilities at Fair Value | $ 3 | $ 26

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