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Derivative Financial Instruments (Details 2) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Realized net losses | $ 8 | $ 47 | $ 39
Net derivative losses | $ (6) | $ (5) | $ (100)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Cost of sales | Cost of sales | Cost of sales
Derivatives not designated as cash flow hedges | Natural gas derivatives | Cost of Sales |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Unrealized net (losses) gains | $ (5) | $ 35 | $ 39
Realized net losses | $ (1) | $ (40) | $ (139)

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- Definition Line items represent financial concepts included in a table. 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