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Other Noncurrent Assets and Liabilities - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Noncurrent Assets and Liabilities      
Equity security investments $ 193 $ 191  
Other Nonoperating Income (Expense)      
Noncurrent Assets and Liabilities      
Gain (loss) on equity securities (3) (5) $ (48)
Other Noncurrent Assets      
Noncurrent Assets and Liabilities      
Equity security investments $ 193 $ 191