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Fair Value Measurements (Details) - Recurring - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Fair value of assets and liabilities    
Marketable securities $ 6 $ 5
Derivative assets 33 52
Derivative liabilities 27 21
Long-term debt 1,637 1,633
Level 1    
Fair value of assets and liabilities    
Marketable securities 6 5
Derivative assets 31 48
Derivative liabilities 23 17
Long-term debt 0 0
Level 2    
Fair value of assets and liabilities    
Marketable securities 0 0
Derivative assets 2 4
Derivative liabilities 4 4
Long-term debt 1,637 1,633
Level 3    
Fair value of assets and liabilities    
Marketable securities 0 0
Derivative assets 0 0
Derivative liabilities 0 0
Long-term debt $ 0 $ 0