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Fair Value Measurements (Details) - Fair Value, Recurring - USD ($)
$ in Millions
Sep. 30, 2023
Dec. 31, 2022
Fair value of assets and liabilities    
Marketable securities $ 4 $ 3
Derivative assets 40 60
Derivative liabilities 91 64
Long-term debt 1,679 1,733
Level 1    
Fair value of assets and liabilities    
Marketable securities 4 3
Derivative assets 39 49
Derivative liabilities 67 51
Long-term debt 0 0
Level 2    
Fair value of assets and liabilities    
Marketable securities 0 0
Derivative assets 1 11
Derivative liabilities 24 13
Long-term debt 1,679 1,733
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