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Derivative and Other Financial Instruments - Impact on OCI from Changes in Derivative Fair Value (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Derivative [Line Items]    
Amount of gain / (loss) recognized in AOCI $ (52) $ 32
Foreign exchange    
Derivative [Line Items]    
Amount of gain / (loss) recognized in AOCI $ (33) $ 32