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Financial Instruments - Narrative (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2024
Dec. 31, 2023
Interest rate contracts    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative, aggregate notional value $ 4,136 $ 2,384
Net investment hedge contracts    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative, aggregate notional value 8,033 $ 7,456
Cash flow hedges | Interest rate contracts    
Derivative Instruments, Gain (Loss) [Line Items]    
Expected transfer of gains (net of taxes) for interest rate cash flow hedges to earnings during the next 12 months $ 48  
Hedged forecasted transaction period 4 years 6 months  
Net investment hedges | Net investment hedge contracts    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative, aggregate notional value $ 8,000