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Financial Instruments - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Interest rate contracts    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative, aggregate notional value $ 4,536 $ 5,336
Net investment hedge contracts    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative, aggregate notional value 9,421 $ 8,647
Cash flow hedges | Interest rate contracts    
Derivative Instruments, Gain (Loss) [Line Items]    
Expected transfer of losses (net of taxes) for interest rate cash flow hedges to earnings during the next 12 months $ (24)  
Hedged forecasted transaction period 4 years  
Net investment hedges | Net investment hedge contracts    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative, aggregate notional value $ 9,400