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Derivative Financial Instruments - Carrying Value and Related Fair Value Hedging Adjustments of Liabilities (Detail) - Designated as Hedging Instrument [Member] - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Short-term borrowings [Member]    
Derivatives Fair Value [Line Items]    
Carrying Value $ 496 $ 495
Hedge Basis Adjustments (3) (5)
Long-term borrowings [Member]    
Derivatives Fair Value [Line Items]    
Carrying Value 4,720 4,517
Hedge Basis Adjustments $ (66) $ (345)