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Derivative Instruments And Hedging Activities - Cumulative Amount of Unrecognized Hedge Losses Recorded in AOCI (Detail) - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Derivative [Line Items]    
Cumulative Gains (Losses), net of tax $ (538) $ (638)
Designated as Hedging Instrument    
Derivative [Line Items]    
Cumulative Gains (Losses), net of tax (255) 233
Net Investment Hedging | Designated as Hedging Instrument    
Derivative [Line Items]    
Cumulative Gains (Losses), net of tax (214) 275
Net Investment Hedging | Cross currency swaps | Designated as Hedging Instrument    
Derivative [Line Items]    
Cumulative Gains (Losses), net of tax (181) 178
Net Investment Hedging | FX forwards | Designated as Hedging Instrument    
Derivative [Line Items]    
Cumulative Gains (Losses), net of tax 29 29
Net Investment Hedging | Long-term debt | Designated as Hedging Instrument    
Derivative [Line Items]    
Cumulative Gains (Losses), net of tax (62) 68
Cash Flow Hedging | Designated as Hedging Instrument    
Derivative [Line Items]    
Cumulative Gains (Losses), net of tax (41) (42)
Cash Flow Hedging | Interest rate contracts | Designated as Hedging Instrument    
Derivative [Line Items]    
Cumulative Gains (Losses), net of tax (41) (43)
Cash Flow Hedging | Cross currency swaps | Designated as Hedging Instrument    
Derivative [Line Items]    
Cumulative Gains (Losses), net of tax $ 0 $ 1