Derivative Instruments And Hedging Activities - Cumulative Amount of Unrecognized Hedge Losses Recorded in AOCI (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Derivative [Line Items]
Cumulative Gains/(Losses), net of tax	$ (652)	$ (643)
Designated as Hedging Instrument
Derivative [Line Items]
Cumulative Gains/(Losses), net of tax	149	140
Net Investment Hedging | Designated as Hedging Instrument
Derivative [Line Items]
Cumulative Gains/(Losses), net of tax	193	185
Net Investment Hedging | Cross currency swaps | Designated as Hedging Instrument
Derivative [Line Items]
Cumulative Gains/(Losses), net of tax	118	118
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	46	38
Cash Flow Hedging | Designated as Hedging Instrument
Derivative [Line Items]
Cumulative Gains/(Losses), net of tax	(44)	(45)
Cash Flow Hedging | Cross currency swaps | Designated as Hedging Instrument
Derivative [Line Items]
Cumulative Gains/(Losses), net of tax	1	2
Cash Flow Hedging | Interest rate contracts | Designated as Hedging Instrument
Derivative [Line Items]
Cumulative Gains/(Losses), net of tax	$ (45)	$ (47)