Financial Instruments, Hedging Activities and Fair Value Measurements (Fair Value, Cash Flow and Net Investment Hedges) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Fair Value Hedging
Derivatives, Fair Value [Line Items]
Gain (Loss) Recognized Amount	$ (3)	$ (10)	$ (10)
Fair Value Hedging | Foreign Currency Contracts
Derivatives, Fair Value [Line Items]
Gain (Loss) Recognized Amount	(3)	(10)	(10)
Net Investment Hedging
Derivatives, Fair Value [Line Items]
Derivative financial instruments	(572)	237	(104)
Gain (Loss) Recognized Amount	8	9	12
Net Investment Hedging | Currency Swap
Derivatives, Fair Value [Line Items]
Derivative financial instruments	(39)	20	(15)
Gain (Loss) Recognized Amount	8	9	12
Net Investment Hedging | Other Foreign Currency Denominated Debt
Derivatives, Fair Value [Line Items]
Derivative financial instruments	(533)	217	(89)
Economic Hedging | Foreign Currency Contracts
Derivatives, Fair Value [Line Items]
Gain (Loss) Recognized Amount	$ 86	$ 43	$ 49
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)