Derivative Instruments And Hedging Activities - Fair Value of Derivative Instruments (Detail) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Derivatives, Fair Value [Line Items]
Assets	$ 9	$ 58
Liabilities	$ 2,008	$ 1,510
Derivative asset, statement of financial position	Other current assets, Other assets	Other current assets, Other assets
Derivative liability, statement of financial position	Accounts payable and accrued liabilities, Other liabilities	Accounts payable and accrued liabilities, Other liabilities
Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets	$ 0	$ 58
Liabilities	540	195
Designated as Hedging Instrument | Currency Swap | Other assets | Net Investment Hedging
Derivatives, Fair Value [Line Items]
Assets	0	58
Designated as Hedging Instrument | Currency Swap | Accounts payable and accrued liabilities | Net Investment Hedging
Derivatives, Fair Value [Line Items]
Liabilities	0	3
Designated as Hedging Instrument | Currency Swap | Other liabilities | Net Investment Hedging
Derivatives, Fair Value [Line Items]
Liabilities	456	26
Designated as Hedging Instrument | Interest Rate Swap | Other liabilities | Fair Value Hedging
Derivatives, Fair Value [Line Items]
Liabilities	84	166
Not Designated as Accounting Hedges | Foreign Exchange Forward | Other current assets
Derivatives, Fair Value [Line Items]
Assets	9	0
Not Designated as Accounting Hedges | Foreign Exchange Forward | Accounts payable and accrued liabilities
Derivatives, Fair Value [Line Items]
Liabilities	$ 0	$ 21