Derivative Financial Instruments - Impact of Derivatives on Other Comprehensive Income (Equity) (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Total gains (losses) on cash flow hedges		$ 194	$ 55	$ (233)
Net changes in cash flow hedges, net of tax	[1]	220	141	(183)
Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Reclassification adjustments for derivative (gains) losses included in net income (interest expense)		$ 26	$ 86	$ 50

[1] See “Note 7 – Derivative Financial Instruments.”