Income Taxes - Schedule of Changes in Valuation Allowance (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Balance at beginning of year	$ (2,595)	$ (2,333)	$ (2,062)
Establishment of new allowances	(266)	(106)	(150)
Net change to existing allowances	(21)	(113)	(151)
Foreign currency translation	148	(43)	30
Balance at end of year	$ (2,734)	$ (2,595)	$ (2,333)