Income Taxes - Schedule of Activity Related to Unrecognized Tax Benefits (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Beginning Balance	$ 639	$ 639
Additions based on tax positions related to the current year	40	30
Additions for tax positions of prior years	63	4
Reductions for tax positions of prior years	(206)	(10)
Settlements	(17)	0
Lapse of applicable statutes of limitations	(15)	(24)
Ending Balance	$ 504	$ 639