Income Taxes - Schedule of Provision for Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Current, Federal	$ 1,202	$ 1,118	$ 1,222
Current, State	212	213	206
Current, Foreign	20	3	18
Deferred, Federal	394	241	261
Deferred, State	31	21	27
Deferred, Foreign	7	19	12
Provision for income taxes	$ 1,866	$ 1,615	$ 1,746