Income Taxes - Provision for Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current:
Federal	$ 477	$ 456	$ 436
State	151	130	132
Foreign	34	43	41
Current tax total	662	629	609
Deferred:
Federal	73	20	(55)
State	2	30	(22)
Foreign	8	(1)
Deferred tax total	83	49	(77)
Income tax expense	$ 745	$ 678	$ 532