Income Taxes - Pretax Income and Income Tax Provision (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current:
Federal	$ 913	$ 802	$ 378
State	148	175	138
Foreign	204	132	109
Total current	1,265	1,109	625
Deferred:
Federal	(380)	(339)	(186)
State	(12)	(84)	(106)
Foreign	(119)	(135)	30
Total deferred	(511)	(558)	(262)
Income tax provision	$ 754	$ 551	$ 363