Income Tax Expense(Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current:
Federal	$ 1,193	$ 1,468	$ 1,173
State	235	284	252
Total current	1,428	1,752	1,425
Deferred:
Federal	174	88	422
State	(75)	(78)	24
Total deferred	99	10	446
Total	$ 1,527	$ 1,762	$ 1,871