Income Taxes - Components of Income Tax Expense (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Federal
Current	$ 332	$ 144	$ 588	$ 645
Deferred	88	79	441	261
Federal income tax	420	223	1,029	906
State
Current	100	105	287	214
Deferred	4	22	123	22
State income tax	104	127	410	236
Total income tax provision	$ 524	$ 350	$ 1,439	$ 1,142