Income Taxes - Income Tax Expense (Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Current Income Taxes
Federal	$ (6)	$ 7	$ (3)
State	8	113	92
Total current income taxes	2	120	89
Deferred Income Taxes
Federal	245	376	87
State	44	(25)	(83)
Total deferred income taxes	289	351	4
Total income tax expense	$ 291	$ 471	$ 93