Income Taxes - Income Tax Provision (Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current
Federal	$ (1)	$ 264	$ 37
State	(3)	6	10
Current Income Taxes	(4)	270	47
Deferred
Federal	(178)	381	(1,112)
State	55	47	(220)
Deferred Income Taxes	(123)	428	(1,332)
Total	$ (127)	$ 698	$ (1,285)