Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
Federal	$ 209	$ 281	$ 204
State	31	26	12
Foreign	0	0	9
Total current	240	307	225
Deferred:
Federal	(17)	(13)	5
State	(7)	(7)	6
Foreign	0	1	(1)
Total deferred	(24)	(19)	10
Income tax expense	$ 216	$ 288	$ 235

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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