Income Taxes - Summary of Significant Components of Income Tax Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current
Foreign	$ 1	$ 1
Total current income tax expense	84	85	$ 76
Deferred
Foreign		1
Total deferred income tax expense	22	68
Total income tax expense	106	153	76
United States
Current
Federal	69	70	68
State	14	14	8
Deferred
Federal	19	54	3
State	$ 3	$ 13	$ (3)