Income Taxes - Income Tax Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income tax expense (benefit) at the U.S. federal tax rate of 35%	$ 60	$ (12)	$ 72
Foreign income tax differential	4	(14)	0
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount	21	13	(2)
U.S. permanent book/tax differences	2	(4)	3
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Meals and Entertainment, Amount	1	1	2
Effective Income Tax Rate Reconciliation, Executive Compensation	4	0	1
Impact of intangible asset transfer	15	10	9
Gains/losses on entity liquidations tax impact	(6)	3	2
Effective Income Tax Rate Reconciliation, foreign derived intangible income deduction	3	2	2
Effective Income Tax Rate Reconciliation, Branch Status Change	55	2	(12)
Goodwill impairment	1	0	17
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Research and Development, Amount	(6)	(7)	(5)
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount	(13)	(4)	5
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount	21	(32)	(90)
US Tax Reform, Provisional Tax Expense	13	(12)	4
Effective Income Tax Rate Reconciliation, Change in Foreign Deferred Tax Assets Valuation Allowance, Amount	11	0	(1)
Change in liability for unrecognized tax benefits	0	0	(245)
Other, net	0	1	(1)
Total income tax expense (benefit)	$ 186	$ (53)	$ (273)