Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Taxes [Line Items]
Tax benefit related to partial reversal of valuation allowance		$ 715
Addition of valuation allowance		82
Tax benefit related to recording a loss from continuing operations and income from OCI			$ 138
Tax expense for an updated estimate to tax reserves related to an unrecognized tax benefit			13
Deferred Tax Liabilities, Net	$ 90	90
Net deferred tax asset			11
Valuation allowance on net deferred tax asset	162	162	796
Unrecognized tax benefits	3	3	16	$ 3	$ 35
Total amount of unrecognized tax benefits that, if recognized, would affect effective tax rate	2	2	15
Accrued liabilities, interest on unrecognized tax benefits	2	2	2
Deferred Tax Asset for Capital Losses
Income Taxes [Line Items]
Addition of valuation allowance	82	715
Domestic Country
Income Taxes [Line Items]
Deferred Tax Liabilities, Net	88	88	7
Deferred Tax Liabilities, Valuation Allowance	159	159	793
Foreign
Income Taxes [Line Items]
Deferred Tax Liabilities, Net	2	2
Deferred Tax Liabilities, Valuation Allowance	$ 3	$ 3
Net deferred tax asset			18
Valuation allowance on net deferred tax asset			$ 3