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Stock-Based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant	5,305,407		5,305,407
Shares granted			3,085,194	3,045,949
Shares granted, weighted average grant date fair value			$ 11.63	$ 11.16
Expense recognized under 401(K) plan	$ 1	$ 3	$ 1	$ 3
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted			3,085,194
Shares granted, weighted average grant date fair value			$ 11.63
Compensation and benefits expense	7	7	$ 14	$ 15
Unrecognized compensation cost relating to unvested restricted stock	73		$ 73
Unrecognized compensation cost relating to unvested restricted stock, recognition period (in years)			3 years 4 months 24 days
Restricted Stock \| Share-based Payment Arrangement, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted, vesting period			1 year	1 year
Restricted Stock \| Share-based Payment Arrangement, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted, vesting period			5 years	5 years
Performance-Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted			473,211
Compensation and benefits expense	1	$ 1	$ 1	$ 1
Unrecognized compensation cost relating to unvested restricted stock	$ 6		$ 6
Unrecognized compensation cost relating to unvested restricted stock, recognition period (in years)			1 year 10 months 24 days