Income Taxes - Carryforward and Temporary Differences (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Deferred Tax Assets
Goodwill and intangible assets	$ 827	$ 998
Loss carryforwards (federal, state & capital)	104	134
Loss reserves	84	104
Lease liability	28	30
Accruals	11	16
Other, net	19	20
Total deferred tax assets	1,073	1,302
Deferred Tax Liabilities
MSR amortization and mark-to-market, net	(269)	(240)
Gain/loss on assets, net	(67)	(14)
Right-of-use assets	(24)	(27)
Depreciation and amortization, net	(2)	(19)
Prepaid assets	(1)	(2)
Total deferred tax liabilities	(363)	(302)
Valuation allowance	(7)	(9)
Deferred tax assets, net	$ 703	$ 991