Consolidated Statements of Cash Flows - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021		Dec. 31, 2020		Dec. 31, 2019
Operating Activities
Net income		$ 1,454		$ 307		$ 270
Net (loss) income from discontinued operations		(12)		(2)		16
Net income from continuing operations		1,466		309		254
Adjustments to reconcile net income to net cash attributable to operating activities:
Deferred tax expense (benefit)		351		4		(371)
Net gain on mortgage loans held for sale		(2,251)		(2,310)		(1,098)
Provision for servicing and non-servicing reserves		34		22		63
Fair value changes and amortization of mortgage servicing rights		506		1,667		1,117
Fair value changes in MSR related liabilities		(33)		(198)		(164)
Depreciation and amortization for property and equipment and intangible assets		57		73		90
Gain on sale of business		(528)		0		0
Loss on redemption of unsecured senior notes		0		138		0
Other operating activities		60		60		37
Repurchases of forward loan assets out of Ginnie Mae securitizations		(10,156)		(4,822)		(2,895)
Mortgage loans originated and purchased for sale, net of fees		(84,684)		(63,233)		(40,257)
Sales proceeds and loan payment proceeds for mortgage loans held for sale		97,515		67,894		41,948
Changes in assets and liabilities:
Advances and other receivables		(380)		(48)		161
Other assets		41		18		375
Payables and other liabilities		9		(190)		(330)
Net cash attributable to operating activities - continuing operations		2,007		(616)		(1,070)
Net cash attributable to operating activities - discontinued operations		625		947		1,772
Net cash attributable to operating activities		2,632		331		702
Investing Activities
Sale of business, net of cash divested		465		0		0
Acquisitions, net of cash acquired		0		0		(85)
Property and equipment additions, net of disposals		(41)		(57)		(53)
Purchase of forward mortgage servicing rights		(922)		(130)		(547)
Proceeds on sale of forward mortgage servicing rights		61		53		343
Other investing activities		2		0		0
Net cash attributable to investing activities - continuing operations		(435)		(134)		(342)
Net cash attributable to investing activities - discontinued operations		1,627		0		4
Net cash attributable to investing activities		1,192		(134)		(338)
Financing Activities
(Decrease) increase in advance and warehouse facilities		(1,272)		1,861		1,651
Proceeds from issuance of excess spread financing		0		24		542
Settlement and repayment of excess spread financing		(156)		(207)		(246)
Issuance of unsecured senior debt		600		2,100		0
Redemption and repayment of unsecured senior notes and notes payable		0		(2,508)		(394)
Repurchase of common stock		(572)		(58)		0
Retirement of preferred stock		(28)		0		0
Other financing activities		(42)		(55)		(37)
Net cash attributable to financing activities - continuing operations		(1,470)		1,157		1,516
Net cash attributable to financing activities - discontinued operations		(2,226)		(1,053)		(1,829)
Net cash attributable to financing activities		(3,696)		104		(313)
Net increase in cash, cash equivalents and restricted cash		128		301		51
Cash, cash equivalents and restricted cash - beginning of period		913	[1]	612	[1]	561
Cash, cash equivalents and restricted cash - end of period	[1]	1,041		913		612
Supplemental Disclosures of Cash Activities
Cash paid for interest expense		118		206		174
Net cash paid for income taxes		159		76		42
Supplemental Disclosures of Non-cash Investing Activities
Equity consideration received from sale of business		58		0		0
Forward mortgage servicing rights sales price holdback		2		0		49
Purchase of forward mortgage servicing rights		$ 6		$ 5		$ 28

[1] The following table provides a reconciliation of cash, cash equivalents and restricted cash to amount reported within the consolidated balance sheets. December 31,
2021December 31,
2020December 31,
2019Cash and cash equivalents$895 $695 $329 Restricted cash146 135 169 Restricted cash within assets of discontinued operations— 83 114 Total cash, cash equivalents and restricted cash$1,041 $913 $612