Consolidated Statements of Cash Flows - USD ($) $ in Millions		5 Months Ended		7 Months Ended	12 Months Ended
		Dec. 31, 2018		Jul. 31, 2018	Dec. 31, 2020		Dec. 31, 2019
Operating Activities
Net income		$ 884		$ 154	$ 307		$ 270
Adjustments to reconcile net income to net cash attributable to operating activities:
Deferred tax expense (benefit)		(1,021)		63	3		(366)
Net gain on mortgage loans held for sale		(176)		(295)	(2,310)		(1,098)
Interest income on reverse mortgage loans		(206)		(274)	(200)		(307)
Provision for servicing and non-servicing reserves		38		70	22		66
Fair value changes and amortization/accretion of mortgage servicing rights/liabilities		225		(177)	1,576		1,005
Fair value changes in MSR related liabilities		11		97	(198)		(164)
Amortization of premiums, net of discount accretion		9		8	57		(32)
Depreciation and amortization for property and equipment and intangible assets		39		33	74		91
Share-based compensation		2		17	22		18
Loss on redemption of unsecured senior notes		0		0	138		0
Other loss (gain)		(2)		53	22		10
Repurchases of forward loan assets out of Ginnie Mae securitizations		(527)		(544)	(4,822)		(2,895)
Mortgage loans originated and purchased for sale, net of fees		(8,888)		(12,328)	(63,233)		(40,257)
Sales proceeds and loan payment proceeds for mortgage loans held for sale and held for investment		9,399		13,392	67,855		41,948
Changes in assets and liabilities:
Advances and other receivables		44		377	23		224
Reverse mortgage interests		1,544		1,601	1,293		2,192
Other assets		(7)		(41)	62		376
Payables and other liabilities		(117)		88	(360)		(379)
Net cash attributable to operating activities		1,251		2,294	331		702
Investing Activities
Acquisitions, net of cash acquired		(33)		0	0		(85)
Property and equipment additions, net of disposals		(15)		(40)	(57)		(49)
Purchase of forward mortgage servicing rights		(307)		(134)	(130)		(547)
Proceeds on sale of forward mortgage servicing rights		105		0	53		343
Other investing activities		0		12	0		0
Net cash attributable to investing activities		(250)		(162)	(134)		(338)
Financing Activities
Increases (decrease) in advance and warehouse facilities		(306)		(890)	1,776		1,518
Proceeds from issuance and sale of HECM securitizations		343		759	516		771
Repayment of HECM securitizations		(374)		(448)	(565)		(870)
Proceeds from issuance of participating interest financing in reverse mortgage interests		112		208	181		277
Repayment of participating interest financing in reverse mortgage interests		(943)		(1,599)	(1,096)		(1,868)
Proceeds from issuance of excess spread financing		255		70	24		542
Settlement and repayment of excess spread financing		(115)		(108)	(207)		(246)
Issuance of unsecured senior debt		0		0	2,100		0
Redemption and repayment of unsecured senior notes and notes payable		(1,030)		(62)	(2,508)		(394)
Repurchase of common stock		0		0	(58)		0
Debt financing costs		(2)		(24)	(53)		(8)
Other financing activities		(3)		(17)	(6)		(35)
Net cash attributable to financing activities		(2,063)		(2,111)	104		(313)
Net increase (decrease) in cash, cash equivalents and restricted cash		(1,062)		21	301		51
Cash, cash equivalents and restricted cash - beginning of period		596	[1]	575	612	[1]	561	[1]
Cash, cash equivalents and restricted cash - end of period	[1]	561		596	913		612
Supplemental Disclosures of Cash Activities
Cash paid for interest expense		283		417	206		174
Net cash paid (refunded) for income taxes		(37)		36	76		42
Supplemental Disclosures of Non-cash Investing Activities
Forward mortgage servicing rights sales price holdback		0		0	0		49
Purchase of forward mortgage servicing rights		$ 0		$ 0	$ 5		$ 28

[1] The following table provides a reconciliation of cash, cash equivalents and restricted cash to amount reported within the consolidated balance sheets. SuccessorPredecessorDecember 31,
2020December 31,
2019December 31,
2018July 31,
2018Cash and cash equivalents$695 $329 $242 $166 Restricted cash218 283 319 430 Total cash, cash equivalents and restricted cash$913 $612 $561 $596