Mortgage Servicing - Schedule of Activity Related to MSRs - Fair Value Measurement Method (Details) - USD ($) $ in Thousands		3 Months Ended
Feb. 20, 2020	Mar. 31, 2020	Mar. 31, 2019
Servicing Asset at Fair Value, Amount [Roll Forward]
Beginning balance		$ 1,486,395	$ 1,457,149
Sales and other transfers		(56)	(567)
Recognized on the sale of residential mortgage loans		5,930	1,407
Purchase of MSRs		31,490	54,513
Servicing transfers and adjustments		(264,523)	(3,313)
Changes in fair value:
Changes in valuation inputs or other assumptions		(156,140)	(64,273)
Realization of expected future cash flows and other changes		(52,868)	(44,725)
Ending balance		1,050,228	1,400,191
Fair Value Agency Mortgage Servicing Rights
Servicing Asset at Fair Value, Amount [Roll Forward]
Beginning balance		714,006	865,587
Sales and other transfers		0	(435)
Recognized on the sale of residential mortgage loans		5,930	1,407
Purchase of MSRs		31,490	54,513
Servicing transfers and adjustments		(263,630)	0
Changes in fair value:
Changes in valuation inputs or other assumptions		(166,532)	(64,117)
Realization of expected future cash flows and other changes		(27,037)	(31,263)
Ending balance		294,227	825,692
Fair Value Non-Agency Mortgage Servicing Rights
Servicing Asset at Fair Value, Amount [Roll Forward]
Beginning balance		772,389	591,562
Sales and other transfers		(56)	(132)
Recognized on the sale of residential mortgage loans		0	0
Purchase of MSRs		0	0
Servicing transfers and adjustments		(893)	(3,313)
Changes in fair value:
Changes in valuation inputs or other assumptions		10,392	(156)
Realization of expected future cash flows and other changes		(25,831)	(13,462)
Ending balance		756,001	$ 574,499
New Residential Investment Corp
Servicing Asset at Fair Value, Amount [Roll Forward]
Beginning balance		915,148
Servicing transfers and adjustments	$ 263,700
Changes in fair value:
Ending balance		$ 591,700

Servicing assets at fair value, additions recognized from mortgage sales.

No definition available.

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- Definition

The value of new servicing assets, subsequently measured at fair value, acquired or created during the current period through purchases or from transfers of financial assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 3
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=116651436&loc=d3e122625-111746

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- Definition

Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 45
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-URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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Amount of increase (decrease) in fair value from changes in the inputs, assumptions, or model used to calculate the fair value of the contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Decrease in servicing assets subsequently measured at fair value resulting from conveyance of servicing rights to unrelated parties.

+ References

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Amount of increase (decrease) from changes in fair value classified as other for a contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 860
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Amount of increase (decrease) in fair value from changes classified as other for a contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

+ References

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