EXCESS MORTGAGE SERVICING RIGHTS ASSETS - Schedule of Activity Related to the Carrying Value of Investments in Excess MSRs (Details) $ in Thousands	6 Months Ended
Jun. 30, 2021 USD ($)
Carrying Value of Investments in Excess MSRs
Beginning balance	$ 4,585,841
Purchases	7,178
Ending balance	4,790,429
Excess MSRs
Carrying Value of Investments in Excess MSRs
Beginning balance	310,938
Purchases	0
Interest income	11,993
Other income	(24)
Proceeds from repayments	(29,775)
Proceeds from sales	(13)
Change in fair value	(8,829)
Ending balance	284,290
Excess MSRs \| Mr. Cooper
Carrying Value of Investments in Excess MSRs
Beginning balance	309,009
Purchases	0
Interest income	11,979
Other income	301
Proceeds from repayments	(29,594)
Proceeds from sales	(13)
Change in fair value	(9,198)
Ending balance	282,484
Excess MSRs \| SLS
Carrying Value of Investments in Excess MSRs
Beginning balance	1,929
Purchases	0
Interest income	14
Other income	(325)
Proceeds from repayments	(181)
Proceeds from sales	0
Change in fair value	369
Ending balance	$ 1,806

Cash flows from repayments of mortgage servicing rights.

No definition available.

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Namespace Prefix:	nrz_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Proceeds From Sale Of Servicing Assets

+ References

No definition available.

+ Details

Name:	nrz_ProceedsFromSaleOfServicingAssets
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Servicing Asset at Fair Value, Interest Income

+ References

No definition available.

+ Details

Name:	nrz_ServicingAssetatFairValueInterestIncome
Namespace Prefix:	nrz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Servicing Asset at Fair Value, Other Income

+ References

No definition available.

+ Details

Name:	nrz_ServicingAssetatFairValueOtherIncome
Namespace Prefix:	nrz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

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.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- 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://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 3
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=125521744&loc=d3e122625-111746

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122492-111745

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=125521744&loc=d3e122625-111746

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 45
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 3
-Subparagraph (a)(4)(ii)
-URI http://asc.fasb.org/extlink&oid=125521744&loc=d3e122625-111746

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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- Details

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- Details

Name:	srt_CounterpartyNameAxis=nrz_SpecializedLoanServicingLLCMember
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