RESIDENTIAL MORTGAGE LOANS - Carrying Value of Mortgage Loans (Details) $ in Thousands	3 Months Ended
Mar. 31, 2021 USD ($)
SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward]
Balance, beginning	$ 5,215,703
Transfer of loans to real estate owned	(8,701)
Balance, ending	5,923,555
Residential Portfolio Segment
SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward]
Originations	27,119,215
Sales	(28,467,064)
Purchases/additional fundings	2,090,474
Proceeds from repayments	(123,234)
Transfer of loans to other assets	1,230
Transfer of loans to real estate owned	(5,926)
Valuation (provision) reversal on loans	15,556
Changes in instrument-specific credit risk	51,184
Other factors	8,990
Residential Mortgage Loans, Held-for-Investment, at Fair Value \| Residential Portfolio Segment
SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward]
Balance, beginning	674,179
Originations	0
Sales	0
Purchases/additional fundings	0
Proceeds from repayments	(26,212)
Transfer of loans to other assets	0
Transfer of loans to real estate owned	(1,441)
Valuation (provision) reversal on loans	0
Changes in instrument-specific credit risk	13,919
Other factors	(3,693)
Balance, ending	656,752
Residential Mortgage Loans, Held-for-Sale \| Acquired Loans, at Lower Cost or Fair Value \| Residential Portfolio Segment
SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward]
Balance, beginning	509,887
Originations	0
Sales	(188,855)
Purchases/additional fundings	0
Proceeds from repayments	(10,194)
Transfer of loans to other assets	199
Transfer of loans to real estate owned	(3,514)
Valuation (provision) reversal on loans	15,556
Changes in instrument-specific credit risk	0
Other factors	0
Balance, ending	323,079
Residential Mortgage Loans, Held-for-Sale \| Acquired Loans \| Residential Portfolio Segment
SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward]
Balance, beginning	4,705,816
Originations	27,119,215
Sales	(28,278,209)
Purchases/additional fundings	2,090,474
Proceeds from repayments	(86,828)
Transfer of loans to other assets	1,031
Transfer of loans to real estate owned	(971)
Valuation (provision) reversal on loans	0
Changes in instrument-specific credit risk	37,265
Other factors	12,683
Balance, ending	5,600,476
Total Residential Mortgage Loans \| Residential Portfolio Segment
SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward]
Balance, beginning	5,889,882
Balance, ending	$ 6,580,307

Allowance for Loan Losses, Net

No definition available.

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

- Definition

Investment in Mortgage Loans on Real Estate, Originations

+ References

No definition available.

+ Details

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

- Definition

Mortgage Loans on Real Estate, Fair Value Adjustment, Credit Risk Evaluation

+ References

No definition available.

+ Details

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

- Definition

Mortgage Loans on Real Estate, Fair Value Adjustment, Other

+ References

No definition available.

+ Details

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

- Definition

Mortgage Loans on Real Estate, Transfer of Loans to Other Assets

+ References

No definition available.

+ Details

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

- Definition

Residential Mortgage Loans, Held-For-Sale

+ References

No definition available.

+ Details

Name:	nrz_ResidentialMortgageLoansHeldForSale
Namespace Prefix:	nrz_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of decrease in investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate, from collection of principal.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Footnote 6
-Subsection 29

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29(Footnote 6))
-URI http://asc.fasb.org/extlink&oid=120402547&loc=d3e617274-123014

+ Details

Name:	srt_MortgageLoansOnRealEstateCollectionsOfPrincipal
Namespace Prefix:	srt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29(Column G))
-URI http://asc.fasb.org/extlink&oid=120402547&loc=d3e617274-123014

+ Details

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

- Definition

Amount of decrease in investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate, from sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29(Footnote 6))
-URI http://asc.fasb.org/extlink&oid=120402547&loc=d3e617274-123014

+ Details

Name:	us-gaap_MortgageLoansOnRealEstateCostOfMortgagesSold
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of increase in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate, from new investment.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29(Footnote 6))
-URI http://asc.fasb.org/extlink&oid=120402547&loc=d3e617274-123014

+ Details

Name:	us-gaap_MortgageLoansOnRealEstateNewMortgageLoans
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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

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

- Definition

Value transferred from mortgage loans to real estate owned (REO) in noncash transactions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4313-108586

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4304-108586

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4332-108586

+ Details

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

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MortgageLoansOnRealEstateLoanTypeAxis=nrz_ResidentialMortgageLoansHeldforInvestmentAtFairValueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MortgageLoansOnRealEstateLoanTypeAxis=nrz_ResidentialMortgageLoansHeldforSaleMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis=nrz_AcquiredLoansHeldForSaleAtLowerCostOrFairValueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis=nrz_AcquiredLoansHeldForSaleAtFairValueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MortgageLoansOnRealEstateLoanTypeAxis=nrz_TotalResidentialMortgageLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: