INVESTMENTS IN MORTGAGE SERVICING RIGHTS AND MORTGAGE SERVICING RIGHTS FINANCING RECEIVABLES - Rollforward of Carrying Value of Investments In MSRs (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Mortgage Servicing Rights [Roll Forward]
Beginning balance	$ 598,728
Proceeds from sales	(5,776)	$ 0	$ 0
Ending balance	1,644,504	598,728
MSRs
Mortgage Servicing Rights [Roll Forward]
Beginning balance	1,735,504	659,483
Purchases	1,042,933	1,143,693
Transfer in (out)	124,652
Acquisitions	151,312
Originations	35,311
Proceeds from sales	5,776
Amortization of servicing rights	(256,915)	(223,167)	(15,354)
Change in valuation inputs and assumptions	68,587	155,495	103,679
Change in valuation inputs and assumptions	61,149
(Gain)/loss on sales	(2,917)	0	0
Ending balance	2,884,100	1,735,504	659,483
Mortgage Servicing Rights [Roll Forward]
Purchases	1,042,933	1,143,693
Amortization of servicing rights	(256,915)	(223,167)	(15,354)
Amortization of servicing rights	(258,068)
Change in valuation inputs and assumptions	68,587	155,495	103,679
Mortgage Servicing Rights Financing Receivable \| MSRs
Mortgage Servicing Rights [Roll Forward]
Beginning balance	598,728
Ending balance	1,644,504	598,728
Mortgage Servicing Rights Financing Receivable \| New Residential Mortgage LLC \| MSRs
Mortgage Servicing Rights [Roll Forward]
Purchases	128,357	467,884
Transfer in (out)	(124,652)
Amortization of servicing rights	(197,703)	(43,190)
Change in valuation inputs and assumptions	(230,036)	(109,584)
(Gain)/loss on sales	(783)	0
Mortgage Servicing Rights [Roll Forward]
Beginning balance	598,728	0
Purchases	128,357	467,884
Ocwen Transaction	1,017,993	64,450
Proceeds from sales	(7,472)
Amortization of servicing rights	(197,703)	(43,190)
Change in valuation inputs and assumptions	(230,036)	(109,584)
Ending balance	1,644,504	$ 598,728	$ 0
New Penn \| MSRs
Mortgage Servicing Rights [Roll Forward]
Acquisitions	$ 48,300

Amortization Of Mortgage Servicing Rights (MSRs), Excluding Excess Spread Financing

No definition available.

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

- Definition

Gain (Loss) On Sale Of Mortgage Servicing Rights Financing Receivables

+ References

No definition available.

+ Details

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

- Definition

Mortgage Servicing Rights, Additional Transactions

+ References

No definition available.

+ Details

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

- Definition

Mortgage Servicing Rights Financing Receivable [Roll Forward]

+ References

No definition available.

+ Details

Name:	nrz_MortgageServicingRightsFinancingReceivableRollForward
Namespace Prefix:	nrz_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Mortgage Servicing Rights, Financing Receivable, at Fair Value

+ References

No definition available.

+ Details

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

- Definition

Mortgage Servicing Rights

+ References

No definition available.

+ Details

Name:	nrz_MortgageServicingRightsRollForward
Namespace Prefix:	nrz_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Proceeds From Sale Of Servicing Assets

+ References

No definition available.

+ Details

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

- Definition

Realized Gain (Loss) On Sale Of Servicing Asset

+ References

No definition available.

+ Details

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

- Definition

Servicing Asset at Fair Value, Changes in Fair Value Resulting from Changes in Valuation Inputs or Changes in Assumptions, Excluding Excess Spread Financing

+ References

No definition available.

+ Details

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

- Definition

Servicing Assets At Fair Value, Acquisitions

+ References

No definition available.

+ Details

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

- Definition

Servicing Assets At Fair Value, Originations

+ References

No definition available.

+ Details

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

- Definition

Servicing Assets At Fair Value, Transfers

+ References

No definition available.

+ Details

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

- Definition

The periodic amortization (in proportion to and over the period of estimated net servicing income or loss) of capitalized servicing rights, which contractually entitle the servicer to receive fees and ancillary revenues for performing billing, collection, disbursement and recordkeeping services in connection with a mortgage portfolio. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 4
-Subparagraph (a)(4)
-URI http://asc.fasb.org/extlink&oid=68078379&loc=d3e122739-111746

+ Details

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

- Definition

The cash inflow from the sale of servicing rights, which contractually entitle the servicer to receive fees and ancillary revenues for performing billing, collection, disbursement and recordkeeping services in connection with a mortgage portfolio. Rights may be obtained via (1) acquisition or assumption of a servicing obligation that does not relate to financial assets of the servicer or its consolidated affiliates; or (2) by originating mortgage loans and then (a) transferring the loans to a Variable Interest Entity (VIE) in a transaction that meets the necessary transfer and classification requirements, or (b) transferring the loans in a transaction that meets the requirements for sale accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 25
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=7524895&loc=d3e120260-111741

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585

+ Details

Name:	us-gaap_ProceedsFromSaleOfMortgageServicingRightsMSR
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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://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=68078379&loc=d3e122625-111746

+ Details

Name:	us-gaap_ServicingAssetAtFairValueAdditions
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
-URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=68078379&loc=d3e122625-111746

+ Details

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

- Definition

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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 3
-Subparagraph (a)(4)(i)
-URI http://asc.fasb.org/extlink&oid=68078379&loc=d3e122625-111746

+ Details

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

- Details

Name:	invest_InvestmentAxis=nrz_MortgageServicingRightsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=nrz_MortgageServicingRightsFinancingReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=nrz_NewResidentialMortgageLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=nrz_NewPennMortgageCorporationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: