FAIR VALUE MEASUREMENT - Schedule of Inputs Used in Valuing Residential Mortgage Loans (Details) $ in Thousands	9 Months Ended
Sep. 30, 2017 USD ($)
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted Average Life (Years)	1 year 3 months 1 day
Reverse Mortgage Loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Interest in reverse mortgage loans	70.00%
Performing Loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted Average Life (Years)	5 years 7 months 6 days
Residential Mortgage
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount Rate	6.60%
Weighted Average Life (Years)	4 years 6 months 28 days
Loss Severity	37.30%
Residential Mortgage \| Reverse Mortgage Loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount Rate	7.00%
Weighted Average Life (Years)	4 years 3 months 18 days
Loss Severity	6.20%
Residential Mortgage \| Performing Loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount Rate	7.70%
Weighted Average Life (Years)	5 years 3 months 1 day
Prepayment Rate	4.20%
CDR	2.60%
Loss Severity	41.90%
Residential Mortgage \| Non-Performing Loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount Rate	5.80%
Weighted Average Life (Years)	4 years 16 days
Prepayment Rate	3.40%
CDR	2.90%
Loss Severity	34.00%
Residential Mortgage \| Carrying Value
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Carrying Value	$ 1,374,572
Residential Mortgage \| Carrying Value \| Reverse Mortgage Loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Carrying Value	9,342
Residential Mortgage \| Carrying Value \| Performing Loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Carrying Value	605,007
Residential Mortgage \| Carrying Value \| Non-Performing Loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Carrying Value	760,223
Residential Mortgage \| Fair Value
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	1,433,689
Residential Mortgage \| Fair Value \| Reverse Mortgage Loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	10,748
Residential Mortgage \| Fair Value \| Performing Loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	602,544
Residential Mortgage \| Fair Value \| Non-Performing Loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$ 820,397
Consumer Loan \| Consumer Loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount Rate	9.00%
Weighted Average Life (Years)	3 years 6 months 16 days
Prepayment Rate	22.30%
CDR	6.30%
Loss Severity	86.90%
Consumer Loan \| Carrying Value \| Consumer Loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Carrying Value	$ 1,467,933
Consumer Loan \| Fair Value \| Consumer Loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$ 1,483,223

Interest in reverse mortgage loans

No definition available.

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Namespace Prefix:	nrz_
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Balance Type:	na
Period Type:	duration

- Definition

Weighted average expected timing of the receipt of expected cash flows for this investment.

+ References

No definition available.

+ Details

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Namespace Prefix:	nrz_
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Balance Type:	na
Period Type:	duration

- Definition

The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and allowance for loan losses). This relates to loans not accounted for debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 15
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82894507&loc=d3e13503-111538

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

+ Details

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Period Type:	duration

- Definition

Loss, including interest and principal, incurred on a defaulted security, expressed as a percentage of the original principal balance, used as an input to measure fair value.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Rate at which loans or a loan portfolio are expected to prepay principal balances, used as an input to measure fair value.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of likelihood a loan will not be repaid and instead default, used as an input to measure fair value.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
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- Definition

Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-URI http://asc.fasb.org/subtopic&trid=2196772

+ Details

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- Details

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- Details

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- Details

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