EQUITY AND EARNINGS PER SHARE - Outstanding Options by Recipient (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of unexercised options (in shares)	8,498,138
Options exercisable (in shares)	1,918,132
Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of unexercised options (in shares)	6,000	6,000
Stock Options \| Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Date of grant/exercise	Various
Number of unexercised options (in shares)	6,000
Options exercisable (in shares)	6,000
Weighted average exercise price (in dollars per share)	$ 13.99
Intrinsic value of exercisable options	$ 0.0
Stock Options \| Manager \| 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Date of grant/exercise	2012
Number of unexercised options (in shares)	0
Options exercisable (in shares)	0
Weighted average exercise price (in dollars per share)	$ 0.00
Intrinsic value of exercisable options	$ 0.0
Stock Options \| Manager \| 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Date of grant/exercise	2013
Number of unexercised options (in shares)	0
Options exercisable (in shares)	0
Weighted average exercise price (in dollars per share)	$ 0.00
Intrinsic value of exercisable options	$ 0.0
Stock Options \| Manager \| 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Date of grant/exercise	2014
Number of unexercised options (in shares)	0
Options exercisable (in shares)	0
Weighted average exercise price (in dollars per share)	$ 0.00
Intrinsic value of exercisable options	$ 0.0
Stock Options \| Manager \| 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Date of grant/exercise	2015
Number of unexercised options (in shares)	0
Options exercisable (in shares)	0
Weighted average exercise price (in dollars per share)	$ 0.00
Intrinsic value of exercisable options	$ 0.0
Stock Options \| Manager \| 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Date of grant/exercise	2016
Number of unexercised options (in shares)	533,334
Options exercisable (in shares)	200,000
Weighted average exercise price (in dollars per share)	$ 13.70
Intrinsic value of exercisable options	$ 0.1
Stock Options \| Manager \| 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Date of grant/exercise	2017
Number of unexercised options (in shares)	2,638,804
Options exercisable (in shares)	1,130,917
Weighted average exercise price (in dollars per share)	$ 14.50
Intrinsic value of exercisable options	$ 0.0
Stock Options \| Manager \| 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Date of grant/exercise	2018
Number of unexercised options (in shares)	5,320,000
Options exercisable (in shares)	581,215
Weighted average exercise price (in dollars per share)	$ 17.12
Intrinsic value of exercisable options	$ 0.0

Option grant date.

No definition available.

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

- 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

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

- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

+ Details

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

- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_DirectorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_StockOptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=nrz_ManagerOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardDateAxis=nrz_A2012Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardDateAxis=nrz_A2013Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardDateAxis=nrz_A2014Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardDateAxis=nrz_A2015Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardDateAxis=nrz_A2016Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardDateAxis=nrz_A2017Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardDateAxis=nrz_A2018Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: