INCOME TAXES - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
REIT taxable income distribution	100.00%	100.00%	100.00%	100.00%	100.00%
Decrease in income tax expense due to Tax Cuts and Jobs Act	$ 10.1
Decrease in deferred tax liability due to Tax Cuts and Jobs Act	$ 10.1

Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Deferred Tax Liability, Provisional Income Tax (Expense) Benefit

No definition available.

Name:	nrz_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxLiabilityProvisionalIncomeTaxExpenseBenefit
Namespace Prefix:	nrz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration