SEGMENT REPORTING - Segment Financial Information (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Servicing fee revenue, net and interest income from MSRs and MSR financing receivables		$ 456,400	$ 348,284
Change in fair value of MSRs and MSR financing receivables (includes realization of cash flows of $(200,325) and $(339,670), respectively)		575,393	192,274
Servicing revenue, net		1,031,793	540,558
Interest income		225,413	200,947
Gain on originated residential mortgage loans, held-for-sale, net		471,996	403,448
Total revenues		1,729,202	1,144,953
Interest expense and warehouse line fees		138,833	118,905
G&A and other		664,046	384,667
Total operating expenses		802,879	503,572
Change in fair value of investments		(147,119)	(239,788)
Gain (loss) on settlement of investments, net		61,184	(11,992)
Other income (loss), net		56,072	(9,613)
Total other income (loss)		(29,863)	(261,393)
Impairment		3,740	(19,607)
Income Before Income Taxes		892,720	399,595
Income tax expense (benefit)		202,789	98,259
Net income (loss)		689,931	301,336
Noncontrolling interests in income (loss) of consolidated subsidiaries		5,609	9,394
Dividends on preferred stock		22,461	14,358
Net income (loss) attributable to common stockholders - basic		661,861	277,584
Investments		28,903,572
Cash and cash equivalents		1,671,177
Restricted cash		295,037
Other assets		6,913,562
Goodwill (Note 15)		85,199		$ 85,199
Total assets		37,868,547		39,742,190
Debt		27,105,196
Other liabilities		3,578,639
Total liabilities		30,683,835		33,072,810
Total equity		7,184,712	5,621,813	6,669,380	$ 5,429,684
Noncontrolling interests in equity of consolidated subsidiaries	[1]	62,078		65,348
Total New Residential stockholders’ equity		7,122,634		6,604,032
Investments in equity method investees		93,129
Origination
Segment Reporting Information [Line Items]
Investments		4,967,437
Cash and cash equivalents		609,337
Restricted cash		47,166
Other assets		869,977
Goodwill (Note 15)		11,836		11,836
Total assets		6,505,753
Debt		4,795,869
Other liabilities		503,738
Total liabilities		5,299,607
Total equity		1,206,146
Noncontrolling interests in equity of consolidated subsidiaries		13,334
Total New Residential stockholders’ equity		1,192,812
Investments in equity method investees		0
Servicing
Segment Reporting Information [Line Items]
Servicing revenue, net		846,375	366,904
Investments		6,666,098
Cash and cash equivalents		278,059
Restricted cash		68,090
Other assets		2,671,819
Goodwill (Note 15)		12,540		12,540
Total assets		9,696,606
Debt		4,621,279
Other liabilities		2,201,283
Total liabilities		6,822,562
Total equity		2,874,044
Noncontrolling interests in equity of consolidated subsidiaries		0
Total New Residential stockholders’ equity		2,874,044
Investments in equity method investees		0
MSR Related Investments
Segment Reporting Information [Line Items]
Investments		2,835,711
Cash and cash equivalents		269,187
Restricted cash		62,224
Other assets		2,143,253
Goodwill (Note 15)		5,092		$ 5,092
Total assets		5,315,467
Debt		3,433,522
Other liabilities		364,851
Total liabilities		3,798,373
Total equity		1,517,094
Noncontrolling interests in equity of consolidated subsidiaries		9,999
Total New Residential stockholders’ equity		1,507,095
Investments in equity method investees		93,129
Origination and Servicing
Segment Reporting Information [Line Items]
Servicing fee revenue, net and interest income from MSRs and MSR financing receivables		456,400	348,284
Change in fair value of MSRs and MSR financing receivables (includes realization of cash flows of $(200,325) and $(339,670), respectively)		575,393	192,274
Servicing revenue, net		1,031,793	540,558
Interest income		82,426	49,309
Gain on originated residential mortgage loans, held-for-sale, net		471,430	376,902
Total revenues		1,585,649	966,769
Interest expense and warehouse line fees		89,506	69,965
G&A and other		589,548	335,654
Total operating expenses		679,054	405,619
Change in fair value of investments		(1,441)	(1,824)
Gain (loss) on settlement of investments, net		(2,514)	(13,077)
Other income (loss), net		31,919	8,535
Total other income (loss)		27,964	(6,366)
Impairment		0	0
Income Before Income Taxes		934,559	554,784
Income tax expense (benefit)		199,095	82,897
Net income (loss)		735,464	471,887
Noncontrolling interests in income (loss) of consolidated subsidiaries		635	4,833
Dividends on preferred stock		0	0
Net income (loss) attributable to common stockholders - basic		734,829	467,054
Investments		14,469,246
Cash and cash equivalents		1,156,583
Restricted cash		177,480
Other assets		5,685,049
Goodwill (Note 15)		29,468
Total assets		21,517,826
Debt		12,850,670
Other liabilities		3,069,872
Total liabilities		15,920,542
Total equity		5,597,284
Noncontrolling interests in equity of consolidated subsidiaries		23,333
Total New Residential stockholders’ equity		5,573,951
Investments in equity method investees		93,129
Residential Securities, Properties and Loans | Real Estate Securities
Segment Reporting Information [Line Items]
Servicing fee revenue, net and interest income from MSRs and MSR financing receivables		0	0
Change in fair value of MSRs and MSR financing receivables (includes realization of cash flows of $(200,325) and $(339,670), respectively)		0	0
Servicing revenue, net		0	0
Interest income		56,349	89,850
Gain on originated residential mortgage loans, held-for-sale, net		0	13,398
Total revenues		56,349	103,248
Interest expense and warehouse line fees		9,029	15,720
G&A and other		772	1,156
Total operating expenses		9,801	16,876
Change in fair value of investments		(125,949)	(292,134)
Gain (loss) on settlement of investments, net		49,420	(28,356)
Other income (loss), net		(1,889)	(1,686)
Total other income (loss)		(78,418)	(322,176)
Impairment		711	(894)
Income Before Income Taxes		(32,581)	(234,910)
Income tax expense (benefit)		0	0
Net income (loss)		(32,581)	(234,910)
Noncontrolling interests in income (loss) of consolidated subsidiaries		0	0
Dividends on preferred stock		0	0
Net income (loss) attributable to common stockholders - basic		(32,581)	(234,910)
Investments		9,509,930
Cash and cash equivalents		301,454
Restricted cash		11,308
Other assets		713,256
Goodwill (Note 15)		0
Total assets		10,535,948
Debt		9,485,486
Other liabilities		7,346
Total liabilities		9,492,832
Total equity		1,043,116
Noncontrolling interests in equity of consolidated subsidiaries		0
Total New Residential stockholders’ equity		1,043,116
Investments in equity method investees		0
Residential Securities, Properties and Loans | Properties and Residential Mortgage Loans
Segment Reporting Information [Line Items]
Servicing fee revenue, net and interest income from MSRs and MSR financing receivables		0	0
Change in fair value of MSRs and MSR financing receivables (includes realization of cash flows of $(200,325) and $(339,670), respectively)		0	0
Servicing revenue, net		0	0
Interest income		26,989	36,322
Gain on originated residential mortgage loans, held-for-sale, net		566	13,148
Total revenues		27,555	49,470
Interest expense and warehouse line fees		20,868	21,276
G&A and other		23,434	17,686
Total operating expenses		44,302	38,962
Change in fair value of investments		(32,748)	60,174
Gain (loss) on settlement of investments, net		44,912	29,441
Other income (loss), net		17,345	(13,626)
Total other income (loss)		29,509	75,989
Impairment		3,029	(18,713)
Income Before Income Taxes		9,733	105,210
Income tax expense (benefit)		3,657	15,303
Net income (loss)		6,076	89,907
Noncontrolling interests in income (loss) of consolidated subsidiaries		0	0
Dividends on preferred stock		0	0
Net income (loss) attributable to common stockholders - basic		6,076	89,907
Investments		2,791,926
Cash and cash equivalents		2,900
Restricted cash		1,591
Other assets		165,379
Goodwill (Note 15)		0
Total assets		2,961,796
Debt		2,331,373
Other liabilities		310,112
Total liabilities		2,641,485
Total equity		320,311
Noncontrolling interests in equity of consolidated subsidiaries		0
Total New Residential stockholders’ equity		320,311
Investments in equity method investees		0
Consumer Loans
Segment Reporting Information [Line Items]
Servicing fee revenue, net and interest income from MSRs and MSR financing receivables		0	0
Change in fair value of MSRs and MSR financing receivables (includes realization of cash flows of $(200,325) and $(339,670), respectively)		0	0
Servicing revenue, net		0	0
Interest income		18,933	25,466
Gain on originated residential mortgage loans, held-for-sale, net		0	0
Total revenues		18,933	25,466
Interest expense and warehouse line fees		2,262	3,018
G&A and other		2,254	3,036
Total operating expenses		4,516	6,054
Change in fair value of investments		(13,733)	(6,004)
Gain (loss) on settlement of investments, net		0	0
Other income (loss), net		8,772	(2,207)
Total other income (loss)		(4,961)	(8,211)
Impairment		0	0
Income Before Income Taxes		9,456	11,201
Income tax expense (benefit)		37	59
Net income (loss)		9,419	11,142
Noncontrolling interests in income (loss) of consolidated subsidiaries		4,974	4,561
Dividends on preferred stock		0	0
Net income (loss) attributable to common stockholders - basic		4,445	6,581
Investments		462,055
Cash and cash equivalents		29,702
Restricted cash		23,734
Other assets		35,702
Goodwill (Note 15)		0
Total assets		551,193
Debt		413,881
Other liabilities		973
Total liabilities		414,854
Total equity		136,339
Noncontrolling interests in equity of consolidated subsidiaries		38,745
Total New Residential stockholders’ equity		97,594
Investments in equity method investees		0
Mortgage Loans Receivable
Segment Reporting Information [Line Items]
Servicing fee revenue, net and interest income from MSRs and MSR financing receivables		0	0
Change in fair value of MSRs and MSR financing receivables (includes realization of cash flows of $(200,325) and $(339,670), respectively)		0	0
Servicing revenue, net		0	0
Interest income		34,277	0
Gain on originated residential mortgage loans, held-for-sale, net		0	0
Total revenues		34,277	0
Interest expense and warehouse line fees		6,969	0
G&A and other		16,408	0
Total operating expenses		23,377	0
Change in fair value of investments		26,752	0
Gain (loss) on settlement of investments, net		(30,634)	0
Other income (loss), net		0	0
Total other income (loss)		(3,882)	0
Impairment		0	0
Income Before Income Taxes		7,018	0
Income tax expense (benefit)		0	0
Net income (loss)		7,018	0
Noncontrolling interests in income (loss) of consolidated subsidiaries		0	0
Dividends on preferred stock		0	0
Net income (loss) attributable to common stockholders - basic		7,018	0
Investments		1,670,415
Cash and cash equivalents		39,048
Restricted cash		80,612
Other assets		113,293
Goodwill (Note 15)		55,731
Total assets		1,959,099
Debt		1,413,739
Other liabilities		26,615
Total liabilities		1,440,354
Total equity		518,745
Noncontrolling interests in equity of consolidated subsidiaries		0
Total New Residential stockholders’ equity		518,745
Investments in equity method investees		0
Corporate
Segment Reporting Information [Line Items]
Servicing fee revenue, net and interest income from MSRs and MSR financing receivables		0	0
Change in fair value of MSRs and MSR financing receivables (includes realization of cash flows of $(200,325) and $(339,670), respectively)		0	0
Servicing revenue, net		0	0
Interest income		6,439	0
Gain on originated residential mortgage loans, held-for-sale, net		0	0
Total revenues		6,439	0
Interest expense and warehouse line fees		10,199	8,926
G&A and other		31,630	27,135
Total operating expenses		41,829	36,061
Change in fair value of investments		0	0
Gain (loss) on settlement of investments, net		0	0
Other income (loss), net		(75)	(629)
Total other income (loss)		(75)	(629)
Impairment		0	0
Income Before Income Taxes		(35,465)	(36,690)
Income tax expense (benefit)		0	0
Net income (loss)		(35,465)	(36,690)
Noncontrolling interests in income (loss) of consolidated subsidiaries		0	0
Dividends on preferred stock		22,461	14,358
Net income (loss) attributable to common stockholders - basic		(57,926)	(51,048)
Investments		0
Cash and cash equivalents		141,490
Restricted cash		312
Other assets		200,883
Goodwill (Note 15)		0
Total assets		342,685
Debt		610,047
Other liabilities		163,721
Total liabilities		773,768
Total equity		(431,083)
Noncontrolling interests in equity of consolidated subsidiaries		0
Total New Residential stockholders’ equity		(431,083)
Investments in equity method investees		0
Operating | Origination
Segment Reporting Information [Line Items]
Servicing fee revenue, net and interest income from MSRs and MSR financing receivables		(653)	(8,110)
Change in fair value of MSRs and MSR financing receivables (includes realization of cash flows of $(200,325) and $(339,670), respectively)		0	0
Servicing revenue, net		(653)	(8,110)
Interest income		55,371	22,852
Gain on originated residential mortgage loans, held-for-sale, net		407,269	384,423
Total revenues		461,987	399,165
Interest expense and warehouse line fees		29,435	18,063
G&A and other		408,758	189,926
Total operating expenses		438,193	207,989
Change in fair value of investments		0	0
Gain (loss) on settlement of investments, net		0	0
Other income (loss), net		2,095	59
Total other income (loss)		2,095	59
Impairment		0	0
Income Before Income Taxes		25,889	191,235
Income tax expense (benefit)		6,516	36,386
Net income (loss)		19,373	154,849
Noncontrolling interests in income (loss) of consolidated subsidiaries		407	3,525
Dividends on preferred stock		0	0
Net income (loss) attributable to common stockholders - basic		18,966	151,324
Operating | Servicing
Segment Reporting Information [Line Items]
Servicing fee revenue, net and interest income from MSRs and MSR financing receivables		349,058	219,553
Change in fair value of MSRs and MSR financing receivables (includes realization of cash flows of $(200,325) and $(339,670), respectively)		497,317	147,351
Servicing revenue, net		846,375	366,904
Interest income		11,353	4,873
Gain on originated residential mortgage loans, held-for-sale, net		61,762	12,017
Total revenues		919,490	383,794
Interest expense and warehouse line fees		33,706	23,100
G&A and other		124,780	90,607
Total operating expenses		158,486	113,707
Change in fair value of investments		(32)	0
Gain (loss) on settlement of investments, net		(315)	(665)
Other income (loss), net		881	1,092
Total other income (loss)		534	427
Impairment		0	0
Income Before Income Taxes		761,538	270,514
Income tax expense (benefit)		161,116	33,674
Net income (loss)		600,422	236,840
Noncontrolling interests in income (loss) of consolidated subsidiaries		0	0
Dividends on preferred stock		0	0
Net income (loss) attributable to common stockholders - basic		600,422	236,840
Operating | MSR Related Investments
Segment Reporting Information [Line Items]
Servicing fee revenue, net and interest income from MSRs and MSR financing receivables		107,995	136,841
Change in fair value of MSRs and MSR financing receivables (includes realization of cash flows of $(200,325) and $(339,670), respectively)		78,076	44,923
Servicing revenue, net		186,071	181,764
Interest income		15,702	21,584
Gain on originated residential mortgage loans, held-for-sale, net		0	(8,031)
Total revenues		201,773	195,317
Interest expense and warehouse line fees		26,365	28,802
G&A and other		56,010	55,121
Total operating expenses		82,375	83,923
Change in fair value of investments		(1,409)	(1,824)
Gain (loss) on settlement of investments, net		(2,199)	(12,412)
Other income (loss), net		28,943	7,384
Total other income (loss)		25,335	(6,852)
Impairment		0	0
Income Before Income Taxes		144,733	104,542
Income tax expense (benefit)		31,463	12,837
Net income (loss)		113,270	91,705
Noncontrolling interests in income (loss) of consolidated subsidiaries		228	1,308
Dividends on preferred stock		0	0
Net income (loss) attributable to common stockholders - basic		113,042	90,397
Eliminations | Origination and Servicing
Segment Reporting Information [Line Items]
Total revenues		$ (2,400)	$ (11,500)

[1] The Company's Consolidated Balance Sheets include assets of consolidated variable interest entities (“VIEs”) that can only be used to settle obligations and liabilities of the VIE for which creditors do not have recourse to the primary beneficiary (New Residential). As of March 31, 2022, and December 31, 2021, total assets of consolidated VIEs were $3.2 billion and $2.8 billion, respectively, and total liabilities of consolidated VIEs were $2.6 billion and $2.1 billion, respectively. See Note 20 for further details.