REAL ESTATE AND OTHER SECURITIES - Summary of Real Estate Securities (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) security bond	Dec. 31, 2020 USD ($) security
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	$ 24,314,300	$ 31,869,682
Carrying Value	$ 9,396,539	14,244,558
Weighted Average Life (Years)	1 year 3 months 18 days
Investments	$ 31,564,175	26,441,337
Bonds
Debt Securities, Available-for-sale [Line Items]
Carrying Value	$ 346,100
Number of bonds which New Residential was unable to obtain rating information | bond	298
Residual Bonds
Debt Securities, Available-for-sale [Line Items]
Investments	$ 23,500
Non-Agency Bonds
Debt Securities, Available-for-sale [Line Items]
Investments	2,800
AFS Agency
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	91,572	110,360
Gross Unrealized Gains	7,008	10,612
Gross Unrealized Losses	0	0
Carrying Value	$ 98,367	$ 121,761
Number of Securities | security	1	1
Weighted Average Rating	AAA	AAA
Weighted Average Coupon	3.50%	3.50%
Weighted Average Yield	3.50%	3.50%
Weighted Average Life (Years)	4 years 4 months 24 days	5 years 10 months 24 days
AFS Non-Agency
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	$ 2,956,066	$ 3,628,870
Gross Unrealized Gains	84,494	62,890
Gross Unrealized Losses	(117)	(7,394)
Carrying Value	$ 522,416	$ 752,004
Number of Securities | security	334	364
Weighted Average Rating	AA	AA
Weighted Average Coupon	3.29%	3.40%
Weighted Average Yield	3.18%	3.50%
Weighted Average Life (Years)	3 years 4 months 24 days	4 years 10 months 24 days
Weighted Average Principal Subordination	26.60%	19.70%
FVO Agency
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	$ 8,307,771	$ 12,380,792
Gross Unrealized Gains	204	101,414
Gross Unrealized Losses	(226,309)	0
Carrying Value	$ 8,346,230	$ 12,941,873
Number of Securities | security	40	57
Weighted Average Rating	AAA	AAA
Weighted Average Coupon	2.13%	2.20%
Weighted Average Yield	2.13%	2.20%
Weighted Average Life (Years)	7 years	4 years 3 months 18 days
FVO Non-Agency
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	$ 12,958,891	$ 15,749,660
Gross Unrealized Gains	32,814	25,208
Gross Unrealized Losses	(51,892)	(53,423)
Carrying Value	$ 429,526	$ 428,920
Number of Securities | security	271	225
Weighted Average Rating	AA+	AA+
Weighted Average Coupon	2.15%	1.90%
Weighted Average Yield	3.91%	5.00%
Weighted Average Life (Years)	3 years 2 months 12 days	4 years 4 months 24 days
Weighted Average Principal Subordination	20.30%	19.00%
Investments in Real Estate Securities
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	$ 24,314,300	$ 31,869,682
Gross Unrealized Gains	124,520	200,124
Gross Unrealized Losses	(278,318)	(60,817)
Carrying Value	$ 9,396,539	$ 14,244,558
Number of Securities | security	646	647
Weighted Average Rating	AAA	AAA
Weighted Average Coupon	2.19%	2.30%
Weighted Average Yield	2.27%	2.40%
Weighted Average Life (Years)	6 years 7 months 6 days	4 years 3 months 18 days
Non-Agency
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	$ 15,914,957	$ 19,378,530
Non-Agency | Fixed Rate Securities
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	9,600,000	11,900,000
Residual and interest - only notional amount	8,700,000	10,900,000
Non-Agency | Floating Rate Securities
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	6,400,000	7,500,000
Residual and interest - only notional amount	6,200,000	7,200,000
Corporate bond
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	414	500
Gross Unrealized Gains	9	23
Gross Unrealized Losses	0	0
Carrying Value	$ 423	$ 523
Number of Securities | security	1	1
Weighted Average Rating	B-	B-
Weighted Average Coupon	8.25%	8.25%
Weighted Average Yield	8.25%	8.25%
Weighted Average Life (Years)	3 years 3 months 18 days	4 years 3 months 18 days
Consumer loan bonds
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	$ 2,960	$ 13,022
Gross Unrealized Gains	878	503
Gross Unrealized Losses	0	0
Carrying Value	$ 2,974	$ 12,862
Number of Securities | security	3	6
Weighted Average Life (Years)	0 years	0 years
Interest-only Securities
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	$ 7,368,874	$ 9,457,488
Gross Unrealized Gains	8,099	6,600
Gross Unrealized Losses	(43,626)	(43,781)
Carrying Value	$ 152,489	$ 211,073
Number of Securities | security	127	124
Weighted Average Rating	AA+	AA+
Weighted Average Coupon	1.19%	1.22%
Weighted Average Yield	1.54%	5.09%
Weighted Average Life (Years)	2 years	2 years 1 month 6 days
Servicing Strips
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	$ 4,413,700	$ 4,979,723
Gross Unrealized Gains	6,869	5,865
Gross Unrealized Losses	(7,758)	(9,476)
Carrying Value	$ 59,120	$ 46,378
Number of Securities | security	59	58
Weighted Average Rating	N/A	N/A
Weighted Average Coupon	1.40%	0.42%
Weighted Average Yield	13.12%	8.38%
Weighted Average Life (Years)	2 years 7 months 6 days	3 years 10 months 24 days
Agency
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	$ 8,399,343	$ 12,491,152
Agency | Fixed Rate Securities
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	8,400,000	12,500,000
Agency | Floating Rate Securities
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	$ 0	$ 0