REAL ESTATE AND OTHER SECURITIES - Summary of Real Estate Securities (Details) $ in Thousands	6 Months Ended
Jun. 30, 2021 USD ($) security bond	Dec. 31, 2020 USD ($)
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	$ 30,726,412
Carrying Value	$ 14,956,889	$ 14,244,558
Weighted Average Life (Years)	10 months 24 days
Investments	$ 29,195,843
Bonds
Debt Securities, Available-for-sale [Line Items]
Carrying Value	$ 343,200
Number of bonds which New Residential was unable to obtain rating information \| bond	288
Residual Bonds
Debt Securities, Available-for-sale [Line Items]
Investments	$ 29,200
Non-Agency Bonds
Debt Securities, Available-for-sale [Line Items]
Investments	2,700
AFS Agency
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	101,533
Amortized Cost Basis	101,296
Gross Unrealized Gains	10,481
Gross Unrealized Losses	0
Carrying Value	$ 111,777	121,761
Number of Securities \| security	1
Weighted Average Rating	AAA
Weighted Average Coupon	3.50%
Weighted Average Yield	3.50%
Weighted Average Life (Years)	6 years 4 months 24 days
AFS Non-Agency
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	$ 3,212,188
Amortized Cost Basis	509,394
Gross Unrealized Gains	73,576
Gross Unrealized Losses	(1,050)
Carrying Value	$ 581,920	752,003
Number of Securities \| security	342
Weighted Average Rating	AA
Weighted Average Coupon	3.22%
Weighted Average Yield	3.00%
Weighted Average Life (Years)	3 years 3 months 18 days
Weighted Average Principal Subordination	24.30%
FVO Agency
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	$ 13,600,133
Amortized Cost Basis	14,056,893
Gross Unrealized Gains	6,466
Gross Unrealized Losses	(221,418)
Carrying Value	$ 13,841,941	12,941,873
Number of Securities \| security	60
Weighted Average Rating	AAA
Weighted Average Coupon	2.13%
Weighted Average Yield	2.13%
Weighted Average Life (Years)	7 years 1 month 6 days
FVO Non-Agency
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	$ 13,812,558
Amortized Cost Basis	428,719
Gross Unrealized Gains	32,397
Gross Unrealized Losses	(39,865)
Carrying Value	$ 421,251	428,921
Number of Securities \| security	236
Weighted Average Rating	AA+
Weighted Average Coupon	2.11%
Weighted Average Yield	4.06%
Weighted Average Life (Years)	2 years 10 months 24 days
Weighted Average Principal Subordination	21.80%
Agency RMBS
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	$ 13,701,666
Agency RMBS \| Fixed Rate Securities
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	13,700,000
Non-Agency RMBS
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	17,024,746
Non-Agency RMBS \| Fixed Rate Securities
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	10,600,000
Residual and interest - only notional amount	9,700,000
Non-Agency RMBS \| Floating Rate Securities
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	6,400,000
Residual and interest - only notional amount	6,300,000
Investments in Real Estate Securities
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	30,726,412
Amortized Cost Basis	15,096,302
Gross Unrealized Gains	122,920
Gross Unrealized Losses	(262,333)
Carrying Value	$ 14,956,889	$ 14,244,558
Number of Securities \| security	639
Weighted Average Rating	AAA
Weighted Average Coupon	2.24%
Weighted Average Yield	3.09%
Weighted Average Life (Years)	4 years 9 months 18 days
Corporate debt
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	$ 500
Amortized Cost Basis	500
Gross Unrealized Gains	20
Gross Unrealized Losses	0
Carrying Value	$ 520
Number of Securities \| security	1
Weighted Average Rating	B-
Weighted Average Coupon	8.30%
Weighted Average Yield	8.30%
Weighted Average Life (Years)	3 years 9 months 18 days
Consumer loan bonds
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	$ 12,356
Amortized Cost Basis	13,421
Gross Unrealized Gains	1,013
Gross Unrealized Losses	0
Carrying Value	$ 14,433
Number of Securities \| security	6
Interest-only securities
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	$ 8,009,249
Amortized Cost Basis	214,753
Gross Unrealized Gains	10,900
Gross Unrealized Losses	(34,670)
Carrying Value	$ 190,983
Number of Securities \| security	122
Weighted Average Rating	AA+
Weighted Average Coupon	1.30%
Weighted Average Yield	0.80%
Weighted Average Life (Years)	2 years
Servicing strips
Debt Securities, Available-for-sale [Line Items]
Outstanding Face Amount	$ 4,585,044
Amortized Cost Basis	57,144
Gross Unrealized Gains	6,992
Gross Unrealized Losses	(5,172)
Carrying Value	$ 58,964
Number of Securities \| security	57
Weighted Average Coupon	1.60%
Weighted Average Yield	17.20%
Weighted Average Life (Years)	3 years 2 months 12 days

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