VARIABLE INTEREST ENTITIES - Others' Interest in Equity of Consumer Loan Companies (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Noncontrolling Interest [Line Items]
Total consolidated equity	$ 6,166,151	$ 5,388,972	$ 6,166,151	$ 5,388,972	$ 5,621,813	$ 5,429,684	$ 5,330,464	$ 7,236,260
Others’ interest in equity of consolidated subsidiary	94,100		94,100			108,668
Net income	145,726	44,129	447,062	(1,563,126)
Noncontrolling interests in income (loss) of consolidated subsidiaries	10,053	38,640	$ 19,447	22,478
VIE, consolidated
Noncontrolling Interest [Line Items]
New Residential Interest in Investees			73.20%
VIE, consolidated | The Buyer
Noncontrolling Interest [Line Items]
Total consolidated equity	131,000		$ 131,000			163,944
Others’ interest in equity of consolidated subsidiary	35,066		35,066			43,882
Net income	(6,817)	32,092	(1,932)	(9,923)
Noncontrolling interests in income (loss) of consolidated subsidiaries	(1,825)	8,591	(517)	(2,656)
VIE, consolidated | Shelter Joint Ventures
Noncontrolling Interest [Line Items]
Total consolidated equity	33,521		33,521			38,727
Others’ interest in equity of consolidated subsidiary	16,593		16,593			19,402
Net income	6,516	9,037	13,639	11,660
Noncontrolling interests in income (loss) of consolidated subsidiaries	3,225	4,419	6,750	5,702
VIE, consolidated | Consumer Loan SPVs
Noncontrolling Interest [Line Items]
Total consolidated equity	90,107		90,107			96,418
Others’ interest in equity of consolidated subsidiary	42,441		42,441			$ 45,384
Net income	18,608	55,119	28,417	41,789
Noncontrolling interests in income (loss) of consolidated subsidiaries	$ 8,653	$ 25,630	$ 13,214	$ 19,432
VIE, consolidated | The Buyer
Noncontrolling Interest [Line Items]
Others’ ownership interest	26.80%		26.80%			26.80%
New Residential Interest in Investees	73.20%	73.20%	73.20%	73.20%
VIE, consolidated | The Buyer | Weighted Average
Noncontrolling Interest [Line Items]
Others’ ownership interest	26.80%	26.80%	26.80%	26.80%
VIE, consolidated | Shelter Joint Ventures
Noncontrolling Interest [Line Items]
Others’ ownership interest	49.50%		49.50%			50.10%
VIE, consolidated | Shelter Joint Ventures | Weighted Average
Noncontrolling Interest [Line Items]
Others’ ownership interest	49.50%	48.90%	49.50%	48.90%
VIE, consolidated | Consumer Loan SPVs
Noncontrolling Interest [Line Items]
Others’ ownership interest	46.50%		46.50%			46.50%
VIE, consolidated | Consumer Loan SPVs | Weighted Average
Noncontrolling Interest [Line Items]
Others’ ownership interest	46.50%	46.50%	46.50%	46.50%