REAL ESTATE AND OTHER SECURITIES - Summary of Real Estate Securities in an Unrealized Loss Position - Associated Intent to Sell (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Securities Rithm Capital intends to sell
Debt Securities, Available-for-sale [Line Items]
Fair Value	$ 0	$ 0
Amortized Cost Basis After Credit Impairment	0	0
Gross Unrealized Losses, Credit	0	0
Gross Unrealized Losses, Non-Credit	0	0
Securities New Residential is more likely than not to be required to sell
Debt Securities, Available-for-sale [Line Items]
Fair Value	0	0
Amortized Cost Basis After Credit Impairment	0	0
Gross Unrealized Losses, Credit	0	0
Gross Unrealized Losses, Non-Credit	0	0
Credit impaired securities
Debt Securities, Available-for-sale [Line Items]
Fair Value	86,372	6,581
Amortized Cost Basis After Credit Impairment	86,372	6,581
Gross Unrealized Losses, Credit	(6,356)	(3,471)
Gross Unrealized Losses, Non-Credit	0	0
Non-credit impaired securities
Debt Securities, Available-for-sale [Line Items]
Fair Value	285,480	3,927
Amortized Cost Basis After Credit Impairment	298,625	4,044
Gross Unrealized Losses, Credit	0	0
Gross Unrealized Losses, Non-Credit	(13,145)	(117)
Total debt securities in an unrealized loss position
Debt Securities, Available-for-sale [Line Items]
Fair Value	371,852	10,508
Amortized Cost Basis After Credit Impairment	384,997	10,625
Gross Unrealized Losses, Credit	(6,356)	(3,471)
Gross Unrealized Losses, Non-Credit	$ (13,145)	$ (117)