REAL ESTATE AND OTHER SECURITIES - Summary of Real Estate Securities in an Unrealized Loss Position - Associated Intent to Sell (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
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 Rithm Capital 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	77,476	77,843
Amortized Cost Basis After Credit Impairment	77,907	78,101
Gross Unrealized Losses, Credit	(9,588)	(10,816)
Gross Unrealized Losses, Non-Credit	(431)	(258)
Non-credit impaired securities
Debt Securities, Available-for-sale [Line Items]
Fair Value	258,764	271,405
Amortized Cost Basis After Credit Impairment	288,404	304,831
Gross Unrealized Losses, Credit	0	0
Gross Unrealized Losses, Non-Credit	(29,640)	(33,426)
Total debt securities in an unrealized loss position
Debt Securities, Available-for-sale [Line Items]
Fair Value	336,240	349,248
Amortized Cost Basis After Credit Impairment	366,311	382,932
Gross Unrealized Losses, Credit	(9,588)	(10,816)
Gross Unrealized Losses, Non-Credit	$ (30,071)	$ (33,684)