RELATED PARTY TRANSACTIONS - Narrative (Details) - USD ($) $ in Thousands, shares in Millions		3 Months Ended
	Jun. 11, 2024	Jun. 30, 2024	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023	Jul. 31, 2023	Mar. 31, 2022
Related Party Transaction [Line Items]
Alternative investment			$ 23,800		$ 70,200
Total Residential Mortgage Loans, HFS
Related Party Transaction [Line Items]
Unpaid principal balance			75,872
Great Ajax Corp.
Related Party Transaction [Line Items]
Percentage of common stock outstanding	6.40%
Great Ajax Corp. | Total Residential Mortgage Loans, HFS
Related Party Transaction [Line Items]
Unpaid principal balance				$ 245,300
Great Ajax Corp.
Related Party Transaction [Line Items]
Warrant term		5 years
Shares issued for exercised warrants (in shares)		3.3
Newrez Joint Ventures | Great Ajax Corp. | Total Residential Mortgage Loans, HFS
Related Party Transaction [Line Items]
Unpaid principal balance		$ 562,100
Previously serviced amount		$ 2,900,000
Loan fee, performing and non performing loans (as a percent)		0.54%
Fair market value of the REO (as a percent)		1.00%
Purchase price of REO (as a percent)		1.00%
Carrying value of bonds retained by Rithm Capital			38,600
Related Party | Great Ajax Corp.
Related Party Transaction [Line Items]
Number of shares issued (in shares)	2.9
Net proceeds	$ 14,000
Loan Agreement | Related Party | Genesis
Related Party Transaction [Line Items]
Financing receivable						$ 86,400
Related Party Assets Under Management | Executive Managing Directors Employeesand Other Related Parties
Related Party Transaction [Line Items]
Assets under management			$ 1,300,000
Percent of assets under management not charged management and incentive fees			70.10%
Structured Alternative Investment Solution | Related Party
Related Party Transaction [Line Items]
Amount invested		$ 91,400
Structured Alternative Investment Solution | Related Party | Sculptor
Related Party Transaction [Line Items]
Alternative investment							$ 350,000
Amount invested							$ 127,800