SERVICER ADVANCE INVESTMENTS - Narrative (Details) - Advance Purchaser - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Schedule of Equity Method Investments [Line Items]
Capital distributed to third-party co-investors	$ 71.5
Capital distributed to new residential	$ 597.9
Servicer advance investments
Schedule of Equity Method Investments [Line Items]
Rithm Capital’s percentage ownership	89.30%	89.30%	89.30%