Other Financing Liabilities, at Fair Value - Narrative (Details) $ in Thousands	Mar. 01, 2026 USD ($)	May 02, 2022	Mar. 31, 2026 USD ($) subservicer	Dec. 31, 2025 USD ($)
Servicing Assets at Fair Value [Line Items]
Automatic renewal term		1 year
Number of subservicers \| subservicer			3
MSR related financing liabilities, at fair value			$ 794,600	$ 842,000
Financing Liability Mortgage Servicing Rights Pledged [Member]
Servicing Assets at Fair Value [Line Items]
MSR related financing liabilities, at fair value			541,200	573,200
Rithm Capital Corp \| Financing Liability Mortgage Servicing Rights Pledged [Member]
Servicing Assets at Fair Value [Line Items]
MSR related financing liabilities, at fair value			84,200
Subservicing Assets \| Rithm
Servicing Assets at Fair Value [Line Items]
UPB of rights to MSRs sold			22,700,000
Fair Value Non-Agency Mortgage Servicing Rights \| Rithm Capital Corp
Servicing Assets at Fair Value [Line Items]
UPB of MSR liability	$ 1,200,000
Subservicing Unpaid Principal Balance, Amount, Derecognition	$ 600,000
2017 Agreements and New RMSR Agreements \| Mortgage Servicing Rights Title Retained \| Rithm
Servicing Assets at Fair Value [Line Items]
UPB of rights to MSRs sold			6,900,000
2017 Agreements and New RMSR Agreements \| Mortgage Servicing Rights Title Retained \| Rithm Capital Corp
Servicing Assets at Fair Value [Line Items]
UPB of rights to MSRs sold				$ 6,900,000
Original Rights to Mortgage Servicing Rights Agreements \| Financing Liability Mortgage Servicing Rights Pledged [Member]
Servicing Assets at Fair Value [Line Items]
MSR related financing liabilities, at fair value			$ 84,200