MSR Related Financing Liabilities, at Fair Value - Narrative (Details) $ in Thousands			3 Months Ended
	Mar. 01, 2026 USD ($)	May 02, 2022	Jun. 30, 2026 USD ($) subservicer	Mar. 31, 2026 USD ($)	Dec. 31, 2025 USD ($)
Servicing Assets at Fair Value [Line Items]
Automatic renewal term		1 year
Number of subservicers \| subservicer			3
MSR related financing liabilities, at fair value			$ 729,000		$ 842,000
Financing Liability Mortgage Servicing Rights Pledged [Member]
Servicing Assets at Fair Value [Line Items]
MSR related financing liabilities, at fair value			457,500		$ 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			80,600
Subservicing Assets \| Rithm
Servicing Assets at Fair Value [Line Items]
UPB of rights to MSRs sold			1,200,000
Fair Value Non-Agency Mortgage Servicing Rights \| Rithm Capital Corp
Servicing Assets at Fair Value [Line Items]
UPB of MSR liability	$ 1,200,000			$ 1,200,000
Subservicing Unpaid Principal Balance, Amount, Derecognition	$ 600,000		21,200,000	$ 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			6,800,000
Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages, Not Expected To Receive Consent			3,400,000
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			6,800,000
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			$ 80,600