v3.26.1
Other Financing Liabilities, at Fair Value - Schedule of Assets, Liabilities Related to MSR Transfer Agreements (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Servicing Liabilities at Fair Value [Line Items]    
Other financing liabilities, at fair value $ 794.6 $ 842.0
Assets serviced 200,100.0 191,100.0
Financing Liability Mortgage Servicing Rights Pledged [Member]    
Servicing Liabilities at Fair Value [Line Items]    
Other financing liabilities, at fair value 541.2 573.2
Transferred MSR, Subject To Pledged Liability    
Servicing Liabilities at Fair Value [Line Items]    
Assets serviced 37,200.0 $ 38,600.0
Original Rights to Mortgage Servicing Rights Agreements | Financing Liability Mortgage Servicing Rights Pledged [Member]    
Servicing Liabilities at Fair Value [Line Items]    
Other financing liabilities, at fair value 84.2  
Rithm Capital Corp | Financing Liability Mortgage Servicing Rights Pledged [Member]    
Servicing Liabilities at Fair Value [Line Items]    
Other financing liabilities, at fair value 84.2  
Rithm Capital Corp | Transferred MSR, Subject To Pledged Liability    
Servicing Liabilities at Fair Value [Line Items]    
Assets serviced $ 6,900.0