v3.26.1
Commitments - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 01, 2026
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Other Commitments [Line Items]        
Threshold of outstanding principal balance on maximum claim amount (as a percent)   98.00%    
Floating Rate Reverse Mortgage Loans        
Other Commitments [Line Items]        
Additional borrowing capacity to borrowers   $ 2,900.0   $ 2,900.0
Funded amount in connection with reverse mortgage loans   74.0    
Forward Mortgage Loan Interest Rate Lock Commitments        
Other Commitments [Line Items]        
Short-term commitments to lend   2,700.0    
Reverse loans IRLCs        
Other Commitments [Line Items]        
Short-term commitments to lend   $ 14.2    
Rithm Capital Corp | Fair Value Non-Agency Mortgage Servicing Rights        
Other Commitments [Line Items]        
UPB of MSR liability $ 1,200.0      
Rithm Capital Corp | Mortgage Servicing Rights Title Retained | 2017 Agreements and New RMSR Agreements        
Other Commitments [Line Items]        
UPB of rights to MSRs sold       $ 6,900.0
MAV Asset Vehicle LLC        
Other Commitments [Line Items]        
Lockout Restrictions For Selling Or Transferring Mortgage Servicing Rights, Percentage   25.00%    
Rithm | Mortgage Servicing Rights Title Retained | 2017 Agreements and New RMSR Agreements        
Other Commitments [Line Items]        
UPB of rights to MSRs sold   $ 6,900.0    
Customer Concentration Risk | Servicing And Subservicing Fees Benchmark | Rithm Capital Corp        
Other Commitments [Line Items]        
Concentration risk (percent)     14.00%  
Concentration Risk, Amount     $ 22.2  
Customer Concentration Risk | Servicing And Subservicing Fees Benchmark | MAV Asset Vehicle LLC        
Other Commitments [Line Items]        
Concentration risk (percent)   8.00% 10.00%  
Concentration Risk, Amount   $ 14.0 $ 15.0  
Customer Concentration Risk | Servicing And Subservicing Fees Benchmark | Rithm        
Other Commitments [Line Items]        
Concentration risk (percent)   10.00%    
Concentration Risk, Amount   $ 17.2    
Customer Concentration Risk | Unpaid Principal Balance | Rithm Capital Corp        
Other Commitments [Line Items]        
Concentration risk (percent)   9.00%    
Concentration Risk, Amount   $ 29,700.0    
Customer Concentration Risk | Unpaid Principal Balance | MAV Asset Vehicle LLC        
Other Commitments [Line Items]        
Concentration risk (percent)   11.00%    
Customer Concentration Risk | Loan Count | Rithm Capital Corp        
Other Commitments [Line Items]        
Concentration risk (percent)   17.00%    
Customer Concentration Risk | Loan Count | MAV Asset Vehicle LLC        
Other Commitments [Line Items]        
Concentration risk (percent)   10.00%    
Customer Concentration Risk | Delinquent Loans | Rithm Capital Corp        
Other Commitments [Line Items]        
Concentration risk (percent)   47.00%    
Customer Concentration Risk | Pledged MSR Liability Expense Benchmark | Rithm Capital Corp        
Other Commitments [Line Items]        
Concentration Risk, Amount     9.0  
Customer Concentration Risk | Pledged MSR Liability Expense Benchmark | MAV Asset Vehicle LLC        
Other Commitments [Line Items]        
Concentration Risk, Amount   $ 10.8 $ 11.6  
Customer Concentration Risk | Pledged MSR Liability Expense Benchmark | Rithm        
Other Commitments [Line Items]        
Concentration Risk, Amount   8.2    
Customer Concentration Risk | Servicing and Subservicing Portfolio Benchmark | MAV Asset Vehicle LLC        
Other Commitments [Line Items]        
Concentration Risk, Amount   $ 37,900.0