v3.26.1
Commitments - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Mar. 01, 2026
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2026
Jun. 30, 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   $ 1,700.0   $ 1,700.0   $ 2,900.0
Funded amount in connection with reverse mortgage loans       144.4    
Forward Mortgage Loan Interest Rate Lock Commitments            
Other Commitments [Line Items]            
Short-term commitments to lend   2,300.0   2,300.0    
Reverse loans IRLCs            
Other Commitments [Line Items]            
Short-term commitments to lend   0.4   0.4    
Rithm Capital Corp | Fair Value Non-Agency Mortgage Servicing Rights            
Other Commitments [Line Items]            
UPB of MSR liability $ 1,200.0   $ 1,200.0      
Subservicing Unpaid Principal Balance, Amount, Derecognition $ 600.0 21,200.0 $ 600.0      
Rithm Capital Corp | Mortgage Servicing Rights Title Retained | 2017 Agreements and New RMSR Agreements            
Other Commitments [Line Items]            
UPB of rights to MSRs sold   $ 6,800.0   $ 6,800.0    
MAV Asset Vehicle LLC            
Other Commitments [Line Items]            
Lockout Restrictions For Selling Or Transferring Mortgage Servicing Rights, Percentage   25.00%   25.00%    
Rithm | Mortgage Servicing Rights Title Retained | 2017 Agreements and New RMSR Agreements            
Other Commitments [Line Items]            
UPB of rights to MSRs sold   $ 6,800.0   $ 6,800.0    
Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages, Not Expected To Receive Consent   $ 3,400.0   3,400.0    
Customer Concentration Risk | Servicing And Subservicing Fees Benchmark | Rithm Capital Corp            
Other Commitments [Line Items]            
Concentration risk (percent)         13.00%  
Concentration Risk, Amount       $ 31.4 $ 41.6  
Customer Concentration Risk | Servicing And Subservicing Fees Benchmark | MAV Asset Vehicle LLC            
Other Commitments [Line Items]            
Concentration risk (percent)       8.00% 9.00%  
Concentration Risk, Amount       $ 27.9 $ 29.7  
Customer Concentration Risk | Servicing And Subservicing Fees Benchmark | Rithm            
Other Commitments [Line Items]            
Concentration risk (percent)       9.00%    
Customer Concentration Risk | Unpaid Principal Balance | Rithm Capital Corp            
Other Commitments [Line Items]            
Concentration risk (percent)       2.00%    
Concentration Risk, Amount       $ 8,000.0    
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)       5.00%    
Customer Concentration Risk | Loan Count | MAV Asset Vehicle LLC            
Other Commitments [Line Items]            
Concentration risk (percent)       11.00%    
Customer Concentration Risk | Delinquent Loans | Rithm Capital Corp            
Other Commitments [Line Items]            
Concentration risk (percent)       17.00%    
Customer Concentration Risk | Pledged MSR Liability Expense Benchmark | Rithm Capital Corp            
Other Commitments [Line Items]            
Concentration Risk, Amount         18.6  
Customer Concentration Risk | Pledged MSR Liability Expense Benchmark | MAV Asset Vehicle LLC            
Other Commitments [Line Items]            
Concentration Risk, Amount       $ 21.7 $ 23.0  
Customer Concentration Risk | Pledged MSR Liability Expense Benchmark | Rithm            
Other Commitments [Line Items]            
Concentration Risk, Amount       15.1    
Customer Concentration Risk | Servicing and Subservicing Portfolio Benchmark | MAV Asset Vehicle LLC            
Other Commitments [Line Items]            
Concentration Risk, Amount       $ 37,700.0