v3.26.1
Securitizations and Variable Interest Entities - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Jun. 30, 2025
Dec. 31, 2025
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]        
Average period to securitization 30 days      
MSRs retained $ 104.8 $ 60.5    
Percentage of loan transferred through securitization 60 days or more past due 2.30%   2.20%  
Threshold period past due 60 days     60 days
Percentage Of The Limited Liability Company Interest 100.00%      
Total Assets $ 17,735.2     $ 16,170.6
Mortgage warehouse facilities 2,193.0     1,224.6
Mortgage Warehouse Agreement | Variable Interest Entity, Primary Beneficiary        
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]        
Total Assets 905.6     507.6
Warehouse Mortgage Loan Financing Facility | Variable Interest Entity, Primary Beneficiary        
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]        
Mortgage warehouse facilities $ 876.2     $ 496.1
Ginnie Mae Loans        
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]        
Percentage of loan transferred through securitization 60 days or more past due 5.60%   5.50%  
Threshold period past due 60 days     60 days