v3.26.3
Securitizations and Variable Interest Entities - Carrying Value and Classification of Assets And Liabilities of PLS Notes Facility (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Sep. 30, 2025
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]      
Servicing Asset $ 3,360.6 $ 2,825.3  
Debt service account (Restricted cash) 47.8   $ 35.1
Secured Debt      
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]      
Unamortized debt issuance costs (0.7) 0.0  
Variable Interest Entity, Primary Beneficiary | Secured Debt | Agency and PLS Mortgage Servicing Rights Financing Facility      
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]      
Servicing Asset 1,326.7 1,035.7  
Debt service account (Restricted cash) 1.1 0.9  
Short-Term Debt $ 890.6 $ 700.8