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Securitizations and Variable Interest Entities - Schedule Of Carrying Value and Classification of Assets and Liabilities of Agency MSR Financing Facility (Details) - USD ($)
$ in Millions
Mar. 31, 2024
Dec. 31, 2023
Mar. 31, 2023
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]      
Servicing Asset $ 2,374.7 $ 2,272.2  
Debt service accounts $ 37.2   $ 21.5