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Securitizations and Variable Interest Entities - Schedule of Carrying Value of Assets and Liabilities of Loans Held for Sale Financing Facility (Details) - USD ($)
$ in Millions
Sep. 30, 2023
Jun. 30, 2023
Dec. 31, 2022
Sep. 30, 2022
Jun. 30, 2022
Dec. 31, 2021
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]            
Loans Held-for-sale, Fair Value Disclosure $ 944.7 $ 1,352.9 $ 617.8 $ 725.2 $ 683.1 $ 917.5