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Securitizations and Variable Interests Entities - Summary of Cash Flows Received from and Paid to Securitization Trusts Related to Transfers Accounted for as Sales Outstanding (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Transfers and Servicing [Abstract]      
Proceeds received from securitizations $ 17,027.0 $ 19,293.2 $ 7,533.3
Servicing fees collected 91.8 63.7 47.2
Purchases of previously transferred assets, net of claims reimbursed (11.4) (17.4) (6.9)
Cash flows between transferor and transferee proceeds and payment related to transfers accounted for sales $ 17,107.4 $ 19,339.5 $ 7,573.6