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Mortgage Servicing - Schedule of Composition of Servicing UPB (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Servicing Assets at Fair Value [Line Items] |  |  |
UPB | 169,700.0 | 199,600.0 |
Servicing Asset at Fair Value, Amount | $ 2,272.2 | $ 2,665.2 | $ 2,250.1
UPB of loans transferred | $ 46,810.1 | $ 37,571.1 |
NRZ |  |  |
Servicing Assets at Fair Value [Line Items] |  |  |
UPB | 9,900.0 |  |
Owned Mortgage Servicing Rights |  |  |
Servicing Assets at Fair Value [Line Items] |  |  |
UPB | 122,700.0 | 126,200.0 |
Servicing Asset at Fair Value, Amount | $ 1,604.6 | $ 1,710.6 |
MAV Transferred Mortgage Servicing Rights |  |  |
Servicing Assets at Fair Value [Line Items] |  |  |
UPB | 28,800.0 | 26,100.0 |
Servicing Asset at Fair Value, Amount | $ 422.8 | $ 353.4 |

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