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Securitizations and Variable Interests Entities - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2019
Servicing Assets at Fair Value [Line Items] |  |  |  |
Average period to securitization | 30 days |  |  |
Financing Receivable, Threshold Period Past Due | 60 days | 60 days |  |
Mortgages Held-for-sale, Fair Value Disclosure | $ 1,290.2 | $ 674.2 |  |
MSR Excess Spread Participation Interest Percentage |  |  |  | 100.00%
Variable Interest Entity, Primary Beneficiary | Warehouse Mortgage Loan Financing Facility |  |  |  |
Servicing Assets at Fair Value [Line Items] |  |  |  |
Deposit Liabilities, Collateral Issued, Financial Instruments | 200.0 | 150.0 |  |
Mortgages Held-for-sale, Fair Value Disclosure | 375.4 | 119.5 |  |
Variable Interest Entity, Primary Beneficiary | Mortgage Warehouse Agreement [Member] |  |  |  |
Servicing Assets at Fair Value [Line Items] |  |  |  |
Mortgages Held-for-sale, Fair Value Disclosure | $ 200.0 | $ 150.1 |  |
Ginnie Mae |  |  |  |
Servicing Assets at Fair Value [Line Items] |  |  |  |
Percentage of transferred residential loans serviced 60 days or more past due | 7.00% | 8.00% |  |
Financing Receivable, Threshold Period Past Due | 60 days |  |  |
Forward Loans |  |  |  |
Servicing Assets at Fair Value [Line Items] |  |  |  |
MSRs retained | $ 247.6 | $ 183.0 | $ 234.7 |
Percentage of transferred residential loans serviced 60 days or more past due | 2.70% | 2.80% |  |

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