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Commitments and Contingencies (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2023 | Dec. 31, 2022
Loss Contingencies [Line Items] |  |
Funded loans unpaid principal | $ 41,100.0 |
Letters of credit outstanding | 236.4 |
Accrued loan loss | 68.1 | $ 65.1
Assets available for recourse | 981.8 |
Guarantees total | 198.4 |
Commitments to investment in future real estate investment | $ 116.9 |
Maximum Future Commitments Equity In Real Estate Investment, Percent | 2.00% |
Commitments to investment in future real estate investment | 0.50 |
Commitment to investment in consolidated projects | $ 200.7 |
Commitments to investment in unconsolidated real estate subsidiary | 95.5 |
Warehouse Receivable |  |
Loss Contingencies [Line Items] |  |
Warehouse receivables | 529.2 |
Funded Loan Subject to Loss Sharing Arrangements |  |
Loss Contingencies [Line Items] |  |
Funded loans unpaid principal | 37,500.0 |
Letters of credit outstanding | 140.0 | 113.0
SBL Program |  |
Loss Contingencies [Line Items] |  |
Letters of credit outstanding | $ 5.0 | $ 5.0
Percentage of maximum original principal amount loan loss | 10.00% |
Funded Loan Not Subject to Loss Sharing Arrangements |  |
Loss Contingencies [Line Items] |  |
Letters of credit outstanding | $ 145.0 |

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