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Variable Interest Entities - Additional Information (Details) $ in Millions | Dec. 31, 2023 USD ($) Property | Dec. 31, 2022 Property
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Number of Variable Interest Entities | Property | 33 | 35
Investments in Unconsolidated Entities [Member] | Non-Consolidated VIEs [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Maximum exposure to loss, funding commitments | $ 49.4 |
Mortgage Revenue Bonds [Member] | Non-Consolidated VIEs [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Maximum exposure to loss, funding commitments | 125.6 |
Taxable Mortgage Revenue Bonds [Member] | Non-Consolidated VIEs [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Maximum exposure to loss, funding commitments | 16.4 |
Governmental Issuer Loans [Member] | Non-Consolidated VIEs [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Maximum exposure to loss, funding commitments | 51.1 |
Taxable Governmental Issuer Loans [Member] | Non-Consolidated VIEs [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Maximum exposure to loss, funding commitments | 53.6 |
Property Loans [Member] | Non-Consolidated VIEs [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Maximum exposure to loss, funding commitments | $ 19.9 |

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