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Commitments and Contingencies - Narrative (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2025 | Dec. 31, 2024
Loss Contingencies [Line Items] |  |  |
Reserve for unfunded commitments | $ 50,700,000 | $ 50,700,000 | $ 52,500,000
Minimum |  |  |
Loss Contingencies [Line Items] |  |  |
Total letters of credit and unfunded lending commitments | 0 | 0 |
Maximum |  |  |
Loss Contingencies [Line Items] |  |  |
Total letters of credit and unfunded lending commitments | 10,000,000 | 10,000,000 |
Total letters of credit and unfunded lending commitments |  |  |
Loss Contingencies [Line Items] |  |  |
Guarantor obligations, monetary amount | 28,070,000,000.00 | 85,400,000,000 |
Total letters of credit and unfunded lending commitments | $ 15,722,229,000 | $ 15,722,229,000 | $ 15,620,895,000

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