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Commitments and Contingencies - Narrative (Details) - USD ($)
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Loss Contingencies [Line Items]      
Reserve for unfunded commitments $ 50,700,000   $ 52,500,000
Minimum      
Loss Contingencies [Line Items]      
Total letters of credit and unfunded lending commitments 0    
Maximum      
Loss Contingencies [Line Items]      
Total letters of credit and unfunded lending commitments 10,000,000    
Total letters of credit and unfunded lending commitments      
Loss Contingencies [Line Items]      
Guarantor obligations, monetary amount 28,570,000,000 $ 27,890,000,000  
Total letters of credit and unfunded lending commitments $ 15,697,567,000   $ 15,620,895,000