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Arrangements with Off-Balance Sheet Risk - Narrative (Details) - Contingent repurchase commitments
6 Months Ended 12 Months Ended
Jun. 30, 2024
Dec. 31, 2023
Minimum    
Guarantor Obligations [Line Items]    
Guarantor obligations, repurchase commitment, period post delivery 10 years 10 years
Maximum    
Guarantor Obligations [Line Items]    
Guarantor obligations, repurchase commitment, period post delivery 15 years 15 years