Annual report [Section 13 and 15(d), not S-K Item 405]

Fair Value Measurements - Nonrecurring Fair Value (Details)

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Fair Value Measurements - Nonrecurring Fair Value (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis      
Loans held-for-sale $ 2,214 $ 2,059  
Loans and leases 4,249 3,569  
Other assets 13,176 11,861  
Nonrecurring      
Gains (Losses)      
Loans held-for-sale (211) (246) $ (387)
Loans and leases (29) (45) (48)
Foreclosed properties (44) (6) (6)
Other assets (27) (252) (91)
Loss on loans and leases written down to zero 8 10 $ 15
Nonrecurring | Government Guaranteed Mortgage Loans upon Foreclosure Receivable      
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis      
Foreclosed properties 16 31  
Nonrecurring | Level 2      
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis      
Loans held-for-sale 63 77  
Loans and leases 0 0  
Foreclosed properties 0 0  
Other assets 2 31  
Nonrecurring | Level 3      
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis      
Loans held-for-sale 2,652 2,793  
Loans and leases 119 153  
Foreclosed properties 93 48  
Other assets $ 236 $ 898