Annual report pursuant to Section 13 and 15(d)

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, 2023
Dec. 31, 2022
Dec. 31, 2021
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis      
Loans held-for-sale $ 2,059 $ 1,115  
Loans and leases 3,569 5,771  
Other assets (4) 11,861 9,594  
Nonrecurring      
Gains (Losses)      
Loans held-for-sale (246) (387) $ (44)
Loans and leases (45) (48) (60)
Foreclosed properties (6) (6) (2)
Other assets (252) (91) (492)
Loss on loans and leases written down to zero 10 15 $ 24
Nonrecurring | Government Guaranteed Mortgage Loans upon Foreclosure Receivable      
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis      
Foreclosed properties 31 60  
Nonrecurring | Level 2      
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis      
Loans held-for-sale 77 1,979  
Loans and leases 0 0  
Foreclosed properties 0 0  
Other assets (4) 31 88  
Nonrecurring | Level 3      
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis      
Loans held-for-sale 2,793 3,079  
Loans and leases 153 166  
Foreclosed properties 48 7  
Other assets (4) $ 898 $ 165