Annual report pursuant to Section 13 and 15(d)

Outstanding Loans and Leases and Allowance for Credit Losses - Allowance by Portfolio Segment (Details)

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Outstanding Loans and Leases and Allowance for Credit Losses - Allowance by Portfolio Segment (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Allowance for Loan and Lease Losses [Roll Forward]      
Allowance for loan and lease losses, beginning balance $ 12,387 $ 18,802 $ 12,358
Loans and leases charged off (3,439) (3,797) (5,419)
Recoveries of loans and leases previously charged off 1,267 1,554 1,298
Net charge-offs (2,172) (2,243) (4,121)
Provision for loan and lease losses 2,460 (4,173) 10,565
Other 7 1 0
Allowance for loan and lease losses, ending balance 12,682 12,387 18,802
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]      
Reserve for unfunded lending commitments, beginning balance 1,456 1,878 1,123
Provision for unfunded lending commitments 83 (421) 755
Other 1 (1)  
Reserve for unfunded lending commitments, ending balance 1,540 1,456 1,878
Allowance for credit losses 14,222 13,843 20,680
Consumer real estate      
Allowance for Loan and Lease Losses [Roll Forward]      
Allowance for loan and lease losses, beginning balance 557 858 440
Loans and leases charged off (206) (78) (98)
Recoveries of loans and leases previously charged off 224 225 201
Net charge-offs 18 147 103
Provision for loan and lease losses (164) (449) 307
Other 9 1 8
Allowance for loan and lease losses, ending balance 420 557 858
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]      
Reserve for unfunded lending commitments, beginning balance 96 137 119
Provision for unfunded lending commitments (3) (41) 18
Other 1 0  
Reserve for unfunded lending commitments, ending balance 94 96 137
Allowance for credit losses 514 653 995
Credit card and other consumer      
Allowance for Loan and Lease Losses [Roll Forward]      
Allowance for loan and lease losses, beginning balance 6,476 9,213 7,430
Loans and leases charged off (2,755) (3,000) (3,646)
Recoveries of loans and leases previously charged off 882 1,006 891
Net charge-offs (1,873) (1,994) (2,755)
Provision for loan and lease losses 2,215 (744) 4,538
Other (1) 1 0
Allowance for loan and lease losses, ending balance 6,817 6,476 9,213
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]      
Reserve for unfunded lending commitments, beginning balance 0 0 0
Provision for unfunded lending commitments 0 0 0
Other 0 0  
Reserve for unfunded lending commitments, ending balance 0 0 0
Allowance for credit losses 6,817 6,476 9,213
Commercial      
Allowance for Loan and Lease Losses [Roll Forward]      
Allowance for loan and lease losses, beginning balance 5,354 8,731 4,488
Loans and leases charged off (478) (719) (1,675)
Recoveries of loans and leases previously charged off 161 323 206
Net charge-offs (317) (396) (1,469)
Provision for loan and lease losses 409 (2,980) 5,720
Other (1) (1) (8)
Allowance for loan and lease losses, ending balance 5,445 5,354 8,731
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]      
Reserve for unfunded lending commitments, beginning balance 1,360 1,741 1,004
Provision for unfunded lending commitments 86 (380) 737
Other 0 (1)  
Reserve for unfunded lending commitments, ending balance 1,446 1,360 1,741
Allowance for credit losses $ 6,891 $ 6,714 $ 10,472