Quarterly report pursuant to Section 13 or 15(d)

ALLOWANCE FOR CREDIT LOSSES - Allowance Roll-forward (Details)

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ALLOWANCE FOR CREDIT LOSSES - Allowance Roll-forward (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]          
ALLL balance, beginning of period $ 2,177 $ 2,074 $ 2,121 $ 2,030  
Loan and lease charge-offs (131) (83) (322) (216)  
Recoveries of loans and leases previously charged-off 58 39 143 145  
Provision for loan and lease losses 104 80 266 151  
ALLL balance, end of period 2,208 2,110 2,208 2,110  
AULC balance, beginning of period 165 94 150 77  
Provision (benefit) for unfunded lending commitments (5) 26 10 43  
AULC balance, end of period 160 120 160 120  
ACL balance, end of period 2,368 2,230 2,368 2,230  
Commercial          
Financing Receivable, Allowance for Credit Loss [Roll Forward]          
ALLL balance, beginning of period 1,483 1,342 1,424 1,462  
Loan and lease charge-offs (85) (35) (190) (77)  
Recoveries of loans and leases previously charged-off 40 20 89 83  
Provision for loan and lease losses 66 87 181 (54)  
ALLL balance, end of period 1,504 1,414 1,504 1,414  
AULC balance, beginning of period 78 53 71 41  
Provision (benefit) for unfunded lending commitments (2) 8 5 20  
AULC balance, end of period 76 61 76 61  
ACL balance, end of period 1,580 1,475 1,580 1,475 $ 1,500
Consumer          
Financing Receivable, Allowance for Credit Loss [Roll Forward]          
ALLL balance, beginning of period 694 732 697 568  
Loan and lease charge-offs (46) (48) (132) (139)  
Recoveries of loans and leases previously charged-off 18 19 54 62  
Provision for loan and lease losses 38 (7) 85 205  
ALLL balance, end of period 704 696 704 696  
AULC balance, beginning of period 87 41 79 36  
Provision (benefit) for unfunded lending commitments (3) 18 5 23  
AULC balance, end of period 84 59 84 59  
ACL balance, end of period $ 788 $ 755 $ 788 $ 755 $ 776