Quarterly report pursuant to Section 13 or 15(d)

ALLOWANCE FOR CREDIT LOSSES - Allowance for Credit Losses (Details)

v3.20.2
ALLOWANCE FOR CREDIT LOSSES - Allowance for Credit Losses (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Jun. 30, 2020
Jan. 01, 2020
Dec. 31, 2019
Jun. 30, 2019
Dec. 31, 2018
Financing Receivable, Allowance for Credit Loss [Roll Forward]                  
Total ALLL balance $ 1,796 $ 783 $ 1,796 $ 783 $ 1,702   $ 783 $ 774 $ 772
Financing Receivable, Allowance for Credit Loss, Writeoff (141) (102) (400) (269)          
Allowance for Loan and Lease Loss, Recovery of Bad Debts 28 29 63 77          
Provision For (Reduction In Allowance) Loan and Lease Losses. 207 82 959 203          
Provision (reduction in allowance) for unfunded loan commitments and letters of credit (30) 0 (14) 5          
Additions to Unfunded Loan Commitments and Letters of Credit Allowance (7)   10            
AULC Balance 82 101 82 101 119   104 101 96
Acl Balance End Of Period 1,878 884 1,878 884   $ 887      
Allowance for credit loss, change since adoption     991            
Provision increase related to COVID-10 pandemic and other     598            
Shareholders’ equity (12,917) (11,909) (12,917) (11,909) (12,314)   (11,795) (11,668) (11,102)
Retained Earnings [Member]                  
Financing Receivable, Allowance for Credit Loss [Roll Forward]                  
Shareholders’ equity (1,752) (1,946) (1,752) (1,946) (1,633)   (2,088) (1,750) (1,361)
ASU 2016-13                  
Financing Receivable, Allowance for Credit Loss [Roll Forward]                  
Total ALLL balance             391    
AULC Balance             2    
Shareholders’ equity             306    
ASU 2016-13 | Retained Earnings [Member]                  
Financing Receivable, Allowance for Credit Loss [Roll Forward]                  
Cumulative Effect Of New Accounting Principle In Period Of Adoption Deferred Taxes           87      
Shareholders’ equity             306    
Consumer                  
Financing Receivable, Allowance for Credit Loss [Roll Forward]                  
Total ALLL balance 533 222 533 222 533   231 214 230
Financing Receivable, Allowance for Credit Loss, Writeoff (40) (49) (128) (145)          
Allowance for Loan and Lease Loss, Recovery of Bad Debts 16 14 43 42          
Provision For (Reduction In Allowance) Loan and Lease Losses. 24 43 176 95          
Provision (reduction in allowance) for unfunded loan commitments and letters of credit (3) 0 (7) 0          
Additions to Unfunded Loan Commitments and Letters of Credit Allowance 0   0            
AULC Balance 35 2 35 2 38   2 2 2
Acl Balance End Of Period 568 224 568 224          
Consumer | ASU 2016-13                  
Financing Receivable, Allowance for Credit Loss [Roll Forward]                  
Total ALLL balance             211    
AULC Balance             40    
Commercial and industrial                  
Financing Receivable, Allowance for Credit Loss [Roll Forward]                  
Total ALLL balance 1,263 561 1,263 561 1,169   552 560 542
Financing Receivable, Allowance for Credit Loss, Writeoff (101) (53) (272) (124)          
Allowance for Loan and Lease Loss, Recovery of Bad Debts 12 15 20 35          
Provision For (Reduction In Allowance) Loan and Lease Losses. 183 39 783 108          
Provision (reduction in allowance) for unfunded loan commitments and letters of credit (27) 0 (7) 5          
Additions to Unfunded Loan Commitments and Letters of Credit Allowance (7)   (10)            
AULC Balance 47 99 47 99 $ 81   102 $ 99 $ 94
Acl Balance End Of Period $ 1,310 $ 660 $ 1,310 $ 660          
Commercial and industrial | ASU 2016-13                  
Financing Receivable, Allowance for Credit Loss [Roll Forward]                  
Total ALLL balance             180    
AULC Balance             $ (38)    
Cumulative Effect Period Of Adoption Adjustment Member [Member]                  
Financing Receivable, Allowance for Credit Loss [Roll Forward]                  
Financing Receivable Allowance For Credit Loss Off Balance Sheet Credit Loss Liability           (2)      
Financing Receivable Allowance For Credit Loss Including Off Balance Sheet Credit Loss Liability           (393)      
Cumulative Effect Period Of Adoption Adjustment Member [Member] | Consumer                  
Financing Receivable, Allowance for Credit Loss [Roll Forward]                  
Financing Receivable Allowance For Credit Loss Including Off Balance Sheet Credit Loss Liability           (211)      
Cumulative Effect Period Of Adoption Adjustment Member [Member] | Commercial and industrial                  
Financing Receivable, Allowance for Credit Loss [Roll Forward]                  
Financing Receivable Allowance For Credit Loss Including Off Balance Sheet Credit Loss Liability           $ (180)