Annual report pursuant to Section 13 and 15(d)

LOANS AND LEASES AND ALLOWANCE FOR CREDIT LOSSES - ALLL Attributable to Loans by Portfolio Segment (Details)

v3.10.0.1
LOANS AND LEASES AND ALLOWANCE FOR CREDIT LOSSES - ALLL Attributable to Loans by Portfolio Segment (Details) - USD ($)
$ in Millions
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Attributable to loans collectively evaluated for impairment $ 729 $ 650    
Attributable to loans individually evaluated for impairment 43 41    
Total ALLL balance: 772 691 $ 638 $ 598
Collectively evaluated for impairment 73,714 68,760    
Financing Receivable Evaluated For Impairment 74,821 70,024    
Individually evaluated for impairment 1,107 1,223    
Purchase credit-impaired        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Collectively evaluated for impairment   41    
Commercial Portfolio Segment [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Attributable to loans collectively evaluated for impairment 509 450    
Attributable to loans individually evaluated for impairment 33 32    
Total ALLL balance: 542 482 451 399
Collectively evaluated for impairment 36,931 34,684    
Financing Receivable Evaluated For Impairment 37,447 35,332    
Individually evaluated for impairment 516 607    
Commercial Portfolio Segment [Member] | Purchase credit-impaired        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Collectively evaluated for impairment   41    
Consumer        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Attributable to loans collectively evaluated for impairment 220 200    
Attributable to loans individually evaluated for impairment 10 9    
Total ALLL balance: 230 209 $ 187 $ 199
Collectively evaluated for impairment 36,783 34,076    
Financing Receivable Evaluated For Impairment 37,374 34,692    
Individually evaluated for impairment $ 591 616    
Consumer | Purchase credit-impaired        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Collectively evaluated for impairment   $ 0