XML 83 R85.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Loans and Allowance for Credit Losses, Loans by Credit Impairment Methodology (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]            
Total allowance for credit losses $ 10,456 $ 10,707 $ 11,960 $ 12,540 $ 12,512 $ 13,169
Loans 962,265 953,110 956,770 967,604 916,559  
Total Commercial [Member]            
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]            
Total allowance for credit losses 6,245 6,417 6,632      
Loans 515,719 513,405 503,388 506,536 456,583  
Total Consumer [Member]            
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]            
Total allowance for credit losses 4,211 4,290 5,328      
Loans 446,546 439,705 $ 453,382 $ 461,068 $ 459,976  
Non-PCI [Member]            
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]            
Allowance for Credit Losses, Collectively evaluated 9,142 9,264        
Allowance for Credit Losses, Individually evaluated 1,314 1,443        
Financing Receivable, Collectively evaluated 948,667 931,754        
Financing Receivable, Individually evaluated 13,030 16,347        
Non-PCI [Member] | Total Commercial [Member]            
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]            
Allowance for Credit Losses, Collectively evaluated 5,778 5,903        
Allowance for Credit Losses, Individually evaluated 467 514        
Financing Receivable, Collectively evaluated 512,586 510,180        
Financing Receivable, Individually evaluated 3,133 3,221        
Loans 515,719 513,401        
Non-PCI [Member] | Total Consumer [Member]            
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]            
Allowance for Credit Losses, Collectively evaluated 3,364 3,361        
Allowance for Credit Losses, Individually evaluated 847 929        
Financing Receivable, Collectively evaluated 436,081 421,574        
Financing Receivable, Individually evaluated 9,897 13,126        
Loans 445,978 434,700        
PCI [Member]            
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]            
Total allowance for credit losses 0 0        
Loans 568 5,009        
PCI [Member] | Total Commercial [Member]            
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]            
Total allowance for credit losses 0 0        
Loans 0 4        
PCI [Member] | Total Consumer [Member]            
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]            
Total allowance for credit losses 0 0        
Loans $ 568 $ 5,005