Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.2
Outstanding Loans and Leases and Allowance for Credit Losses - Allowance for Credit Losses (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jan. 01, 2020
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2020
Jun. 30, 2019
Apr. 01, 2020
Dec. 31, 2019
Apr. 01, 2019
Jan. 01, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]                    
Allowance for credit losses   $ 21,091 $ 10,333 $ 21,091 $ 21,091 $ 10,333        
Allowance for loan and lease losses   19,389 9,527 19,389 19,389 9,527 $ 15,766   $ 9,577 $ 9,601
Reserve for unfunded lending commitments $ 1,123 1,702 806 1,702 1,702 806 1,360   802 797
Reserve for unfunded lending commitments, period increase (decrease)         579          
Loan and leases receivable, allowance, period increase (decrease)         7,000          
Outstanding loans and Leases, period increase (decrease), excluding loans accounted for under the fair value option       14,700            
Financing receivable, before credit loss allowance   998,944   998,944 998,944     $ 983,426    
Increase (decrease) in provision for credit losses including unfunded lending commitments   4,300   8,000            
Provision for credit losses   5,117 857 9,878   1,870        
Commercial reservable criticized utilized exposure, amount   $ 26,000   $ 26,000 $ 26,000     $ 11,500    
Commercial reservable criticized utilized exposure, percent   4.51%   4.51% 4.51%     2.09%    
Nonperforming Loans and Leases   $ 4,393   $ 4,393 $ 4,393     $ 3,552    
Credit card and other consumer                    
Financing Receivable, Allowance for Credit Loss [Line Items]                    
Allowance for credit losses   10,122 3,970 10,122 10,122 3,970        
Allowance for loan and lease losses   10,122 3,970 10,122 10,122 3,970 8,258   3,934 3,874
Reserve for unfunded lending commitments 0 0 0 0 0 0 0   0 0
Loan and leases receivable, allowance, period increase (decrease)         2,700          
Consumer real estate                    
Financing Receivable, Allowance for Credit Loss [Line Items]                    
Allowance for credit losses   974 719 974 974 719        
Allowance for loan and lease losses   833 719 833 833 719 808   822 928
Reserve for unfunded lending commitments 119 141 0 141 141 0 149   0 0
Loan and leases receivable, allowance, period increase (decrease)         393          
Outstanding loans and Leases, period increase (decrease), excluding loans accounted for under the fair value option       (14,300)            
Financing receivable, before credit loss allowance   38,396   38,396 38,396          
Commercial portfolio                    
Financing Receivable, Allowance for Credit Loss [Line Items]                    
Allowance for credit losses   9,995 5,644 9,995 9,995 5,644        
Allowance for loan and lease losses   8,434 4,838 8,434 8,434 4,838 6,700   4,821 4,799
Reserve for unfunded lending commitments 1,004 1,561 $ 806 1,561 1,561 $ 806 $ 1,211   $ 802 $ 797
Loan and leases receivable, allowance, period increase (decrease)         3,900          
Outstanding loans and Leases, period increase (decrease), excluding loans accounted for under the fair value option       29,000            
Financing receivable, before credit loss allowance   547,372   547,372 547,372     517,657    
Nonperforming Loans and Leases   2,202   2,202 2,202     $ 1,499    
Cumulative Effect, Period of Adoption, Adjustment                    
Financing Receivable, Allowance for Credit Loss [Line Items]                    
Allowance for credit losses $ 3,300                  
Loans and leases receivable, percentage increase in allowance 32.00%                  
Allowance for loan and lease losses $ 2,900                  
Reserve for unfunded lending commitments 310                  
Cumulative Effect, Period of Adoption, Adjustment | Credit card and other consumer                    
Financing Receivable, Allowance for Credit Loss [Line Items]                    
Allowance for loan and lease losses 3,100                  
Cumulative Effect, Period of Adoption, Adjustment | Consumer real estate                    
Financing Receivable, Allowance for Credit Loss [Line Items]                    
Reserve for unfunded lending commitments, period increase (decrease)         119          
Cumulative Effect, Period of Adoption, Adjustment | Commercial portfolio                    
Financing Receivable, Allowance for Credit Loss [Line Items]                    
Reserve for unfunded lending commitments, period increase (decrease)         191          
Cumulative Effect, Period of Adoption, Adjusted Balance                    
Financing Receivable, Allowance for Credit Loss [Line Items]                    
Allowance for loan and lease losses 12,358                  
Cumulative Effect, Period of Adoption, Adjusted Balance | Credit card and other consumer                    
Financing Receivable, Allowance for Credit Loss [Line Items]                    
Allowance for loan and lease losses 7,430                  
Cumulative Effect, Period of Adoption, Adjusted Balance | Consumer real estate                    
Financing Receivable, Allowance for Credit Loss [Line Items]                    
Allowance for loan and lease losses 440                  
Cumulative Effect, Period of Adoption, Adjusted Balance | Commercial portfolio                    
Financing Receivable, Allowance for Credit Loss [Line Items]                    
Allowance for loan and lease losses $ 4,488                  
Smalll Business Administration (SBA), CARES Act, Paycheck Protection Program                    
Financing Receivable, Allowance for Credit Loss [Line Items]                    
Financing receivable, before credit loss allowance   $ 25,100   $ 25,100 $ 25,100