Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Other Guarantees (Details)

v3.19.2
Commitments and Contingencies - Other Guarantees (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 5 Months Ended 6 Months Ended
Jun. 30, 2019
Sep. 30, 2019
Jun. 30, 2019
Jun. 30, 2018
May 31, 2019
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Dec. 31, 2009
Merchant Servicing Joint Venture                  
Loss Contingencies [Line Items]                  
Equity method investment, ownership percentage                 49.00%
Carrying value of investment $ 2,700   $ 2,700     $ 2,700   $ 2,800  
Right to terminate investment, period before end of term 4 months       1 year        
Merchant Processing Servicers, Sponsored Entities                  
Loss Contingencies [Line Items]                  
Transactions processed and settled by sponsored entities     235,700 $ 226,100   441,300 $ 426,800    
Losses as result of cardholder disputed transactions     7 $ 9   11 $ 17    
Life Insurance Book Value Protection                  
Loss Contingencies [Line Items]                  
Notional amount of derivatives $ 7,600   7,600     7,600   9,800  
Maximum potential exposure 1,100   1,100     1,100   1,500  
Merchant Services | Merchant Processing Servicers, Sponsored Entities                  
Loss Contingencies [Line Items]                  
Maximum potential exposure 356,600   356,600     356,600   348,100  
Other Guarantee                  
Loss Contingencies [Line Items]                  
Maximum potential exposure $ 7,200   $ 7,200     $ 7,200   $ 5,900  
Scenario, Forecast | Minimum | Merchant Servicing Joint Venture                  
Loss Contingencies [Line Items]                  
Equity method investment, pre-tax impairment charge   $ 1,700              
Decrease in common equity tier 1   0.09%              
Scenario, Forecast | Maximum | Merchant Servicing Joint Venture                  
Loss Contingencies [Line Items]                  
Equity method investment, pre-tax impairment charge   $ 2,100              
Decrease in common equity tier 1   0.11%