Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Other Guarantees (Details)

v3.7.0.1
Commitments and Contingencies - Other Guarantees (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Merchant Servicing Joint Venture          
Loss Contingencies [Line Items]          
Equity method investment ownership percentage 49.00%   49.00%    
Carrying value of investment $ 2,900   $ 2,900   $ 2,900
Merchant Processing Servicers, Sponsored Entities          
Loss Contingencies [Line Items]          
Transactions processed and settled by sponsored entities 204,600 $ 178,400 391,400 $ 337,800  
Losses as result of cardholder disputed transactions 8 $ 8 15 $ 14  
Life Insurance Book Value Protection          
Loss Contingencies [Line Items]          
Notional amount of derivatives 14,000   14,000   13,900
Maximum potential exposure 3,200   3,200   3,200
Net fair value of bank-owned life insurance book value protection 2   2   4
Merchant Services | Merchant Processing Servicers, Sponsored Entities          
Loss Contingencies [Line Items]          
Maximum potential exposure 323,800   323,800   325,700
Other Guarantee          
Loss Contingencies [Line Items]          
Maximum potential exposure $ 6,600   $ 6,600   $ 6,700