Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Other Guarantees (Details)

v3.6.0.2
Commitments and Contingencies - Other Guarantees (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Loss Contingencies [Line Items]    
FDIC premium expense, surcharge increase $ 200  
Expected increase per quarter in FDIC insurance expense 100  
Payment Protection Insurance    
Loss Contingencies [Line Items]    
Loss contingency accrual 252 $ 360
Provision (benefit) $ 145 319
Merchant Servicing Joint Venture    
Loss Contingencies [Line Items]    
Equity method investment ownership percentage 49.00%  
Carrying value of investment $ 2,900 3,000
Merchant Processing Servicers, Sponsored Entities    
Loss Contingencies [Line Items]    
Transactions processed and settled by sponsored entities 731,400 669,000
Losses as result of cardholder disputed transactions 33 22
Merchant escrow deposits held as collateral 188 181
Life Insurance Book Value Protection    
Loss Contingencies [Line Items]    
Notional amount of derivatives 13,900 13,800
Maximum potential exposure 3,200 3,100
Net fair value of bank-owned life insurance book value protection 4 12
Merchant Services | Merchant Processing Servicers, Sponsored Entities    
Loss Contingencies [Line Items]    
Maximum potential exposure 325,700 277,100
Other Guarantee    
Loss Contingencies [Line Items]    
Maximum potential exposure $ 6,700 $ 6,000