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 ($)
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Payment Protection Insurance      
Loss Contingencies [Line Items]      
Loss contingency accrual $ 225,000,000   $ 252,000,000
Provision (benefit) $ 0 $ 0  
Merchant Servicing Joint Venture      
Loss Contingencies [Line Items]      
Equity method investment ownership percentage 49.00%    
Carrying value of investment $ 2,900,000,000   2,900,000,000
Merchant Processing Servicers, Sponsored Entities      
Loss Contingencies [Line Items]      
Transactions processed and settled by sponsored entities 186,800,000,000 159,400,000,000  
Losses as result of cardholder disputed transactions 7,000,000 $ 6,000,000  
Escrow deposits held as collateral by sponsored entities 210,000,000   188,000,000
Life Insurance Book Value Protection      
Loss Contingencies [Line Items]      
Notional amount of derivatives 14,000,000,000   13,900,000,000
Maximum potential exposure 3,200,000,000   3,200,000,000
Net fair value of bank-owned life insurance book value protection 3,000,000   4,000,000
Merchant Services | Merchant Processing Servicers, Sponsored Entities      
Loss Contingencies [Line Items]      
Maximum potential exposure 322,800,000,000   325,700,000,000
Other Guarantee      
Loss Contingencies [Line Items]      
Maximum potential exposure $ 6,400,000,000   $ 6,700,000,000