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Guarantees and Contingent Liabilities - Additional Information (Detail) (USD $)
6 Months Ended 3 Months Ended
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Jun. 30, 2014
Merchant processing [Member]
Jun. 30, 2014
Asset sales [Member]
Dec. 31, 2013
Asset sales [Member]
Jun. 30, 2014
Visa Class B [Member]
Guarantees And Contingent Liabilities (Textual) [Abstract]                    
Liability related to remaining Visa Litigation, carrying amount $ 19,000,000                  
Number of shares sold                   3,000,000
Remaining shares held by the Company                   9,600,000
Value of airline tickets purchased to deliver at future date             8,700,000,000      
Company held collateral in escrow deposits, letters of credit and indemnities from financial institutions and liens on various assets             707,000,000      
Representation and warranty reserve 69,000,000 75,000,000 83,000,000 190,000,000 233,000,000 240,000,000   69,000,000 83,000,000  
Unresolved representation and warranty claims               35,000,000 89,000,000  
Legal settlement with U.S. Department of Justice ("DOJ") $ 200,000,000