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Discontinued Operations - Additional Information (Detail) (USD $)
3 Months Ended 9 Months Ended 3 Months Ended 3 Months Ended 9 Months Ended 15 Months Ended
Sep. 30, 2011
Credit Card Receivables [Member]
Sep. 30, 2012
Credit Card Receivables [Member]
Sep. 30, 2011
Credit Card Receivables [Member]
Dec. 31, 2010
Bank Note [Member]
Sep. 30, 2010
Bank Note [Member]
Sep. 30, 2012
Bank Note [Member]
Dec. 31, 2011
Bank Note [Member]
Oct. 31, 2010
Bank Note [Member]
Sep. 30, 2011
Bank Note [Member]
Credit Card Receivables [Member]
Sep. 30, 2012
Bank Note [Member]
Credit Card Receivables [Member]
Sep. 30, 2011
Bank Note [Member]
Credit Card Receivables [Member]
Sep. 30, 2012
Bank Note [Member]
Credit Card Receivables [Member]
May 01, 2012
Bank Note [Member]
Credit Card Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]                          
Amortized cost or fair value adjustments $ 159,000,000 $ 440,000,000 $ 159,000,000   $ 12,000,000       $ 159,000,000 $ 440,000,000 $ 159,000,000 $ 1,000,000,000  
Cash consideration received upon sale of discontinued operations                         19,200,000,000
Closure costs primarily relating to termination and other employee       14,000,000                  
Assets and liabilities of Banknotes Business reported of discontinued operations         23,000,000 0 0            
Allocation of goodwill as held for sale         21,000,000                
Cash consideration received upon sale of discontinued operations               $ 11,000,000