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Accounts Receivable and Loans (Details 5) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 Account | Dec. 31, 2012 Account | Dec. 31, 2011 Account
Financing Receivable, Modifications [Line Items] |  |  |
Number of Accounts (in thousands) | 80,000 | 143,000 | 197,000
Aggregated Outstanding Balance | $ 695 | $ 1,204 | $ 1,512
Accounts Receivable and Loans Textuals [Abstract] |  |  |
Difference between pre- and post-modification outstanding balances | 4 | 24 | 59
Card Member Loans [Member] | U S Card Services [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Number of Accounts (in thousands) | 60,000 | 106,000 | 147,000
Aggregated Outstanding Balance | 448 | 779 | 1,110
Card Member Receivables [Member] | U S Card Services [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Number of Accounts (in thousands) | 20,000 | 37,000 | 50,000
Aggregated Outstanding Balance | $ 247 | $ 425 | $ 402

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- Definition Difference between pre-modification and post-modification amounts of investment in financing receivables modified by troubled debt restructurings. + References No definition available. + Details
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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953676-111524 + Details
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- Definition Post-modification amount of investment in financing receivables modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953676-111524 + Details
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