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Accounts Receivable and Loans (Details 5) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013
Financing Receivable Impaired [Line Items] |  |  |  |
Average balance of impaired loans | $ 827 | $ 1,159 | $ 871 | $ 1,210
Interest income recognized | 13 | 14 | 33 | 30
U S Card Services [Member] | Card Member Loans [Member] |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |
Average balance of impaired loans | 715 | 999 | 760 | 1,041
Interest income recognized | 9 | 10 | 25 | 22
U S Card Services [Member] | Card Member Receivables [Member] |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |
Average balance of impaired loans | 47 | 91 | 47 | 100
Interest income recognized | 0 | 0 | 0 | 0
International Card Services [Member] | Card Member Loans [Member] |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |
Average balance of impaired loans | 65 | 69 | 64 | 69
Interest income recognized | $ 4 | $ 4 | $ 8 | $ 8

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- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 + Details
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