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Loans and Accounts Receivable (Details 5) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2017 | Mar. 31, 2016
Financing Receivable Impaired [Line Items] |  |
Average balance of impaired loans | $ 843 | $ 686
Interest income recognized | 24 | 19
U S Consumer Services [Member] | Card Member Loans [Member] |  |
Financing Receivable Impaired [Line Items] |  |
Average balance of impaired loans | 616 | 505
Interest income recognized | 16 | 12
U S Consumer Services [Member] | Card Member Receivables [Member] |  |
Financing Receivable Impaired [Line Items] |  |
Average balance of impaired loans | 18 | 14
Interest income recognized | 0 | 0
International Consumer and Network Services [Member] | Card Member Loans [Member] |  |
Financing Receivable Impaired [Line Items] |  |
Average balance of impaired loans | 53 | 53
Interest income recognized | 4 | 4
Global Commercial Services [Member] | Card Member Loans [Member] |  |
Financing Receivable Impaired [Line Items] |  |
Average balance of impaired loans | 116 | 92
Interest income recognized | 4 | 3
Global Commercial Services [Member] | Card Member Receivables [Member] |  |
Financing Receivable Impaired [Line Items] |  |
Average balance of impaired loans | 40 | 22
Interest income recognized | $ 0 | $ 0

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