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Loans and Accounts Receivable (Details 6) pure in Thousands, $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 USD ($) M bp | Jun. 30, 2017 USD ($) M bp | Jun. 30, 2018 USD ($) M bp | Jun. 30, 2017 USD ($) M bp
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Accounts (in thousands) | 13 | 8 | 25 | 18
Aggregated Outstanding Balance | $ 113 | $ 64 | $ 223 | $ 149
Card Member Loans [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Accounts (in thousands) | 12 | 7 | 23 | 15
Aggregated Outstanding Balance | $ 88 | $ 46 | $ 169 | $ 103
Average Interest Rate Reduction By Class Of Financial Instrument | bp | 12 | 10 | 12 | 11
Card Member Receivables [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Accounts (in thousands) | 1 | 1 | 2 | 3
Aggregated Outstanding Balance | $ 25 | $ 18 | $ 54 | $ 46
Average payment term extension | M | 28 | 32 | 28 | 26

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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=84173941&loc=SL6953676-111524 + Details
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