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Loans and Accounts Receivable (Details 6) pure in Thousands, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 USD ($) M bp | Sep. 30, 2017 USD ($) M bp | Sep. 30, 2018 USD ($) M bp | Sep. 30, 2017 USD ($) M bp
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Accounts (in thousands) | 14 | 9 | 40 | 27
Aggregated Outstanding Balance | $ 122 | $ 75 | $ 345 | $ 224
Card Member Loans [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Accounts (in thousands) | 13 | 8 | 36 | 23
Aggregated Outstanding Balance | $ 98 | $ 57 | $ 267 | $ 160
Average Interest Rate Reduction By Class Of Financial Instrument | bp | 12 | 9 | 12 | 10
Card Member Receivables [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Accounts (in thousands) | 1 | 1 | 4 | 4
Aggregated Outstanding Balance | $ 24 | $ 18 | $ 78 | $ 64
Average payment term extension | M | 27 | 31 | 28 | 27

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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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