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Loans and Accounts Receivable (Details 6) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 USD ($) | Jun. 30, 2018 USD ($) | Jun. 30, 2019 USD ($) | Jun. 30, 2018 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Accounts | 19,000 | 13,000 | 38,000 | 25,000
Outstanding Balances | $ 187 | $ 113 | $ 355 | $ 223
Card Member Loans [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Accounts | 17,000 | 12,000 | 34,000 | 23,000
Outstanding Balances | $ 137 | $ 88 |  | $ 169
Average Interest Rate Reduction (as a percentage) | 13.00% | 12.00% | 13.00% | 12.00%
Card Member Receivables [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Accounts |  | 1,000 | 4,000 | 2,000
Outstanding Balances | $ 50 | $ 25 | $ 90 | $ 54
Average Payment Term Extension (in months) | 26 months | 28 months | 27 months | 28 months

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