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Loans and Card Member Receivables (Details 1) - USD ($) | Jun. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Accounts receivable segment information |  |
Card Member receivables | $ 37,553,000,000 | $ 57,413,000,000
Less: Reserve for credit losses | 519,000,000 | 619,000,000
Card Member receivables, net | 37,034,000,000 | 56,794,000,000
Variable Interest Entity, Primary Beneficiary [Member] |  |
Accounts receivable segment information |  |
Card Member receivables | 4,042,000,000 | 8,284,000,000
Global Consumer Services Group [Member] |  |
Accounts receivable segment information |  |
Card Member receivables | 14,977,000,000 | 22,844,000,000
Global Consumer Services Group [Member] | Variable Interest Entity, Primary Beneficiary [Member] |  |
Accounts receivable segment information |  |
Card Member receivables | 0 | 8,300,000,000
Global Commercial Services [Member] |  |
Accounts receivable segment information |  |
Card Member receivables | 22,576,000,000 | 34,569,000,000
Global Commercial Services [Member] | Variable Interest Entity, Primary Beneficiary [Member] |  |
Accounts receivable segment information |  |
Card Member receivables | $ 4,000,000,000.0 | $ 0

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