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Loans and Card Member Receivables (Details 4) account in Thousands, $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 USD ($) account | Mar. 31, 2020 USD ($) account
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of Accounts | account | 46 | 27
Outstanding Balances | $ | $ 412 | $ 269
Card Member Loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of Accounts | account | 38 | 24
Outstanding Balances | $ | $ 287 | $ 195
Average Interest Rate Reduction (as a percentage) | 13.00% | 14.00%
Card Member Receivables |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of Accounts | account | 7 | 3
Outstanding Balances | $ | $ 117 | $ 74
Average Payment Term Extension (in months) | 18 months | 25 months
Other Loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of Accounts | account | 1 |
Outstanding Balances | $ | $ 8 |
Average Interest Rate Reduction (as a percentage) | 3.00% |
Average Payment Term Extension (in months) | 15 months |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524 + Details
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- Definition Amount, before troubled debt restructuring, of financing receivable to be modified. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524 + Details
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