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Loans and Card Member Receivables (Details 5) 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 | 9 | 5
Aggregated Outstanding Balance Upon Default | $ | $ 71 | $ 37
Card Member Loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of Accounts | account | 7 | 4
Aggregated Outstanding Balance Upon Default | $ | $ 47 | $ 28
Card Member Receivables |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of Accounts | account | 1 | 1
Aggregated Outstanding Balance Upon Default | $ | $ 19 | $ 9
Other Loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of Accounts | account | 1 |
Aggregated Outstanding Balance Upon Default | $ | $ 5 |

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- Definition Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953682-111524 + Details
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- Definition Amount of financing receivable modified as troubled debt restructuring within previous 12 months, with subsequent payment default. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953682-111524 + Details
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