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Reserves For Losses (Details Textuals) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Card Member receivables reserves for losses - other |  | $ 3 | $ (3)
Card Member loans reserves for losses - other |  | 26 | 70
Allowance for Card Member Receivables and Reserves, Recoveries of Bad Debts |  | 271 | 301
Allowance for Card Member Loans, Recoveries of Bad Debts |  | 307 | 280
Allowance for Card Member Receivables, Recoveries of Bad Debts - TDR |  | 2 | 16
Allowance for Card Member Loans, Recoveries of Bad Debts - TDR |  | 25 | 24
Foreign Currency Translation Adjustments [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Card Member receivables reserves for losses - other |  | 18 | 0
Card Member loans reserves for losses - other |  | 14 | (3)
Other Items [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Card Member receivables reserves for losses - other |  | (15) | (3)
Card Member loans reserves for losses - other |  | $ 12 | 6
CardMember loans transferred from HFS to held for investment | $ 0 |  | 265
CardMember reserves associated with loans held for investments | $ 0 |  | $ 67

X
- Definition Amount of recovery of Card Member loans related to troubled debt restructurings, which had previously been fully or partially written-off as bad debts. + References No definition available. + Details
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X
- Definition Amount of recovery of Card Member receivables related to troubled debt restructurings, which had previously been fully or partially written-off as bad debts. + References No definition available. + Details
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- Definition Amount of CardMember reserves associated with CardMember loans held for investments + References No definition available. + Details
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- Definition CardMember loans transferred from Held for Sales (HFS) to held for investment + References No definition available. + Details
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X
- Definition Represents adjustments to cardmember loans reserve including foreign currency translation adjustments and net write-offs related to unauthorized transactions for the period. + References No definition available. + Details
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X
- Definition Represents adjustments to cardmember receivables resulting from unauthorized transactions and foreign currency translation adjustments for the period. + References No definition available. + Details
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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 Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 + Details
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- Definition Amount of increase in the allowances and reserves, which consist of the valuation and qualifying accounts that are either netted against the cost of an asset or that reflect a liability established to represent expected future costs, from recoveries of amounts previously written off or reestablishment of reserves that had previously been utilized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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