Loans and Card Member Receivables (Details 5) account in Thousands, $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2020 USD ($) account	Jun. 30, 2019 USD ($) account	Jun. 30, 2020 USD ($) account	Jun. 30, 2019 USD ($) account
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Accounts \| account	143	19	170	38
Outstanding Balances \| $	$ 2,001	$ 187	$ 2,270	$ 355
Card Member Loans [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Accounts \| account	116	17	140	34
Outstanding Balances \| $	$ 1,103	$ 137	$ 1,298	$ 265
Average Interest Rate Reduction (as a percentage)	14.00%	13.00%	14.00%	13.00%
Card Member Receivables [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Accounts \| account	22	2	25	4
Outstanding Balances \| $	$ 744	$ 50	$ 818	$ 90
Average Payment Term Extension (in months)	18 months	26 months	19 months	27 months
Other Loans [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Accounts \| account	5		5
Outstanding Balances \| $	$ 154		$ 154
Average Interest Rate Reduction (as a percentage)	4.00%		4.00%
Average Payment Term Extension (in months)	15 months		15 months

The average basis point reduction in interest rate by class of Financial Instrument

No definition available.

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- Definition

The average period for payment term extension for cardmember receivables modified in a TDR.

+ 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

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, after troubled debt restructuring, of modified financing receivable.

+ References

+ Details

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- Details

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- Details

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- Details

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