Loans and Card Member Receivables (Details 5) account in Thousands, $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2022 USD ($) account	Jun. 30, 2021 USD ($) account	Jun. 30, 2022 USD ($) account	Jun. 30, 2021 USD ($) account
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Accounts \| account	5	13	10	22
Aggregated Outstanding Balance Upon Default \| $	$ 33	$ 91	$ 72	$ 162
Card Member Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Accounts \| account	4	9	8	16
Aggregated Outstanding Balance Upon Default \| $	$ 23	$ 69	$ 52	$ 116
Card Member Receivables
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Accounts \| account	1	3	2	4
Aggregated Outstanding Balance Upon Default \| $	$ 10	$ 19	$ 20	$ 38
Other Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Accounts \| account	0	1	0	2
Aggregated Outstanding Balance Upon Default \| $	$ 0	$ 3	$ 0	$ 8

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.

No definition available.

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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 https://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524

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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 https://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524

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