Loans and Card Member Receivables (Details 5) account in Thousands, $ in Millions	12 Months Ended
Dec. 31, 2022 USD ($) account	Dec. 31, 2021 USD ($) account	Dec. 31, 2020 USD ($) account
Financing Receivable, Modifications [Line Items]
Number of Accounts \| account	180	137	328
Account Balances \| $	$ 1,910	$ 1,239	$ 3,894
Card Member loans
Financing Receivable, Modifications [Line Items]
Number of Accounts \| account	149	112	272
Account Balances \| $	$ 1,002	$ 789	$ 2,347
Average Interest Rate Reduction (as a percent)	14.00%	13.00%	14.00%
Card Member receivables
Financing Receivable, Modifications [Line Items]
Number of Accounts \| account	27	21	47
Account Balances \| $	$ 900	$ 437	$ 1,202
Average Payment Term Extension (in months)	20 months	18 months	19 months
Other
Financing Receivable, Modifications [Line Items]
Number of Accounts \| account	4	4	9
Account Balances \| $	$ 8	$ 13	$ 345
Average Interest Rate Reduction (as a percent)	2.00%	3.00%	3.00%
Average Payment Term Extension (in months)	17 months	16 months	16 months

Average Interest Rate Reduction By Class Of Financial Instrument

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- Definition

The average period for payment term extension for Card Member 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 https://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

+ Details

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- Definition

Amount, before troubled debt restructuring, of financing receivable to be modified.

+ References

+ Details

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- Details

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