Loans and Card Member Receivables - Modified as TDR, Prior to Adoption (Details) account in Thousands, $ in Millions	12 Months Ended
Dec. 31, 2022 USD ($) account
Financing Receivable, Modifications [Line Items]
Number of Accounts \| account	180
Account Balances \| $	$ 1,910
Card Member loans
Financing Receivable, Modifications [Line Items]
Number of Accounts \| account	149
Account Balances \| $	$ 1,002
Average Interest Rate Reduction (as a percent)	14.00%
Card Member receivables
Financing Receivable, Modifications [Line Items]
Number of Accounts \| account	27
Account Balances \| $	$ 900
Average Payment Term Extension (in months)	20 months
Other Loans
Financing Receivable, Modifications [Line Items]
Number of Accounts \| account	4
Account Balances \| $	$ 8
Average Interest Rate Reduction (as a percent)	2.00%
Average Payment Term Extension (in months)	17 months

Average Interest Rate Reduction By Class Of Financial Instrument

No definition available.

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Balance Type:	na
Period Type:	duration

- 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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Namespace Prefix:	axp_
Data Type:	xbrli:durationItemType
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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

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
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Period Type:	duration

- Definition

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

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Details

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- Details

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- Details

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