No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Represents other, net expenses from miscellaneous items within other revenues not previously classified.

No definition available.

Name:	axp_OtherNetExpenses
Namespace Prefix:	axp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Service Fees and Other Revenue and Other Expenses

No definition available.

Name:	axp_ServiceFeesAndOtherRevenueAndOtherExpensesAbstract
Namespace Prefix:	axp_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
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Period Type:	duration

Amount of noninterest expense classified as other.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
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Period Type:	duration

A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 946
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-Topic 220
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-Name Accounting Standards Codification
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-Publisher FASB
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 48
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-48

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section 45
-Paragraph 3
-Subparagraph (k)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479105/946-220-45-3

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-Topic 946
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