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v3.3.1.900

Parent Company (Details Textuals) $ in Millions | 12 Months Ended
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Dec. 31, 2014 USD ($)
Parent Company Details (Textuals) [Abstract] |
Gain on business travel joint venture transaction | $ 630

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- Definition Gain on business travel joint venture, before tax + References No definition available. + Details
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Namespace Prefix: | axp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
Name: | axp_ParentCompanyDetailsTextualsAbstract
Namespace Prefix: | axp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration