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Changes in Accumulated Other Comprehensive (Loss) Income (Details Textuals) $ in Millions | 6 Months Ended
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Jun. 30, 2017 USD ($)
Accumulated Other Comprehensive Income (Loss) (Textuals) [Abstract] |
Tax Benefits Recognized | $ 289

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- Definition Amount of Tax Benefits recognized in the period + References No definition available. + Details
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Namespace Prefix: | axp_
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