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v3.10.0.1

Related Party Transactions (Details) | 12 Months Ended
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May 31, 2018
Related Party Transactions [Abstract] |
Related Party Ownership Interest | 10.00%

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- Definition Represents the Chairman, President and Chief Executive Officer's ownership interest in the National Football League Washington Redskins professional football team. + References No definition available. + Details
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Namespace Prefix: | fdx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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