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Contingencies - Additional Information (Details) $ in Millions | Nov. 30, 2024 USD ($)
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Loss Contingency [Abstract] |
Environmental matters threshold | $ 1

X
- Definition Environmental matters threshold contingencies. + References No definition available. + Details
Name: | fdx_EnvironmentalMattersThresholdContingencies
Namespace Prefix: | fdx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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