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Document and Entity Information - USD ($)
$ in Billions
 9 Months Ended
Feb. 29, 2016
Mar. 16, 2016
Nov. 30, 2015
Document and Entity Information [Abstract]      
Document Type 10-Q    
Document Period End Date Feb. 29, 2016    
Amendment Flag false    
Document Fiscal Year Focus 2016    
Document Fiscal Period Focus Q3    
Entity Registrant Name FedEx Corporation    
Entity Central Index Key 0001048911    
Current Fiscal Year End Date --05-31    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Large Accelerated Filer    
Entity Public Float     $ 40.6
Entity Common Stock, Shares Outstanding   268,423,762  
TradingSymbol FDX