Document and Entity Information - shares	3 Months Ended
	Aug. 31, 2017	Sep. 18, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Document Period End Date	Aug. 31, 2017
Amendment Flag	false
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
Entity Registrant Name	FedEx Corporation
Entity Central Index Key	0001048911
Current Fiscal Year End Date	--05-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		268,147,668
Trading Symbol	FDX