Goodwill and Other Intangible Assets - Additional Information (Details) - USD ($)	3 Months Ended		12 Months Ended
	May 31, 2024	May 31, 2023	May 31, 2024	May 31, 2023	May 31, 2022
Good Will and Intangible Assets [Line Items]
Goodwill impairment charges				$ 36,000,000
Asset impairment charges	$ 0		$ 157,000,000	117,000,000
Intangible assets amortization expense			$ 47,000,000	52,000,000	$ 52,000,000
FedEx Dataworks, Inc. [Member]
Good Will and Intangible Assets [Line Items]
Goodwill impairment charges		$ 36,000,000
Asset impairment charges				$ 47,000,000
Shoprunner Acquisition [Member]
Good Will and Intangible Assets [Line Items]
Asset impairment charges		$ 11,000,000