Goodwill and Other Intangible Assets - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	May 31, 2023	May 31, 2023	May 31, 2022	May 31, 2021
Good Will and Intangible Assets [Line Items]
Goodwill impairment charges		$ 36
Asset impairment charges		117
Intangible assets amortization expense		52	$ 52	$ 49
FedEx Dataworks, Inc. [Member]
Good Will and Intangible Assets [Line Items]
Goodwill impairment charges	$ 36
Asset impairment charges		$ 47
Shoprunner Acquisition [Member]
Good Will and Intangible Assets [Line Items]
Asset impairment charges	$ 11