Accumulated Other Comprehensive Loss - Schedule of Changes in Accumulated Other Comprehensive Income (Loss) ("AOCI") (Details) - USD ($) $ in Millions	3 Months Ended
	Aug. 31, 2022	Aug. 31, 2021
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	$ 24,939
Translation adjustments	(209)	$ (147)
Ending Balance	25,140	24,321
Foreign Currency Translation Loss [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(1,148)	(785)
Translation adjustments	(209)	(147)
Ending Balance	(1,357)	(932)
Retirement Plans Adjustments [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	45	53
Reclassifications from AOCI	(2)	(2)
Ending Balance	43	51
Accumulated Other Comprehensive (Loss) [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(1,103)	(732)
Ending Balance	$ (1,314)	$ (881)