Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	May 31, 2021	May 31, 2020	May 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 5,727	$ 2,539	$ 4,029
Other comprehensive income (loss), net of tax:
Change in net foreign currency translation adjustment	496	(148)	(173)
Change in net gains (losses) on cash flow hedges	(825)	(130)	503
Change in net gains (losses) on other	5	(9)	(7)
Total other comprehensive income (loss), net of tax	(324)	(287)	323
TOTAL COMPREHENSIVE INCOME	$ 5,403	$ 2,252	$ 4,352