CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	May 31, 2021	May 31, 2020	May 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 13,746	$ 10,135	$ 11,083
Other comprehensive income (loss), net of tax:
Net foreign currency translation gains (losses)	479	(78)	(149)
Net unrealized gains (losses) on defined benefit plans	71	(79)	(70)
Net unrealized (losses) gains on marketable securities	(1)	91	332
Net unrealized losses on cash flow hedges	(8)	(22)	(52)
Total other comprehensive income (loss), net	541	(88)	61
Comprehensive income	$ 14,287	$ 10,047	$ 11,144