CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2021	Feb. 29, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 5,021	$ 2,571	$ 9,714	$ 7,019
Other comprehensive income (loss), net of tax:
Net foreign currency translation gains (losses)	132	(86)	504	(178)
Net unrealized gains on defined benefit plans	10	34	66	45
Net unrealized (losses) gains on marketable securities	(4)	3	(1)	91
Net unrealized (losses) gains on cash flow hedges	(7)	7	(8)	(9)
Total other comprehensive income (loss), net	131	(42)	561	(51)
Comprehensive income	$ 5,152	$ 2,529	$ 10,275	$ 6,968