Unaudited Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Aug. 31, 2019	Aug. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 1,367	$ 1,092
Other comprehensive income (loss), net of tax:
Change in net foreign currency translation adjustment	(89)	(128)
Change in net gains (losses) on cash flow hedges	36	193
Change in net gains (losses) on other	2	(3)
Total other comprehensive income (loss), net of tax	(51)	62
TOTAL COMPREHENSIVE INCOME	$ 1,316	$ 1,154