CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2016	Nov. 30, 2015
Net income	$ 2,032	$ 2,197	$ 3,864	$ 3,945
Portion Attributable to Parent [Member]
Net income	2,032	2,197	3,864	3,945
Other comprehensive loss, net of tax:
Net foreign currency translation losses	(204)	(132)	(71)	(133)
Net unrealized gains on defined benefit plans	2	7	7	20
Net unrealized (losses) gains on marketable securities	(356)	10	(213)	(116)
Net unrealized gains (losses) on cash flow hedges	19	15	21	(14)
Total other comprehensive loss, net	(539)	(100)	(256)	(243)
Comprehensive income	$ 1,493	$ 2,097	$ 3,608	$ 3,702