CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	3 Months Ended
	Aug. 31, 2012	Aug. 31, 2011
Condensed Consolidated Statements of Comprehensive Income
Net income	$ 2,034	$ 1,840
Other comprehensive income, net of tax:
Net foreign currency translation gains	67	52
Net unrealized gains on defined benefit plans	5	1
Net unrealized gains (losses) on marketable securities	127	(3)
Total other comprehensive income, net	199	50
Comprehensive income	$ 2,233	$ 1,890