Consolidated Statements of Comprehensive Income - USD ($) $ in Millions		12 Months Ended
		May 31, 2016	May 31, 2015	May 31, 2014
Statement of Comprehensive Income [Abstract]
Net income		$ 3,760	$ 3,273	$ 2,693
Other comprehensive income (loss), net of tax:
Change in net foreign currency translation adjustment	[1]	(176)	(20)	(32)
Change in net gains (losses) on cash flow hedges	[2]	(757)	1,188	(161)
Change in net gains (losses) on other	[3]	5	(7)	4
Total other comprehensive income (loss), net of tax		(928)	1,161	(189)
TOTAL COMPREHENSIVE INCOME		$ 2,832	$ 4,434	$ 2,504

[1] Net of tax benefit (expense) of $0 million, $0 million and $0 million, respectively.

[2] Net of tax benefit (expense) of $35 million, $(31) million and $18 million, respectively.

[3] Net of tax benefit (expense) of $0 million, $0 million and $0 million, respectively.