Accumulated Other Comprehensive Income Net of Tax (Detail) (USD $) In Millions, unless otherwise specified	May 31, 2013	May 31, 2012
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Cumulative translation adjustment and other	$ (14)	$ (127)
Net deferred gain on cash flow hedge derivatives	193	181
Net deferred gain on net investment hedge derivatives	95	95
ACCUMULATED OTHER COMPREHENSIVE INCOME	$ 274	$ 149