Identifiable Intangible Asset Balances (Detail) (USD $) In Millions, unless otherwise specified	Nov. 30, 2011	May 31, 2011
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Amount	$ 228	$ 171
Accumulated Amortization	(82)	(71)
Net Carrying Amount	146	100
Unamortized intangible assets- Trademarks	386	387
Identifiable intangible assets, net	532	487
Patents
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Amount	88	80
Accumulated Amortization	(27)	(24)
Net Carrying Amount	61	56
Trademarks
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Amount	46	44
Accumulated Amortization	(29)	(25)
Net Carrying Amount	17	19
Other
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Amount	94	47
Accumulated Amortization	(26)	(22)
Net Carrying Amount	$ 68	$ 25