Identifiable Intangible Asset Balances (Detail) (USD $) In Millions, unless otherwise specified	Aug. 31, 2012	May 31, 2012
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Amount	$ 239	$ 234
Accumulated Amortization	(90)	(85)
Net Carrying Amount	149	149
Unamortized intangible assets - Trademarks	387	386
IDENTIFIABLE INTANGIBLE ASSETS, NET	536	535
Patents
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Amount	103	99
Accumulated Amortization	(31)	(29)
Net Carrying Amount	72	70
Trademarks
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Amount	42	41
Accumulated Amortization	(28)	(26)
Net Carrying Amount	14	15
Other
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Amount	94	94
Accumulated Amortization	(31)	(30)
Net Carrying Amount	$ 63	$ 64