Identifiable Intangible Assets and Goodwill - Identifiable Intangible Asset Balances (Detail) (USD $) In Millions, unless otherwise specified	May 31, 2013	May 31, 2012
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Amount	$ 182	$ 158
Accumulated Amortization	(83)	(71)
Net Carrying Amount	99	87
Unamortized intangible assets - Trademarks	283	283
Identifiable intangible assets, net	382	370
Patents
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Amount	119	99
Accumulated Amortization	(35)	(29)
Net Carrying Amount	84	70
Trademarks
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Amount	43	40
Accumulated Amortization	(32)	(26)
Net Carrying Amount	11	14
Other
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Amount	20	19
Accumulated Amortization	(16)	(16)
Net Carrying Amount	$ 4	$ 3