Identifiable Intangible Assets and Goodwill - Identifiable Intangible Asset Balances (Detail) (USD $) In Millions, unless otherwise specified	Nov. 30, 2013	May 31, 2013
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Amount	$ 192	$ 182
Accumulated Amortization	(90)	(83)
Net Carrying Amount	102	99
Unamortized intangible assets — Trademarks	283	283
Identifiable intangible assets, net	385	382
Patents
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Amount	128	119
Accumulated Amortization	(38)	(35)
Net Carrying Amount	90	84
Trademarks
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Amount	45	43
Accumulated Amortization	(36)	(32)
Net Carrying Amount	9	11
Other
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Amount	19	20
Accumulated Amortization	(16)	(16)
Net Carrying Amount	$ 3	$ 4