Note 2 - Acquisition (Detail) (USD $)	Feb. 28, 2013	May 31, 2012	Aug. 19, 2011
Business Acquisition, Cost of Acquired Entity, Transaction Costs		$ 2,000,000	$ 88,259,000
Business Acquisition, Cost of Acquired Entity, Purchase Price			1,939,387,000
Business Acquisition, Purchase Price Allocation, Goodwill Amount			972,295,000
Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets			779,860,000
Deferred Tax Liabilities, Other (in Dollars)	700,000		291,900,000
Capitalized [Member]
Business Acquisition, Cost of Acquired Entity, Transaction Costs			42,500,000
Expensed [Member]
Business Acquisition, Cost of Acquired Entity, Transaction Costs			16,900,000
Paid from Equity Proceeds [Member]
Business Acquisition, Cost of Acquired Entity, Transaction Costs			$ 28,900,000