Derivative Instruments And Hedging Activities (Schedule Of Gain (Loss) Recognized In Earnings For Economic (Non-Designated) Derivative Financial Instruments) (Details) (Derivatives Not Designated As Hedging Instruments [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Nov. 30, 2011	Nov. 30, 2010	Nov. 30, 2011	Nov. 30, 2010
Derivative [Line Items]
Income (Loss) Recognized in Earnings	$ 3,516	$ (1,917)	$ 2,665	$ (3,889)
Commodity Contracts [Member] | Cost Of Goods Sold [Member]
Derivative [Line Items]
Income (Loss) Recognized in Earnings	(226)	(840)	(1,103)	(1,554)
Foreign Exchange Contracts [Member] | Miscellaneous Expense [Member]
Derivative [Line Items]
Income (Loss) Recognized in Earnings	$ 3,742	$ (1,077)	$ 3,768	$ (2,335)