Derivatives And Risk Management (Hedged Items Designated As Fair Value Hedging Instruments) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Nov. 30, 2012	Nov. 30, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) before taxes for hedged items of fair value hedges	$ 134	$ (3,784)
Net sales [Member] | Foreign exchange [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) before taxes for hedged items of fair value hedges	(23)	0
Cost of goods sold [Member] | Foreign exchange [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) before taxes for hedged items of fair value hedges	157	0
SG&A expenses [Member] | Foreign exchange [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) before taxes for hedged items of fair value hedges	0	(2,579)
Interest expense [Member] | Interest rate [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) before taxes for hedged items of fair value hedges	$ 0	$ (1,205)