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Business Segments and Foreign Operations (Details Textual) (Americas [Member], USD $) In Millions, unless otherwise specified	Aug. 31, 2012	Aug. 31, 2011	Aug. 31, 2010
Americas [Member]
Business Segments and Foreign Operations (Textual) [Abstract]
Corporate expenses	$ 19.7	$ 19.3	$ 17.5

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Corporate expenses.

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