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Property, Plant and Equipment - Narrative (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Aug. 31, 2013	Aug. 31, 2012	Aug. 31, 2011
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 224.5	$ 199.8	$ 205.2
Assets Held-for-sale, Current	$ 46.9

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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