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Income Taxes (Reconciliation Of Effective Tax Rate) (Details)	12 Months Ended
	Aug. 31, 2012	Aug. 31, 2011	Aug. 31, 2010
Income Taxes [Abstract]
Effective tax rate per consolidated income statement	37.70%	32.30%	25.80%
Book income attributable to noncontrolling interests			3.90%
Effective tax rate for the fiscal year	37.70%	32.30%	29.70%

- Definition

A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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