Summary Of Significant Accounting Policies Summary Of Significant Accounting Policies (Asset Useful Life) (Details)	12 Months Ended
	Aug. 31, 2012
Building [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Useful Lives	7 years
Building [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Useful Lives	40 years
Land Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Useful Lives	3 years
Land Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Useful Lives	25 years
Leasehold Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Useful Lives	3 years
Leasehold Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Useful Lives	15 years
Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Useful Lives	3 years
Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Useful Lives	25 years