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Income Taxes (Tables)
 6 Months Ended
Feb. 29, 2012
Income Taxes [Abstract]  
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
A reconciliation of the difference between the federal statutory rate and the Company’s effective rate is as follows:
 
Three Months Ended
 
Six Months Ended
 
2/29/2012
 
2/28/2011
 
2/29/2012
 
2/28/2011
Federal statutory rate
35.0
 %
 
35.0
 %
 
35.0
 %
 
35.0
 %
State taxes, net of credits
(3.7
)
 
1.0

 
(1.5
)
 
1.0

Foreign income taxed at different rates
0.2

 
(2.1
)
 
(0.6
)
 
(1.7
)
Section 199 deduction
(1.2
)
 
(0.6
)
 
(1.4
)
 
(0.9
)
Non-deductible officers’ compensation
0.9

 
0.3

 
0.8

 
0.3

Noncontrolling interests
(2.3
)
 
(0.9
)
 
(2.2
)
 
(1.1
)
Foreign interest income
2.0

 
—

 
1.2

 
—

Other
0.6

 
0.2

 
0.2

 
0.2

Effective tax rate
31.5
 %
 
32.9
 %
 
31.5
 %
 
32.8
 %