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Pension and Profit Sharing Plans (Tables)
 3 Months Ended
Nov. 30, 2013
Compensation and Retirement Disclosure [Abstract]  
Schedule of Net Periodic Pension Cost
Net periodic pension cost for the Company’s defined benefit pension plans during the three months ended November 30, 2013 and 2012 included the following components before tax:
 
Three Months Ended
 
November 30, 2013
 
November 30, 2012
Service cost
$
0.6

 
$
0.9

Interest cost
2.2

 
2.0

Expected return on plan assets
(2.5
)
 
(2.2
)
Amortization of prior service cost
0.2

 
0.2

Recognized actuarial loss
0.8

 
1.6

Net periodic pension cost
$
1.3

 
$
2.5