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Employee Benefit Plans (Tables)
 6 Months Ended
Jan. 31, 2017
General Discussion of Pension and Other Postretirement Benefits [Abstract]  
Components Of Net Periodic Pension Costs
Net periodic benefit costs for the Company’s pension plans include the following components (in millions):
 
Three Months Ended
January 31,
 
Six Months Ended
January 31,
 
2017
 
2016
 
2017
 
2016
Net periodic benefit cost:
 

 
 

 
 

 
 

Service cost
$
2.0

 
$
4.5

 
$
4.1

 
$
9.1

Interest cost
3.4

 
4.8

 
6.7

 
9.5

Expected return on assets
(6.6
)
 
(7.2
)
 
(13.2
)
 
(14.5
)
Prior service cost amortization
0.2

 
0.1

 
0.4

 
0.3

Actuarial loss amortization
1.8

 
2.1

 
3.6

 
4.3

Net periodic benefit cost
$
0.8

 
$
4.3

 
$
1.6

 
$
8.7