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Employee Benefits (Tables)
 9 Months Ended
Jul. 31, 2016
General Discussion of Pension and Other Postretirement Benefits [Abstract]  
Schedule of Components of Net Periodic Pension Costs
Our results of operations for the three and nine months ended July 31, 2016 and 2015 reflect the following components of net periodic pension costs:
Periods Ended July 31,
Three Months
 
Nine Months
(In millions)
2016
 
2015
 
2016
 
2015
Service cost
$
2.3

 
$
2.0

 
$
6.9

 
$
6.1

Interest cost
1.2

 
1.1

 
3.7

 
3.2

Expected return on plan assets
(1.6
)
 
(1.5
)
 
(4.9
)
 
(4.5
)
Recognized net actuarial loss
0.4

 
0.2

 
1.2

 
0.7

Net periodic pension cost
$
2.3

 
$
1.8

 
$
6.9

 
$
5.5