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Employee Benefits (Tables)
 9 Months Ended
Jul. 31, 2018
Retirement Benefits, Description [Abstract]  
Schedule of Components of Net Periodic Pension Costs
Our results of operations for the three and nine months ended July 31, 2018 and 2017, reflect the following components of net periodic pension costs:
Periods Ended July 31,
Three Months
 
Nine Months
(In millions)
2018
 
2017
 
2018
 
2017
Service cost
$
2.7

 
$
2.5

 
$
8.1

 
$
7.5

Interest cost
1.3

 
1.1

 
3.8

 
3.3

Expected return on plan assets
(2.3
)
 
(1.8
)
 
(6.9
)
 
(5.4
)
Recognized net actuarial loss
0.4

 
0.7

 
1.2

 
2.1

Net periodic pension cost
$
2.1

 
$
2.5

 
$
6.2

 
$
7.5