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Employee Benefits (Tables)
 6 Months Ended
Apr. 30, 2019
Retirement Benefits, Description [Abstract]  
Schedule of Components of Net Periodic Pension Costs
Our results of operations for the three and six months ended April 30, 2019 and 2018, reflect the following components of net periodic pension costs:
Periods Ended April 30,
Three Months
 
Six Months
(In millions)
2019
 
2018
 
2019
 
2018
Service cost
$
2.7

 
$
2.7

 
$
5.4

 
$
5.4

Interest cost
1.3

 
1.3

 
2.5

 
2.5

Expected return on plan assets
(2.3
)
 
(2.3
)
 
(4.6
)
 
(4.6
)
Recognized net actuarial loss
0.4

 
0.4

 
0.8

 
0.8

Net periodic pension cost
$
2.1

 
$
2.1

 
$
4.1

 
$
4.1