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Post Retirement Benefit Plans (Tables)
 3 Months Ended
Jan. 31, 2015
Postemployment Benefits [Abstract]  
Components of Net Periodic Pension Cost

The components of net periodic pension cost include the following (Dollars in millions):

 

     Three months ended  
     January 31,  
     2015      2014  

Service cost

    $ 4.1       $ 3.9   

Interest cost

      7.1         7.4   

Expected return on plan assets

      (8.4 )       (8.5 ) 

Amortization of prior service cost, initial net asset and net actuarial gain

      3.7         2.7   
  

 

 

     

 

 

  

Net periodic pension costs

 $ 6.5    $ 5.5   
  

 

 

     

 

 
Components of Net Periodic Cost for Postretirement Benefits

The components of net periodic cost for postretirement benefits include the following (Dollars in millions):

 

     Three months ended  
     January 31,  
     2015      2014  

Service cost

    $ —         $ —     

Interest cost

      0.2         0.2   

Amortization of prior service cost and recognized actuarial gain

      (0.4 )       (0.4 ) 
  

 

 

     

 

 

  

Net periodic benefit for postretirement benefits

 $ (0.2 )  $ (0.2 )