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Retirement Plans and Postretirement Health Care and Life Insurance Benefits (Tables)
6 Months Ended
Apr. 30, 2013
Compensation And Retirement Disclosure [Abstract]  
Components of Net Periodic Pension Cost

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

 

     Three months ended     Six months ended  
     April 30,     April 30,  
     2013     2012     2013     2012  

Service cost

   $ 4.2      $ 3.4      $ 8.4      $ 6.8   

Interest cost

     6.9        7.4        13.8        14.8   

Expected return on plan assets

     (8.1     (8.5     (16.2     (17.0

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

     4.2        3.2        8.4        6.4   
  

 

 

   

 

 

   

 

 

   

 

 

 

Net periodic pension costs

   $ 7.2      $ 5.5      $ 14.4      $ 11.0   
  

 

 

   

 

 

   

 

 

   

 

 

 
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     Six months ended  
     April 30,     April 30,  
     2013     2012     2013     2012  

Service cost

   $ —        $ —        $ —        $ —     

Interest cost

     0.2        0.3        0.4        0.6   

Amortization of prior service cost and recognized actuarial gain

     (0.4     (0.4     (0.8     (0.8
  

 

 

   

 

 

   

 

 

   

 

 

 

Net periodic cost for postretirement benefits

   $ (0.2   $ (0.1   $ (0.4   $ (0.2