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Employee Benefit Plans
 3 Months Ended
Mar. 31, 2012
Employee Benefit Plans [Abstract]  
Employee Benefit Plans

Note 10—Employee benefit plans:

Defined benefit plans—The components of our net periodic defined benefit pension cost are presented in the table below.

 

     Three months ended
March  31,		  
     2011     2012  
     (In millions)  

Service cost

    $ 2.7      $ 2.6   

Interest cost

      6.6        6.4   

Expected return on plan assets

      (5.6 )      (5.5 ) 

Amortization of unrecognized:

     

Prior service cost

      .4        .4   

Net transition obligations

      .1        .1   

Recognized actuarial losses

      1.8        2.3   
  

 

 

    

 

 

  

Total

    $ 6.0      $ 6.3   
  

 

 

    

 

 

  

Other postretirement benefits—The components of our net periodic other postretirement benefit cost are presented in the table below.

 

     Three months ended
March 31,		  
     2011     2012  
     (In millions)  

Service cost

    $ .1      $ .1   

Interest cost

      .2        .2   

Amortization of prior service credit

      (.6 )      (.5 ) 

Recognized actuarial losses

      .1        —     
  

 

 

    

 

 

  

Total

    $ (.2 )    $ (.2 ) 
  

 

 

    

 

 

  

Contributions—We expect to contribute the equivalent of $29.1 million and $1.7 million, respectively, to all of our defined benefit pension plans and other postretirement benefit plans during 2012.