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PENSION AND POSTRETIREMENT BENEFITS (Tables)
3 Months Ended
Aug. 26, 2012
Components of Pension Benefit and Other Postretirement Benefit Costs

Components of pension benefit and other postretirement benefit costs included:

 

     Pension Benefits
Thirteen weeks ended
    Postretirement Benefits
Thirteen weeks ended
 
     August 26,
2012
    August 28,
2011
    August 26,
2012
    August 28,
2011
 

Service cost

   $ 20.2      $ 17.1      $ 0.1      $ 0.2   

Interest cost

     36.6        37.2        2.5        3.7   

Expected return on plan assets

     (52.3     (48.9     —          —     

Amortization of prior service cost (gain)

     0.8        0.8        (2.1     (2.2

Recognized net actuarial loss

     —          —          1.5        1.5   

Curtailment loss

     0.8        —          —          —     
  

 

 

   

 

 

   

 

 

   

 

 

 

Benefit cost — Company plans

     6.1        6.2        2.0        3.2   

Pension benefit cost — multi-employer plans

     2.1        2.1        —          —     
  

 

 

   

 

 

   

 

 

   

 

 

 

Total benefit cost

   $ 8.2      $ 8.3      $ 2.0      $ 3.2