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Unit-Based Compensation Arrangements (Tables)
9 Months Ended
Jun. 25, 2011
Unit-Based Compensation Arrangements [Abstract]  
Summary of activity for the Restricted Unit Plans
The following is a summary of activity for the Restricted Unit Plans for the nine months ended June 25, 2011:

      
Weighted
 
      
Average Grant
 
      
Date Fair Value
 
   
Units
  
Per Unit
 
Outstanding September 25, 2010
  481,267  $29.67 
Awarded
  116,033   41.10 
Forfeited
  (21,839)  (34.56)
Issued
  (105,432)  (27.52)
Outstanding June 25, 2011
  470,029  $32.74