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Partnership Organization and Formation (Details)
12 Months Ended
Sep. 24, 2011
Sep. 25, 2010
Common Units outstanding (in units)35,428,85535,318,000
Owned subsidiary of the Partnership (in hundredths)100.00% 
Number of residential, commercial, industrial and agricultural customers750,000 
Number of locations served by the partnership300 
Number of states in which the partnership operates30 
Minimum disclosure threshold percentage of revenues by customer (in hundredths)10.00% 
General Partner [Member] | Common Unitholders [Member]
  
Common Units outstanding (in units)784