Partnership Organization and Formation (Details)	Sep. 27, 2014 State Customer Location	Sep. 28, 2013
Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Effects Of Changes Net [Line Items]
Common Units outstanding (in units)	60,316,746	60,231,000
Percentage of wholly-owned subsidiary (in hundredths)	100.00%
Number of residential, commercial, industrial and agricultural customers	1,200,000
Number of locations served by the partnership	710
Number of states in which the partnership operates	41
Minimum disclosure threshold percentage of revenues by customer (in hundredths)	10.00%
General Partner [Member] | Common Unitholders [Member]
Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Effects Of Changes Net [Line Items]
Common Units outstanding (in units)	784