Acquisition of Inergy Propane (Details) (Inergy Propane [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	0 Months Ended	3 Months Ended					9 Months Ended
	Aug. 01, 2012	Jun. 29, 2013	Mar. 30, 2013	Dec. 29, 2012	Sep. 29, 2012	Jun. 23, 2012	Jun. 29, 2013	Jun. 23, 2012
Inergy Propane [Member]
Assets acquired [Abstract]
Cash and cash equivalents	$ 7,964
Accounts receivable	36,076
Inventories	30,457
Other current assets	2,067
Current assets acquired	76,564
Property, plant & equipment	617,854
Customer relationships	445,500
Non-compete agreements	23,059
Other intangible assets	1,983
Goodwill	809,778
Other assets	2,151
Total assets acquired	1,976,889
Liabilities assumed [Abstract]
Accounts payable	16
Accrued employment and benefit costs	2,149
Customer deposits and advances	48,469
Other current liabilities	18,613
Other noncurrent liabilities	16,727
Total liabilities assumed	85,974
Total	1,890,915
Estimated property, plant and equipment decreased	(33,302)
Estimated intangible assets (principally customer relationships) increased	39,583
Estimated other current assets decreased	(765)
Estimated other noncurrent liabilities decreased	(646)
Net effect of adjustments	(4,870)
Depreciation, Depletion and Amortization [Abstract]
Depreciation expense			(340)	(305)	(205)
Amortization expense			2,008	2,473	1,449
Total depreciation & amortization expense			1,668	2,168	1,244
Unaudited pro forma combined financial information [Abstract]
Revenues		290,805				307,679	1,459,934	1,582,831
Net (loss) income		$ (45,188)				$ (37,312)	$ 141,917	$ 66,615
(Loss) income per Common Unit
Basic (in dollars per unit)		$ (0.77)				$ (0.66)	$ 2.46	$ 1.19
Diluted (in dollars per unit)		$ (0.77)				$ (0.66)	$ 2.45	$ 1.18