Segment Information - Disclosure by Reportable Segment and Reconciliation of Total Operating Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 27, 2015	Jun. 28, 2014	Jun. 27, 2015	Jun. 28, 2014	Sep. 27, 2014
Revenues [Abstract]
Total revenues	$ 220,302	$ 297,143	$ 1,242,635	$ 1,696,971
Operating (loss) income [Abstract]
Total operating (loss) income	(21,834)	(26,575)	225,725	224,524
Reconciliation to net (loss) income:
Loss on debt extinguishment		11,589	15,072	11,589
Interest expense, net	18,933	20,662	58,643	63,095
Provision for income taxes	185	163	521	611
Net (loss) income	(40,952)	(58,989)	151,489	149,229
Depreciation and amortization [Abstract]
Total depreciation and amortization	32,730	32,992	98,588	101,101
Assets [Abstract]
Total assets	2,540,312		2,540,312		$ 2,609,363
Operating/Reportable Segments [Member] | Propane [Member]
Revenues [Abstract]
Total revenues	181,259	242,173	1,034,525	1,409,271
Operating (loss) income [Abstract]
Total operating (loss) income	7,352	4,457	299,693	300,356
Depreciation and amortization [Abstract]
Total depreciation and amortization	27,118	26,067	81,759	78,608
Assets [Abstract]
Total assets	2,256,645		2,256,645		2,365,320
Operating/Reportable Segments [Member] | Fuel Oil and Refined Fuels [Member]
Revenues [Abstract]
Total revenues	17,043	26,898	116,399	174,888
Operating (loss) income [Abstract]
Total operating (loss) income	(662)	(3,160)	10,218	6,590
Depreciation and amortization [Abstract]
Total depreciation and amortization	896	1,240	2,457	4,435
Assets [Abstract]
Total assets	62,562		62,562		69,360
Operating/Reportable Segments [Member] | Natural Gas and Electricity [Member]
Revenues [Abstract]
Total revenues	11,861	16,912	56,109	74,311
Operating (loss) income [Abstract]
Total operating (loss) income	2,349	1,492	12,564	9,166
Depreciation and amortization [Abstract]
Total depreciation and amortization	2	2	6	44
Assets [Abstract]
Total assets	12,831		12,831		13,992
Operating/Reportable Segments [Member] | All Other [Member]
Revenues [Abstract]
Total revenues	10,139	11,160	35,602	38,501
Operating (loss) income [Abstract]
Total operating (loss) income	(7,352)	(6,724)	(18,319)	(19,112)
Depreciation and amortization [Abstract]
Total depreciation and amortization	70	187	219	584
Assets [Abstract]
Total assets	3,357		3,357		3,342
Operating/Reportable Segments [Member] | Corporate [Member]
Operating (loss) income [Abstract]
Total operating (loss) income	(23,521)	(22,640)	(78,431)	(72,476)
Depreciation and amortization [Abstract]
Total depreciation and amortization	4,644	$ 5,496	14,147	$ 17,430
Assets [Abstract]
Total assets	$ 204,917		$ 204,917		$ 157,349