Long-Term Borrowings (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended	3 Months Ended		3 Months Ended				3 Months Ended			3 Months Ended			3 Months Ended		3 Months Ended
	Aug. 01, 2012	Dec. 28, 2013	Sep. 28, 2013	Dec. 28, 2013 Amended Credit Agreement Due 2017 [Member]	Dec. 28, 2013 Amended Credit Agreement Due 2017 [Member] LIBOR [Member]	Dec. 28, 2013 Amended Credit Agreement Due 2017 [Member] Federal Funds Rate [Member]	Aug. 01, 2012 364-Day Facility [Member]	Dec. 28, 2013 Revolving Credit Facility [Member]	Sep. 28, 2013 Revolving Credit Facility [Member]	Aug. 01, 2012 Revolving Credit Facility [Member]	Dec. 28, 2013 7.5% Senior Notes due October 1, 2018 [Member]	Sep. 28, 2013 7.5% Senior Notes due October 1, 2018 [Member]	Aug. 01, 2012 7.5% Senior Notes due October 1, 2018 [Member]	Dec. 28, 2013 7.375% Senior Notes due March 15, 2020 [Member]	Sep. 28, 2013 7.375% Senior Notes due March 15, 2020 [Member]	Dec. 28, 2013 7.375% Senior Notes due August 1, 2021 [Member]	Sep. 28, 2013 7.375% Senior Notes due August 1, 2021 [Member]	Aug. 06, 2013 7.375% Senior Notes due August 1, 2021 [Member]	Aug. 02, 2013 7.375% Senior Notes due August 1, 2021 [Member]	Aug. 01, 2012 7.375% Senior Notes due August 1, 2021 [Member]
Debt Instrument [Line Items]
Long-term borrowings		$ 1,243,415	$ 1,245,237					$ 100,000	$ 100,000		$ 523,928	$ 525,171		$ 248,655	$ 248,600	$ 370,832	$ 371,466
Stated interest rate (in hundredths)											7.50%			7.375%		7.375%
Maturity date								Jan. 05, 2017			Oct. 01, 2018			Mar. 15, 2020		Aug. 01, 2021
Ownership interest in Suburban Energy Finance Corp (in hundredths)		100.00%
Net unamortized premium											27,371	28,614				24,652	25,286
Net unamortized discount														1,345	1,400
Date public offering completed											Aug. 01, 2012			Mar. 23, 2010		Aug. 01, 2012
Aggregate principal amount											496,557			250,000		503,443
Fair value of debt at acquisition date (in hundredths)													106.875%							108.125%
Debt instrument repurchase amount																		23,863	133,400
Percentage of principal amount at which debt was issued (in hundredths)														99.136%
Percentage of the principal amount repurchase offer under change of control provision (in hundredths)											101.00%			101.00%		101.00%
Number of days after the consummation of the change of control that a rating decline may occur to trigger offer to repurchase debt											90 days			90 days		90 days
Revolving credit facility, term								5 years
Credit Facility, maximum amount							250,000		400,000	400,000
Standby letters of credit issued under the Revolving Credit Facility								46,742
Available borrowing capacity under Revolving Credit Facility								253,258
Revolving Credit Facility and Senior Notes covenants [Abstract]
Consolidated interest coverage ratio, minimum	2.0 to 1.0	2.25 to 1.0
Total consolidated leverage ratio, maximum		7.0 to 1.0
Consolidated interest coverage ratio commencing with second quarter of fiscal 2014, minimum		2.5 to 1.0
Consolidated fixed charge coverage ratio, minimum		1.75 to 1
Consolidated leverage ratio commencing with second quarter of fiscal 2013, minimum		4.75 to 1.0
Consolidated leverage ratio commencing with second quarter of fiscal 2013, during acquisition period, minimum		5.0 to 1.0
Description of variable rate basis					LIBOR	Federal Funds Rate
Margin over basis rate (in hundredths)		1.00%			1.00%	0.50%
Weighted average interest rate (in hundredths)				2.50%
Interest rate swap agreement [Abstract]
Effective date				Jun. 25, 2013
Termination date				Jan. 05, 2017
Fixed interest rate (in hundredths)				1.63%
Long-term debt maturities [Abstract]
Long-term debt maturities, 2014		0
Long-term debt maturities, 2015		0
Long-term debt maturities, 2016		0
Long-term debt maturities, 2017		100,000
Long-term debt maturities, 2018		496,557
Long-term debt maturities, 2019 and thereafter		$ 596,180