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Long-Term Borrowings (Details) (USD $)
In Thousands, unless otherwise specified
 0 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 0 Months Ended 12 Months Ended
Aug. 01, 2012
Dec. 29, 2013
Mar. 30, 2014
Sep. 28, 2013
Sep. 29, 2012
Sep. 24, 2011
Sep. 29, 2012
Amended Credit Agreement [Member]
Sep. 28, 2013
Amended Credit Agreement Due 2017 [Member]
Sep. 28, 2013
Amended Credit Agreement Due 2017 [Member]
LIBOR [Member]
Sep. 28, 2013
Amended Credit Agreement Due 2017 [Member]
Federal Funds Rate [Member]
Sep. 28, 2013
Senior Note 2021 [Member]
Sep. 29, 2012
Senior Note 2021 [Member]
Sep. 28, 2013
Revolving Credit Facility [Member]
Sep. 29, 2012
Revolving Credit Facility [Member]
Sep. 28, 2013
7.5% Senior Notes due October 1, 2018 [Member]
Sep. 29, 2012
7.5% Senior Notes due October 1, 2018 [Member]
Aug. 01, 2012
7.5% Senior Notes due October 1, 2018 [Member]
Sep. 28, 2013
7.375% Senior Notes due March 15, 2020 [Member]
Sep. 29, 2012
7.375% Senior Notes due March 15, 2020 [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]
Sep. 29, 2012
7.375% Senior Notes due August 1, 2021 [Member]
Aug. 01, 2012
7.375% Senior Notes due August 1, 2021 [Member]
Aug. 14, 2012
Amended Credit Agreement [Member]
364-Day Facility [Member]
Aug. 01, 2012
Amended Credit Agreement [Member]
364-Day Facility [Member]
Sep. 28, 2013
Amended Credit Agreement [Member]
Revolving Credit Facility [Member]
Aug. 01, 2012
Amended Credit Agreement [Member]
Revolving Credit Facility [Member]
Debt Instrument [Line Items]                                                        
Long-term borrowings       $ 1,245,237 $ 1,422,078               $ 100,000 $ 100,000 $ 525,171 $ 529,923   $ 248,600 $ 248,385 $ 371,466     $ 543,770          
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                             28,614 33,366       25,286     40,327          
Net unamortized discount                                   1,400 1,615                  
Date public offering completed                             Aug. 01, 2012     Mar. 23, 2010   Aug. 01, 2012                
Aggregate principal amount                             496,557     250,000   503,443   (157,263)            
Debt instrument repurchase amount                                         23,863 133,400            
Loss on debt extinguishment       (2,144) (2,249) 0                           (2,144)                
Debt instrument repurchase premium and related fees                                       11,759                
Amortization of financing costs                                       2,064                
Unamortized premium                                       (11,678)                
Fair value of debt at acquisition date (in hundredths)                                 106.875%             108.125%        
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%                    
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                    
Revolving credit facility, term                                                     5 years  
Credit Facility, maximum amount                                                   250,000 400,000 400,000
Amount drawn under credit facility                                                   225,000    
Term of facility                                                   364 days    
Repayments of short-term borrowings                                                 225,000      
Standby letters of credit issued under the Revolving Credit Facility                         46,742                              
Available borrowing capacity under Revolving Credit Facility                         253,258                              
Senior Notes [Abstract]                                                        
2014                             103.75%                          
2015                             101.875%     103.688%                    
2016 and thereafter                             100.00%                          
2016                                   102.459%   103.688%                
2017                                   101.229%   102.459%                
2018                                       101.229%                
2018 and thereafter                                   100.00%                    
2019 and thereafter                                       100.00%                
Line of Credit Facility [Line Items]                                                        
Credit facility borrowings       100,000                                                
Revolving Credit Facility and 2020 Senior Notes covenants [Abstract]                                                        
Consolidated interest coverage ratio, minimum 2.0 to 1.0   2.5 to 1.0 2.25 to 1.0                                                
Total consolidated leverage ratio, maximum       7.0 to 1.0                                                
Consolidated fixed charge coverage ratio, minimum       1.75 to 1                                                
Decrease in Consolidated leverage ratio, minimum   4.75 to 1.0   4.75 to 1.0                                                
Decrease in Consolidated leverage ratio during acquisition period, minimum   5.0 to 1.0                                                    
Description of variable rate basis       A portion of the Partnership's borrowings bear interest at prevailing interest rates based upon, at the Operating Partnership's option, LIBOR plus an applicable margin or the base rate, defined as the higher of the Federal Funds Rate plus .5 of 1% or the agent bank's prime rate, or LIBOR plus 1%, plus the applicable margin. The applicable margin is dependent on the level of the Partnership's total leverage (the ratio of total debt to income before deducting interest expense, income taxes, depreciation and amortization ("EBITDA")). Therefore, the Partnership is subject to interest rate risk on the variable component of the interest rate. The Partnership manages part of its variable interest rate risk by entering into interest rate swap agreements. The interest rate swaps have been designated as, and are accounted for as, cash flow hedges. The fair value of the interest rate swaps are determined using an income approach, whereby future settlements under the swaps are converted into a single present value, with fair value being based on the value of current market expectations about those future amounts. Changes in the fair value are recognized in OCI until the hedged item is recognized in earnings. However, due to changes in the underlying interest rate environment, the corresponding value in OCI is subject to change prior to its impact on earnings.         LIBOR Federal Funds Rate                                    
Margin over basis rate (in hundredths)       1.00%         1.00% 0.50%                                    
Weighted average interest rate (in hundredths)               2.80%                                        
Interest rate swap agreement [Abstract]                                                        
Notional Amount       100,000                                                
Effective date       Mar. 31, 2010       Jun. 25, 2013                                        
Termination date       Jun. 25, 2013       Jan. 05, 2017                                        
Fixed interest rate (in hundredths)       3.12%       1.63%                                        
Debt origination costs [Abstract]                                                        
Loss on the extinguishment of debt related to write-off in unamortized debt origination costs and unamortized discount             2,249       2,064                                  
Capitalized debt origination costs       21,254 28,076   10,314         14,885                                
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