Long-Term Borrowings (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended					12 Months Ended			12 Months Ended		12 Months Ended			12 Months Ended		12 Months Ended			3 Months Ended				12 Months Ended
	Sep. 29, 2012	Sep. 24, 2011	Sep. 25, 2010	Dec. 01, 2015	Sep. 29, 2012 Amended Credit Agreement [Member]	Sep. 29, 2012 Amended Credit Agreement Due 2017 [Member]	Sep. 29, 2012 Senior Note 2021 [Member]	Aug. 01, 2012 364-Day Facility [Member]	Sep. 29, 2012 Revolving Credit Facility [Member]	Sep. 24, 2011 Revolving Credit Facility [Member]	Sep. 29, 2012 Senior Notes Due 2018 [Member]	Aug. 01, 2012 Senior Notes Due 2018 [Member]	Sep. 24, 2011 Senior Notes Due 2018 [Member]	Sep. 29, 2012 Senior Notes Due 2020 [Member]	Sep. 24, 2011 Senior Notes Due 2020 [Member]	Sep. 29, 2012 Senior Notes Due 2021 [Member]	Aug. 01, 2012 Senior Notes Due 2021 [Member]	Sep. 24, 2011 Senior Notes Due 2021 [Member]	Mar. 27, 2010 Senior Notes Due 2013 [Member]	Sep. 29, 2012 Amended Credit Agreement [Member]	Sep. 29, 2012 Amended Credit Agreement [Member] 364-Day Facility [Member]	Aug. 01, 2012 Amended Credit Agreement [Member] 364-Day Facility [Member]	Sep. 29, 2012 Amended Credit Agreement [Member] Revolving Credit Facility [Member]	Aug. 01, 2012 Amended Credit Agreement [Member] Revolving Credit Facility [Member]	Jul. 31, 2012 Amended Credit Agreement [Member] Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term borrowings	$ 1,422,078	$ 348,169							$ 100,000	$ 100,000	$ 529,923		$ 0	$ 248,385	$ 248,169	$ 543,770		$ 0
Stated interest rate (in hundredths)											7.50%			7.375%		7.375%			6.875%
Maturity date									Jan. 05, 2017		Oct. 01, 2018			Mar. 15, 2020		Aug. 01, 2021
Net unamortized discount														1,615	1,831
Net unamortized premium											33,366					40,327
Date public offering completed											2012-08-01			2010-03-23		2012-08-01
Aggregate principal amount											496,557			250,000		503,443
Percentage of interest owned in subsidiary (in hundredths)	100.00%
Fair value of debt at acquisition date (in hundredths)												106.875%					108.125%
Percentage of principal amount at which debt was issued (in hundredths)											106.875%			99.136%		108.125%
Loss on the extinguishment of debt, total	2,249	0	9,473																9,473
Loss on the extinguishment of debt related to repurchase premium and related fees																			7,231
Loss on the extinguishment of debt related to write-off in unamortized debt origination costs and unamortized discount																			2,242
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
Credit Facility, maximum amount																					250,000	250,000	400,000	400,000	250,000
Term Of Facility								364 days														364 days
Revolving Credit Facility, outstanding amount																				225,000		225,000
Repayments of short-term borrowings	225,000	0	0
Revolving Credit Facility, term																							5 years
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%
Standby letters of credit issued under the Revolving Credit Facility									46,842
Available borrowing capacity under Revolving Credit Facility									253,158
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
Total consolidated leverage ratio, maximum	7.0 to 1.0
Consolidated fixed charge coverage ratio, minimum	1.75 to 1
Increase in Consolidated fixed charge coverage ratio, minimum	2.0 to 1.0			2.5 to 1.0
Decrease in Consolidated fixed charge coverage ratio, minimum	5.75 to 1.0			4.75 to 1.0
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
Capitalized debt origination costs	28,076	7,207			10,314		14,885
Long-term debt maturities [Abstract]
Long-term debt maturities, 2013	0
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 and thereafter	$ 1,250,000