Financial Instruments and Risk Management, By Income Statement Location (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended									3 Months Ended				6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
	Mar. 30, 2013	Mar. 24, 2012	Sep. 29, 2012	Mar. 30, 2013 7.5% senior notes due October 1, 2018 [Member]	Sep. 29, 2012 7.5% senior notes due October 1, 2018 [Member]	Mar. 30, 2013 7.375% senior notes due March 15, 2020 [Member]	Sep. 29, 2012 7.375% senior notes due March 15, 2020 [Member]	Mar. 30, 2013 7.375% senior notes due August 1, 2021 [Member]	Sep. 29, 2012 7.375% senior notes due August 1, 2021 [Member]	Mar. 30, 2013 Derivatives Not Designated as Hedging Instruments [Member]	Mar. 24, 2012 Derivatives Not Designated as Hedging Instruments [Member]	Mar. 30, 2013 Derivatives Designated as Hedging Instruments [Member]	Mar. 24, 2012 Derivatives Designated as Hedging Instruments [Member]	Mar. 30, 2013 Derivatives Designated as Hedging Instruments [Member]	Mar. 24, 2012 Derivatives Designated as Hedging Instruments [Member]	Mar. 30, 2013 Commodity-Related Derivatives [Member] Cost of Products Sold [Member] Derivatives Not Designated as Hedging Instruments [Member]	Mar. 24, 2012 Commodity-Related Derivatives [Member] Cost of Products Sold [Member] Derivatives Not Designated as Hedging Instruments [Member]	Mar. 30, 2013 Commodity-Related Derivatives [Member] Cost of Products Sold [Member] Derivatives Not Designated as Hedging Instruments [Member]	Mar. 24, 2012 Commodity-Related Derivatives [Member] Cost of Products Sold [Member] Derivatives Not Designated as Hedging Instruments [Member]	Mar. 30, 2013 Interest Rate Swaps [Member] Derivatives Designated as Hedging Instruments [Member]	Mar. 24, 2012 Interest Rate Swaps [Member] Derivatives Designated as Hedging Instruments [Member]	Mar. 30, 2013 Interest Rate Swaps [Member] Derivatives Designated as Hedging Instruments [Member]	Mar. 24, 2012 Interest Rate Swaps [Member] Derivatives Designated as Hedging Instruments [Member]	Mar. 30, 2013 Interest Rate Swaps [Member] Interest Expense [Member] Derivatives Designated as Hedging Instruments [Member]	Mar. 24, 2012 Interest Rate Swaps [Member] Interest Expense [Member] Derivatives Designated as Hedging Instruments [Member]	Mar. 30, 2013 Interest Rate Swaps [Member] Interest Expense [Member] Derivatives Designated as Hedging Instruments [Member]	Mar. 24, 2012 Interest Rate Swaps [Member] Interest Expense [Member] Derivatives Designated as Hedging Instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) Recognized in OCI (Effective Portion)												$ 270	$ (695)	$ 116	$ (378)					$ 270	$ (695)	$ 116	$ (378)
Gains (Losses) Reclassified from Accumulated OCI into Income (Effective Portion)												(740)	(643)	(1,601)	(1,338)									(740)	(643)	(1,601)	(1,338)
Amount of Unrealized Gains (Losses) Recognized in Income	(6,260)	(1,048)								(2,646)	0					(2,646)	0	(6,260)	(1,048)
Debt Instrument [Line Items]
Fair Value of Senior Notes	$ 1,350,000		$ 1,346,276	$ 536,282	$ 531,316	$ 270,000	$ 272,500	$ 543,718	$ 542,460