Fair Value Measurements (Financial Assets And Liabilities Measured At Fair Value On Recurring Basis) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Apr. 10, 2016	Apr. 12, 2015	Apr. 10, 2016	Apr. 12, 2015	Sep. 27, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Impairment Charges		$ 0	$ 27	$ 0	$ 41
Total liabilities at fair value		(80,641)		(80,641)		$ (61,377)
Interest Rate Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities at fair value	[1]	(44,237)		(44,237)		(26,374)
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities at fair value	[2]	(36,404)		(36,404)		(35,003)
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Interest Rate Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities at fair value	[1],[2]	0		0		0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities at fair value	[2]	(44,237)		(44,237)		(26,374)
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities at fair value	[1],[2]	(44,237)		(44,237)		(26,374)
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities at fair value	[2]	0		0		0
Fair Value, Inputs, Level 3 [Member] | Interest Rate Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities at fair value	[1],[2]	0		0		0
Non Qualified Deferred Compensation Plan [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities at fair value	[3]	(36,404)		(36,404)		(35,003)
Non Qualified Deferred Compensation Plan [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities at fair value	[2],[3]	(36,404)		(36,404)		(35,003)
Non Qualified Deferred Compensation Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities at fair value	[2],[3]	0		0		0
Non Qualified Deferred Compensation Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities at fair value	[2],[3]	$ 0		$ 0		$ 0

[1] We entered into interest rate swaps to reduce our exposure to rising interest rates on our variable rate debt. The fair values of our interest rate swaps are based upon Level 2 inputs which include valuation models as reported by our counterparties. The key inputs for the valuation models are quoted market prices, discount rates and forward yield curves.

[2] We did not have any transfers in or out of Level 1, 2 or 3.

[3] We maintain an unfunded defined contribution plan for key executives and other members of management. The fair value of this obligation is based on the closing market prices of the participants’ elected investments.