Fair Value Measurements (Asset Fair Market Value Adjustments Charged To Earnings) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Apr. 01, 2012		Apr. 03, 2011		Apr. 01, 2012		Apr. 03, 2011
Property, Plant And Equipment [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value before adjustment	$ 2.8	[1]	$ 0	[1]	$ 3.3	[1]	$ 1.1	[1]
Fair value adjustment	(1.7)	[1]	0	[1]	(2.0)	[1]	(0.9)	[1]
Carrying value after adjustment	1.1	[1]	0	[1]	1.3	[1]	0.2	[1]
Other Assets [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value before adjustment			10.2	[2]			24.2	[2]
Fair value adjustment			(6.5)	[2]			(20.5)	[2]
Carrying value after adjustment			$ 3.7	[2]			$ 3.7	[2]

[1] These assets primarily consist of leasehold improvements in underperforming stores. The fair value was determined using a discounted cash flow model based on expected future store revenues and operating costs, using internal projections. The resulting impairment charge was included in store operating expenses.

[2] The fair value was determined using a discounted cash flow model based on future expected revenues and operating costs, using internal projections. The resulting impairment charge was included in other operating expenses.