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Fair Value Measurements (Asset Fair Market Value Adjustments Charged To Earnings) (Details) (USD $)
In Millions
12 Months Ended
Oct. 02, 2011
Oct. 03, 2010
Property, Plant and Equipment [Member]
  
Carrying value before adjustment$ 8.8[1]$ 26.8[1]
Fair value adjustment(5.9)[1](22.3)[1]
Carrying value after adjustment2.9[1]4.5[1]
Other Assets [Member]
  
Carrying value before adjustment22.1[2] 
Fair value adjustment(22.1)[2] 
Carrying value after adjustment0[2] 
Goodwill [Member]
  
Carrying value before adjustment 4.1[3]
Fair value adjustment (1.6)[3]
Carrying value after adjustment $ 2.5[3]
[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 valuation techniques, including discounted cash flows, comparable transactions, and/or comparable company analyses. The resulting impairment charge was included in other operating expenses.
[3]The fair value was determined using a discounted cash flow model based on future cash flows for the reporting unit, using internal projections. The resulting impairment charge was included in store operating expenses