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Selected Quarterly Financial Data Selected Quarterly Financial Data (Details Textuals) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended 36 Months Ended
Dec. 27, 2011
Sep. 27, 2011
Sep. 28, 2010
Jun. 29, 2010
Dec. 27, 2011
Selected Quarterly Financial Information [Abstract]          
Impact of Share Repurchase On Earnings Per Share Diluted (in dollars per share) $ 0.01 $ 0.01 $ 0.01 $ 0.01  
Treasury Stock, Shares, Acquired (in shares) 26,700 850,400 1,007,984 897,556  
Stock Repurchase Program, Authorized Amount         $ 600.0
Unclaimed Property Audit Charge       $ 2.5  
Unusual or Infrequent Item, Earnings Per Share Impact, Net (in dollars per share)       $ 0.05