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Stock-Based Compensation (Details) (USD $)
In Millions, unless otherwise specified
9 Months Ended
Jun. 23, 2012
Jun. 25, 2011
Stock-Based Compensation (Textual) [Abstract]    
Recognized share-based compensation expense $ 5.3 $ 5.7
Tax benefit associated with share-based compensation expense $ 2.0 $ 2.1