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Stockholder's Equity (Narrative) (Details) (USD $)
In Millions, except Share data
0 Months Ended3 Months Ended6 Months Ended10 Months Ended
Nov. 04, 2010
Sep. 24, 2011
Sep. 25, 2010
Sep. 24, 2011
Sep. 25, 2010
Sep. 24, 2011
Stockholder's Equity [Abstract]      
Shares of common stock issued for stock option exercises 98,0001,400,000160,0003,300,000 
Share repurchase program, amount approved$ 80     
Shares repurchased   4,900,000 5,100,000
Shares repurchased, value   76.8 79.5
Average cost per share repurchased   $ 15.63 $ 15.51
Remaining amount available for share repurchases under stock repurchase program   $ 0.5