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Stock Repurchase (Details) - USD ($)
shares in Millions, $ in Millions
9 Months Ended
Sep. 26, 2015
Sep. 27, 2014
May. 21, 2015
Feb. 09, 2015
Dec. 27, 2014
Equity, Class of Treasury Stock [Line Items]          
Share repurchase plan, authorized amount $ 505.0   $ 75.0 $ 75.0  
Share repurchase plan, remaining authorized amount       102.1  
Share repurchase plan, authorized amount available $ 430.0        
Share repurchase plan, common stock repurchased, shares 11.6 1.4      
Share repurchase plan, common stock repurchased, value $ 102.1 $ 8.9      
2012 Stock Repurchase Program [Member]          
Equity, Class of Treasury Stock [Line Items]          
Share repurchase plan, authorized amount         $ 275.0
Share repurchase plan, remaining authorized amount       $ 27.1