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Net Income Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 26, 2015
Dec. 27, 2014
Basic net income per share      
Net income, basic $ 437,120 $ 410,395 $ 370,885
Shares, basic 132,905 135,582 137,769
Per share amount, basic (in dollars per share) $ 3.29 $ 3.03 $ 2.69
Dilutive stock options and restricted stock units outstanding, income $ 0 $ 0  
Dilutive stock options and restricted stock units outstanding, shares 908 1,263 1,666
Dilutive stock options and restricted stock units outstanding, per share (in dollars per share) $ (0.02) $ (0.03) $ (0.03)
Diluted net income per share      
Shares, diluted 133,813 136,845 139,435
Diluted net income per share (in dollars per share) $ 3.27 $ 3.00 $ 2.66
Anitdilutive securities excluded from computation of earnings per share 1,900 900 1,000