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Stockholders' Equity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jul. 21, 2016
Apr. 21, 2016
Jun. 28, 2016
Jun. 30, 2015
Jun. 28, 2016
Jun. 30, 2015
Dec. 29, 2015
Stockholders Equity:              
Cash dividends declared per common share (in dollars per share)   $ 0.20 $ 0.20 $ 0.165 $ 0.40 $ 0.33  
Repurchased shares since program inception     45,622,532   45,622,532   44,064,322
Value of shares repurchased since program inception     $ 1,340,052   $ 1,340,052   $ 1,263,422
Treasury stock repurchased during period         $ 76,630    
Subsequent event              
Stockholders Equity:              
Cash dividends declared per common share (in dollars per share) $ 0.24            
Treasury Stock              
Stockholders Equity:              
Additional number of shares authorized to repurchase     48,500,000   48,500,000    
Repurchased shares since program inception     45,600,000   45,600,000    
Value of shares repurchased since program inception     $ 1,340,100   $ 1,340,100    
Shares repurchased during period     500,000        
Treasury stock repurchased during period     $ 26,600        
Treasury Stock | Subsequent event              
Stockholders Equity:              
Additional number of shares authorized to repurchase 7,500,000