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Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2015
Oct. 03, 2015
Jul. 04, 2015
Apr. 04, 2015
Dec. 31, 2014
Sep. 27, 2014
Jun. 28, 2014
Mar. 29, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Earnings Per Share Reconciliation [Abstract]                      
Net income $ 151,054 $ 116,281 $ 105,657 $ 96,061 $ 151,292 $ 113,497 $ 96,529 $ 70,302 $ 469,053 $ 431,620 $ 450,003
Net income per basic common share $ 1.85 $ 1.42 $ 1.28 $ 1.16 $ 1.82 $ 1.36 $ 1.14 $ 0.83 $ 5.70 $ 5.12 $ 5.27
Effect of dilutive stock option, restricted stock and restricted stock unit securities on earnings per share                 (0.05) (0.05) (0.07)
Net income per diluted common share $ 1.83 $ 1.40 $ 1.27 $ 1.15 $ 1.80 $ 1.34 $ 1.13 $ 0.82 $ 5.65 $ 5.07 $ 5.20
Weighted-average number of basic common shares 81,650 82,036 82,564 83,025 83,217 83,663 84,462 84,977 82,336 84,358 85,426
Effect of dilutive stock option, restricted stock and restricted stock unit securities on shares outstanding                 751 793 1,120
Weighted-average number of diluted common shares and equivalents 82,382 82,784 83,332 83,752 84,015 84,401 85,177 85,873 83,087 85,151 86,546
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]                      
Antidilutive securities excluded from computation of earnings per share                 1,200 1,000 1,100