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Quarterly Information (Unaudited) (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Dec. 30, 2017
Sep. 30, 2017
Jul. 01, 2017
Apr. 01, 2017
Dec. 31, 2016
Sep. 24, 2016
Jun. 25, 2016
Mar. 26, 2016
Dec. 30, 2017
Dec. 31, 2016
Dec. 26, 2015
Quarterly Financial Data [Abstract]                      
Net sales $ 3,318,054 $ 3,161,083 $ 3,059,458 $ 2,922,948 $ 3,120,934 $ 2,865,148 $ 2,872,630 $ 2,712,956 $ 12,461,543 $ 11,571,668 $ 10,629,719
Gross profit 900,956 836,054 839,173 822,920 859,487 787,675 801,469 777,842 3,399,103 3,226,473 3,006,954
Restructuring costs 0 0 0 0 16,080 5,370 20,383 4,058 0 45,891 34,931
Operating income 241,191 213,548 210,662 193,968 213,982 200,721 180,677 176,194 859,369 771,574 733,972
Net income 8,510 150,948 149,582 150,253 153,473 145,291 133,098 124,533 459,293 556,395 523,427
Amounts attributable to Henry Schein, Inc.:                      
Net income $ (8,535) $ 138,031 $ 136,055 $ 140,748 $ 139,216 $ 133,713 $ 120,097 $ 113,752 $ 406,299 $ 506,778 $ 479,058
Earnings per share attributable to Henry Schein, Inc.:                      
Basic (in dollars per share) $ (0.06) $ 0.88 $ 0.86 $ 0.89 $ 0.88 $ 0.83 $ 0.74 $ 0.7 $ 2.59 $ 3.14 $ 2.89
Diluted (in dollars per share) $ (0.06) $ 0.87 $ 0.86 $ 0.88 $ 0.86 $ 0.82 $ 0.73 $ 0.69 $ 2.57 $ 3.1 $ 2.85