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Legal Proceedings (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Oct. 09, 2018 | Sep. 29, 2018 | Sep. 30, 2017 | Sep. 29, 2018 | Sep. 30, 2017 | Dec. 30, 2017
Loss Contingency, Information about Litigation Matters [Abstract] |  |  |  |  |  |
Litigation settlements |  | $ 38,488 | $ 0 | $ 38,488 | $ 5,325 |
Loss Contingency, Management's Assessment and Process |  |  |  | As of September 29, 2018, we had accrued our best estimate of potential losses relating to claims that were probable to result in liability and for which we were able to reasonably estimate a loss. This accrued amount, as well as related expenses, was not material to our financial position, results of operations or cash flows. Our method for determining estimated losses considers currently available facts, presently enacted laws and regulations and other factors, including probable recoveries from third parties. |  |
Class Action Complaints Against Patterson Companies, Inc., Benco Dental Supply Co. and Henry Schein, Inc. [Member] |  |  |  |  |  |
Loss Contingency, Information about Litigation Matters [Abstract] |  |  |  |  |  |
Loss Contingency, Lawsuit Filing Date |  |  |  | January 2016 |  |
Loss Contingency, Name of Defendant |  |  |  | Patterson Companies, Inc. (“Patterson”), Benco Dental Supply Co. (“Benco”) and Henry Schein, Inc. |  |
Loss Contingency, Name of Plaintiff |  |  |  | class action complaints |  |
Loss Contingency, Allegations |  |  |  | Each of these complaints allege, among other things, that defendants conspired to fix prices, allocate customers and foreclose competitors by boycotting manufacturers, state dental associations and others that deal with defendants’ competitors. |  |
Litigation settlements |  |  |  | $ 38,500 |  |
Archer and White Sales, Inc. v. collectively, the Danaher Defendants [Member] |  |  |  |  |  |
Loss Contingency, Information about Litigation Matters [Abstract] |  |  |  |  |  |
Loss Contingency, Lawsuit Filing Date |  |  |  | August 31, 2012 |  |
Loss Contingency, Name of Defendant |  |  |  | Henry Schein, Inc. as well as Danaher Corporation and its subsidiaries Instrumentarium Dental, Inc., Dental Equipment, LLC, Kavo Dental Technologies, LLC and Dental Imaging Technologies Corporation (collectively, the “Danaher Defendants”) |  |
Loss Contingency, Name of Plaintiff |  |  |  | Archer and White Sales, Inc |  |
Loss Contingency, Allegations |  |  |  | Archer alleges a conspiracy between Henry Schein, an unnamed company and the Danaher Defendants to terminate or limit Archer’s distribution rights. |  |
Archer filed amended complaint adding Patterson and Benco as Defendants [Member] |  |  |  |  |  |
Loss Contingency, Information about Litigation Matters [Abstract] |  |  |  |  |  |
Loss Contingency, Lawsuit Filing Date |  |  |  | August 1, 2017 |  |
Loss Contingency, Name of Defendant |  |  |  | Henry Schein, Inc. as well as Danaher Corporation and its subsidiaries Instrumentarium Dental, Inc., Dental Equipment, LLC, Kavo Dental Technologies, LLC and Dental Imaging Technologies Corporation (collectively, the “Danaher Defendants”), Patterson Companies, Inc. (“Patterson”), Benco Dental Supply Co. (“Benco”) |  |
Loss Contingency, Name of Plaintiff |  |  |  | Archer and White Sales, Inc. |  |
Loss Contingency, Allegations |  |  |  | alleging that Henry Schein, Patterson, Benco and Burkhart conspired to fix prices and refused to compete with each other for sales of dental equipment to dental professionals and agreed to enlist their common suppliers, the Danaher Defendants, to join a price-fixing conspiracy and boycott by reducing the distribution territory of, and eventually terminating, their price-cutting competing distributor Archer. |  |
Archer filed second amended complaint under seal [Member] |  |  |  |  |  |
Loss Contingency, Information about Litigation Matters [Abstract] |  |  |  |  |  |
Loss Contingency, Lawsuit Filing Date |  |  |  | October 30, 2017 |  |
Loss Contingency, Name of Defendant |  |  |  | Henry Schein, Inc. as well as Danaher Corporation and its subsidiaries Instrumentarium Dental, Inc., Dental Equipment, LLC, Kavo Dental Technologies, LLC and Dental Imaging Technologies Corporation (collectively, the “Danaher Defendants”), Patterson Companies, Inc. (“Patterson”), Benco Dental Supply Co. (“Benco”) |  |
Loss Contingency, Name of Plaintiff |  |  |  | Archer and White Sales, Inc. |  |
Loss Contingency, Allegations |  |  |  | additional allegations that it believes support its claims. |  |
IQ Dental Supply, Inc V. Henry Schein, Inc. Patterson Companies, Inc. [Member] |  |  |  |  |  |
Loss Contingency, Information about Litigation Matters [Abstract] |  |  |  |  |  |
Loss Contingency, Lawsuit Filing Date |  |  |  | August 17, 2017 |  |
Loss Contingency, Name of Defendant |  |  |  | Henry Schein, Inc., Patterson Companies, Inc. and Benco Dental Supply Company |  |
Loss Contingency, Name of Plaintiff |  |  |  | IQ Dental Supply, Inc. |  |
Loss Contingency, Allegations |  |  |  | Plaintiff alleges that it is a distributor of dental supplies and equipment, and sells dental products through an online dental distribution platform operated by SourceOne Dental (“SourceOne”). |  |
United States Federal Trade Commission [Member] |  |  |  |  |  |
Loss Contingency, Information about Litigation Matters [Abstract] |  |  |  |  |  |
Loss Contingency, Lawsuit Filing Date |  |  |  | February 12, 2018 |  |
Loss Contingency, Name of Defendant |  |  |  | Benco Dental Supply Co., Henry Schein, Inc. and Patterson Companies, Inc. |  |
Loss Contingency, Name of Plaintiff |  |  |  | United States Federal Trade Commission |  |
Loss Contingency, Allegations |  |  |  | The FTC alleges, among other things, that defendants violated U.S. antitrust laws by conspiring, and entering into an agreement, to refuse to provide discounts to or otherwise serve buying groups representing dental practitioners. |  |
Salkowitz v. Henry Schein, Inc. et al [Member] |  |  |  |  |  |
Loss Contingency, Information about Litigation Matters [Abstract] |  |  |  |  |  |
Loss Contingency, Lawsuit Filing Date |  |  |  | March 7, 2018 |  |
Loss Contingency, Name of Defendant |  |  |  | Joseph Salkowitz, individually and on behalf of all others similarly situated |  |
Loss Contingency, Name of Plaintiff |  |  |  | Henry Schein, Stanley M. Bergman, and Steven Paladino |  |
Loss Contingency, Allegations |  |  |  | The complaint alleged, among other things, that the defendants had made materially false and misleading statements about Henry Schein’s business, operations and prospects during the Class Period, including matters relating to the issues in the antitrust class action and the FTC action described above, thereby causing the plaintiff and members of the purported class to pay artificially inflated prices for Henry Schein securities. |  |
Marion Diagnostic Center, LLC, et al. v. Becton, Dickinson, and Co., et al [Member] |  |  |  |  |  |
Loss Contingency, Information about Litigation Matters [Abstract] |  |  |  |  |  |
Loss Contingency, Lawsuit Filing Date |  |  |  | May 3, 2018 |  |
Loss Contingency, Name of Defendant |  |  |  | Becton, Dickinson, and Co. (“Becton”); Vizient, Inc. (“Vizient”); Cardinal Health, Inc. (“Cardinal”); Owens & Minor Inc. (“O&M”); and Henry Schein, Inc. |  |
Loss Contingency, Name of Plaintiff |  |  |  | Marion Diagnostic Center, LLC |  |
Loss Contingency, Allegations |  |  |  | The complaint alleges that the defendants entered into a vertical conspiracy to force healthcare providers into long-term exclusionary contracts that restrain trade in the nationwide markets for conventional and safety syringes and safety IV catheters and that inflate the prices of certain Becton products to above-competitive levels. |  |
The County of Summit, Ohio et al. v. Purdue Pharma, L.P., et al [Member] |  |  |  |  |  |
Loss Contingency, Information about Litigation Matters [Abstract] |  |  |  |  |  |
Loss Contingency, Lawsuit Filing Date |  |  |  | May 29, 2018 |  |
Loss Contingency, Name of Defendant |  |  |  | Henry Schein, Inc., Henry Schein Medical Systems, Inc. and others as defendants |  |
Loss Contingency, Name of Plaintiff |  |  |  | The County of Summit, Ohio et al. |  |
Loss Contingency, Allegations |  |  |  | Plaintiffs allege that manufacturers of prescription opioid drugs engaged in a false advertising campaign to expand the market for such drugs and their own market share and that the entities in the supply chain (including Henry Schein, Inc. and Henry Schein Medical Systems, Inc.) reaped financial rewards by refusing to monitor and restrict the improper distribution of those drugs. |  |
City of Barberton, et al. v. Purdue Pharma, L.P., et al. [Member] |  |  |  |  |  |
Loss Contingency, Information about Litigation Matters [Abstract] |  |  |  |  |  |
Loss Contingency, Lawsuit Filing Date |  |  |  | July 3, 2018 |  |
Loss Contingency, Name of Defendant |  |  |  | Henry Schein, Inc., Henry Schein Medical Systems, Inc. and others |  |
Loss Contingency, Name of Plaintiff |  |  |  | City of Barberton, Ohio (and related entities) |  |
Loss Contingency, Allegations |  |  |  | similar to The County of Summit complaint |  |
City of Barberton, et al. v. Purdue Pharma, L.P., et al. [Member] | North America [Member] |  |  |  |  |  |
Loss Contingency, Information about Litigation Matters [Abstract] |  |  |  |  |  |
Sales of opioids, percentage |  |  |  |  |  | 1.00%
Kramer v. Henry Schein, Inc., Patterson Co., Inc., Benco Dental Supply Co., and Unnamed Co-Conspirators [Member] | Subsequent Event [Member] |  |  |  |  |  |
Loss Contingency, Information about Litigation Matters [Abstract] |  |  |  |  |  |
Loss Contingency, Lawsuit Filing Date | October 9, 2018 |  |  |  |  |
Loss Contingency, Name of Defendant | Henry Schein, Inc., Patterson Co., Inc., Benco Dental Supply Co., and Unnamed Co-Conspirators |  |  |  |  |
Loss Contingency, Name of Plaintiff | Kramer |  |  |  |  |
Loss Contingency, Allegations | The complaint alleges that the alleged conspiracy overcharged California dental practices, orthodontic practices, and dental laboratories on their purchase of dental supplies, which in turn passed on some or all of such overcharges to members of the California class purchasing dental services. |  |  |  |  |

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