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Income Taxes (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 29, 2018 | Dec. 30, 2017 | Sep. 30, 2017 | Sep. 29, 2018 | Sep. 30, 2017
Income Tax Disclosure [Abstract] |  |  |  |  |
Effective tax rate (in hundredths) |  |  |  | 23.30% | 26.30%
Unrecognized tax benefits | $ 104,600 |  |  | $ 104,600 |
Unrecognized tax benefits that would affect the effective tax rate if recognized | 83,000 |  |  | 83,000 |
Total interest | 15,300 |  |  | 15,300 |
Total penalties | 0 |  |  | $ 0 |
Other Information Pertaining to Income Taxes |  |  |  | In 2016, we reached a settlement on a portion of the IRS audit of tax years 2012 and 2013, and we filed a Mutual Agreement Procedure request with the IRS for assistance from the U.S. Competent Authority for an open Transfer Pricing issue which resulted in a partial settlement during the quarter ended December 30, 2017. During the quarter ended June 30, 2017, we filed a protest with the Appellate Division regarding the remaining open audit issues for the years 2012 and 2013. We had an initial Appeals Conference during the third quarter of 2018. In addition, we are working on finalizing our submission for an Advanced Pricing Agreement pursuant to which Henry Schein, Inc. and the IRS would agree on an appropriate transfer pricing methodology for future tax years. We do not expect this to have a material effect on our consolidated financial position, liquidity or results of operations. |
Income Tax Examination [Line Items] |  |  |  |  |
Income Tax Expense (Benefit) | $ 29,401 |  | $ 59,340 | $ 124,084 | $ 156,276
Provision for transitional tax |  | $ 140,000 |  |  |
Revaluation of deferred tax assets and liabilities |  | $ 3,000 |  |  |
Tax Cuts and Jobs Act, Incomplete Accounting, Provisional Income Tax (Benefit) |  |  |  | 10,000 |
Tax Cuts and Jobs Act, revaluation of deferred tax asset (liability) |  |  |  | 1,500 |
Accounting Standards Update 2016-09 [Member] |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |
Income Tax Expense (Benefit) |  |  |  | $ (1,000) | $ (19,500)

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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the revaluation for deferred tax assets and liabilities. + References No definition available. + Details
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