$HSIC
HENRY SCHEIN INC Stock $hsic

$hsic Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-K Financial Statement

#000100022821000019 Filed on February 17, 2021

Income Statement

Concept	2020 Q4	2020 Q1	2020
Revenue	$3.166B	$2.429B	$10.12B
YoY Change	18.61%	2.91%	1.34%
Cost Of Revenue	$2.306B	$1.683B	$7.305B
YoY Change	24.09%	4.62%	5.95%
Gross Profit	$859.7M	$746.0M	$2.814B
YoY Change	6.06%	-0.75%	-8.95%
Gross Profit Margin	27.16%	30.72%	27.81%
Selling, General & Admin	$674.1M	$567.4M	$2.247B
YoY Change	9.56%	-1.26%	-4.71%
% of Gross Profit	78.41%	76.05%	79.84%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$44.80M	$46.98M	$185.5M
YoY Change	-8.01%	16.58%	0.32%
% of Gross Profit	5.21%	6.3%	6.59%
Operating Expenses	$674.1M	$567.4M	$2.247B
YoY Change	9.54%	-1.26%	-4.71%
Operating Profit	$181.2M	$173.9M	$535.3M
YoY Change	-7.71%	0.83%	-25.47%
Interest Expense	-$9.600M	$7.812M	$41.38M
YoY Change	62.71%	-52.08%	-18.54%
% of Operating Profit	-5.3%	4.49%	7.73%
Other Income/Expense, Net	-$1.700M	-$220.0K	-$3.873M
YoY Change	88.89%	-47.49%	32.68%
Pretax Income	$169.9M	$169.0M	$430.8M
YoY Change	-10.34%	5.32%	-15.02%
Income Tax	$29.40M	$37.91M	$95.37M
% Of Pretax Income	17.3%	22.43%	22.14%
Net Earnings	$142.6M	$130.3M	$403.8M
YoY Change	-56.87%	18.65%	-41.88%
Net Earnings / Revenue	4.5%	5.36%	3.99%
Basic Earnings Per Share	$1.00	$0.91	$2.83
Diluted Earnings Per Share	$0.99	$0.91	$2.82
COMMON SHARES
Basic Shares Outstanding	142.8M shares	143.0M shares	142.5M shares
Diluted Shares Outstanding		143.1M shares	143.4M shares

Balance Sheet

Concept	2020 Q4	2020 Q1	2020
SHORT-TERM ASSETS
Cash & Short-Term Investments	$421.2M	$617.4M	$421.2M
YoY Change	296.98%	600.79%	296.98%
Cash & Equivalents	$421.0M	$617.4M	$421.2M
Short-Term Investments
Other Short-Term Assets	$432.9M	$474.6M	$432.9M
YoY Change	-2.81%	3.72%	-2.81%
Inventory	$1.512B	$1.328B	$1.513B
Prepaid Expenses
Receivables	$1.425B	$1.199B	$1.425B
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$3.791B	$3.619B	$3.791B
YoY Change	17.51%	16.4%	17.51%
LONG-TERM ASSETS
Property, Plant & Equipment	$342.0M	$328.0M	$630.9M
YoY Change	3.75%	4.01%	12.4%
Goodwill	$2.504B	$2.471B
YoY Change	1.7%	2.36%
Intangibles	$479.4M	$554.7M
YoY Change	-16.31%	-15.26%
Long-Term Investments	$366.4M	$331.6M	$169.4M
YoY Change	11.74%	-17.92%	-18.4%
Other Assets			$162.3M
YoY Change			111.6%
Total Long-Term Assets	$3.981B	$3.900B	$3.981B
YoY Change	1.44%	-3.36%	1.44%
TOTAL ASSETS
Total Short-Term Assets	$3.791B	$3.619B	$3.791B
Total Long-Term Assets	$3.981B	$3.900B	$3.981B
Total Assets	$7.773B	$7.519B	$7.773B
YoY Change	8.69%	5.24%	8.69%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.006B	$780.9M	$1.006B
YoY Change	14.24%	12.32%	14.25%
Accrued Expenses	$955.6M	$763.4M	$884.1M
YoY Change	11.23%	7.2%	2.91%
Deferred Revenue	$71.50M	$64.70M
YoY Change	0.99%	2.05%
Short-Term Debt	$73.37M	$381.9M	$73.40M
YoY Change	206.01%	27.34%	205.83%
Long-Term Debt Due	$109.8M	$109.5M	$109.8M
YoY Change	0.0%	1103.3%	0.0%
Total Short-Term Liabilities	$2.283B	$2.206B	$2.283B
YoY Change	12.01%	17.41%	12.0%
LONG-TERM LIABILITIES
Long-Term Debt	$515.8M	$865.8M	$515.8M
YoY Change	-17.19%	-11.06%	-17.19%
Other Long-Term Liabilities	$392.8M	$333.4M	$631.5M
YoY Change	18.6%	1.95%	24.46%
Total Long-Term Liabilities	$392.8M	$333.4M	$1.147B
YoY Change	18.6%	1.95%	1.5%
TOTAL LIABILITIES
Total Short-Term Liabilities	$2.283B	$2.206B	$2.283B
Total Long-Term Liabilities	$392.8M	$333.4M	$1.147B
Total Liabilities	$3.460B	$3.641B	$4.424B
YoY Change	7.01%	5.74%	6.53%
SHAREHOLDERS EQUITY
Retained Earnings	$3.455B	$3.183B
YoY Change	10.87%	11.33%
Common Stock
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$3.348B	$2.975B	$3.348B
YoY Change
Total Liabilities & Shareholders Equity	$7.773B	$7.519B	$7.773B
YoY Change	8.69%	5.24%	8.69%

Cashflow Statement

Concept	2020 Q4	2020 Q1	2020
OPERATING ACTIVITIES
Net Income	$142.6M	$130.3M	$403.8M
YoY Change	-56.87%	18.65%	-41.88%
Depreciation, Depletion And Amortization	$44.80M	$46.98M	$185.5M
YoY Change	-8.01%	16.58%	0.32%
Cash From Operating Activities	$349.8M	$78.48M	$598.9M
YoY Change	19.55%	-332.59%	-8.44%
INVESTING ACTIVITIES
Capital Expenditures	-$11.00M	-$23.00M	-$48.80M
YoY Change	-59.56%	44.65%	-35.96%
Acquisitions
YoY Change
Other Investing Activities	-$10.00M	$5.787M	$18.79M
YoY Change	-103.37%	88.13%	32.59%
Cash From Investing Activities	-$21.00M	-$53.61M	-$115.0M
YoY Change	-107.81%	-91.04%	-72.9%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$73.79M	$73.79M
YoY Change		-50.81%	-85.94%
Debt Paid & Issued, Net		$8.478M	$611.2M
YoY Change		14.94%	134.23%
Cash From Financing Activities	-451.0M	$491.9M	-$187.2M
YoY Change	-15.98%	-22.19%	-13.33%
NET CHANGE
Cash From Operating Activities	349.8M	$78.48M	$598.9M
Cash From Investing Activities	-21.00M	-$53.61M	-$115.0M
Cash From Financing Activities	-451.0M	$491.9M	-$187.2M
Net Change In Cash	-122.2M	$511.3M	$315.1M
YoY Change	-592.74%	6366.87%	1117.12%
FREE CASH FLOW
Cash From Operating Activities	$349.8M	$78.48M	$598.9M
Capital Expenditures	-$11.00M	-$23.00M	-$48.80M
Free Cash Flow	$360.8M	$101.5M	$647.7M
YoY Change	12.82%	-668.84%	-11.31%

Facts In Submission

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CY2020	dei	Entity Registrant Name EntityRegistrantName	HENRY SCHEIN INC
CY2020	dei	Security Exchange Name SecurityExchangeName	NASDAQ
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CY2020	dei	Entity Small Business EntitySmallBusiness	false
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CY2020	dei	Entity File Number EntityFileNumber	0-27078
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	11-3136595
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	135 Duryea Road
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CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	NY
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CY2020	dei	City Area Code CityAreaCode	631
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CY2020	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	418437000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	725461000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	450441000	USD
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	986000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-6323000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	111685000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	419423000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	719138000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	562126000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	15629000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	24770000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	19724000	USD
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	0	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	-366000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	6521000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	403794000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	694734000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	535881000	USD
CY2020	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	402808000	USD
CY2019	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	700691000	USD
CY2018	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	430717000	USD
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	986000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-5957000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	105164000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	403794000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	694734000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	535881000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.83
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	4.74
CY2018	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.82
CY2020	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.81
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	4.69
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.91
CY2018	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.80
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.01
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.04
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.69
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.01
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.04
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.68
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.83
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.70
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.51
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.82
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.65
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.49
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	142504000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	152656000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	143404000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	149257000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	153707000	shares
CY2020	us-gaap	Profit Loss ProfitLoss	419423000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	719138000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	562126000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	63094000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-4070000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-136356000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-3876000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	626000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-5000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	12000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-3000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-143000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	5924000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-3033000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	55776000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-13858000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-132700000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	475199000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	705280000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	429426000	USD
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	15629000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	24404000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	26245000	USD
CY2020	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	-3513000	USD
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	-1848000	USD
CY2018	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	-13996000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	22556000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	12249000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	463083000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2824410000	USD
CY2018	us-gaap	Temporary Equity Net Income TemporaryEquityNetIncome	21848000	USD
CY2018	us-gaap	Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	540278000	USD
CY2018	hsic	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax Excluding Portion Attributable To Redeemable Noncontrolling Interest OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxExcludingPortionAttributableToRedeemableNoncontrollingInterest	-123325000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	396000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	626000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-3000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-1179000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-3033000	USD
CY2018	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	656000	USD
CY2018	us-gaap	Stockholders Equity Other StockholdersEquityOther	-694000	USD
CY2018	hsic	Noncontrolling Interest Decrease From Purchase Of Interests NoncontrollingInterestDecreaseFromPurchaseOfInterests	214000	USD
CY2018	hsic	Changes In Fair Value Of Redeemable Securities ChangesInFairValueOfRedeemableSecurities	-148919000	USD
CY2018	hsic	Initial Noncontrolling Interests And Adjustments Related To Business Acquisitions InitialNoncontrollingInterestsAndAdjustmentsRelatedToBusinessAcquisitions	564270000	USD
CY2018	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	200000000	USD
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	3076000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	36240000	USD
CY2018	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	18143000	USD
CY2018	hsic	Adjustments To Additional Paid In Capital Share Based Compensation Other Longterm Incentive Plans Settled In Cash AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationOtherLongtermIncentivePlansSettledInCash	727000	USD
CY2018	hsic	Deferred Taxes Purchases Of Noncontrolling Interest In Certain Subsidiaries DeferredTaxesPurchasesOfNoncontrollingInterestInCertainSubsidiaries	58554000	USD
CY2018	hsic	Reclassification Of Additional Paid In Capital To Retained Earnings ReclassificationOfAdditionalPaidInCapitalToRetainedEarnings	0	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3541788000	USD
CY2019	us-gaap	Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	704666000	USD
CY2019	hsic	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax Excluding Portion Attributable To Redeemable Noncontrolling Interest OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxExcludingPortionAttributableToRedeemableNoncontrollingInterest	-2327000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-1035000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-3876000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	2000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	12000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	1806000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	5924000	USD
CY2019	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	535000	USD
CY2019	us-gaap	Stockholders Equity Other StockholdersEquityOther	3000	USD
CY2019	hsic	Changes In Fair Value Of Redeemable Securities ChangesInFairValueOfRedeemableSecurities	7300000	USD
CY2019	hsic	Initial Noncontrolling Interests And Adjustments Related To Business Acquisitions InitialNoncontrollingInterestsAndAdjustmentsRelatedToBusinessAcquisitions	42345000	USD
CY2019	hsic	Adjustment To Stock For Spin Off Transaction Value AdjustmentToStockForSpinOffTransactionValue	1000	USD
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	34000	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	45245000	USD
CY2019	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	10845000	USD
CY2019	hsic	Adjustments To Additional Paid In Capital Share Based Compensation Other Longterm Incentive Plans Settled In Cash AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationOtherLongtermIncentivePlansSettledInCash	-160000	USD
CY2019	hsic	Adjustment To Additional Paid In Capital Sale Of Stock Related To Spin Off Transaction AdjustmentToAdditionalPaidInCapitalSaleOfStockRelatedToSpinOffTransaction	361090000	USD
CY2019	hsic	Deferred Taxes Purchases Of Noncontrolling Interest In Certain Subsidiaries DeferredTaxesPurchasesOfNoncontrollingInterestInCertainSubsidiaries	-523720000	USD
CY2019	hsic	Reclassification Of Additional Paid In Capital To Retained Earnings ReclassificationOfAdditionalPaidInCapitalToRetainedEarnings	0	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3630137000	USD
CY2020	us-gaap	Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	406060000	USD
CY2020	us-gaap	Temporary Equity Foreign Currency Translation Adjustments TemporaryEquityForeignCurrencyTranslationAdjustments	-4279000	USD
CY2020	hsic	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax Excluding Portion Attributable To Redeemable Noncontrolling Interest OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxExcludingPortionAttributableToRedeemableNoncontrollingInterest	67373000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-2768000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-1000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-5000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	676000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-143000	USD
CY2020	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	1086000	USD
CY2020	hsic	Noncontrolling Interest Decrease From Purchase Of Interests NoncontrollingInterestDecreaseFromPurchaseOfInterests	2298000	USD
CY2020	hsic	Changes In Fair Value Of Redeemable Securities ChangesInFairValueOfRedeemableSecurities	-32842000	USD
CY2020	hsic	Adjustment To Stock For Spin Off Transaction Value AdjustmentToStockForSpinOffTransactionValue	2875000	USD
CY2020	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	1200000	shares
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	-4900000	USD
CY2020	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	545864	shares
CY2020	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	8788000	USD
CY2020	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	236752	shares
CY2020	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	14477000	USD
CY2020	hsic	Adjustments To Additional Paid In Capital Share Based Compensation Other Longterm Incentive Plans Settled In Cash AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationOtherLongtermIncentivePlansSettledInCash	275000	USD
CY2020	us-gaap	Stockholders Equity Note Spinoff Transaction StockholdersEquityNoteSpinoffTransaction	1649000	USD
CY2020	hsic	Reclassification Of Additional Paid In Capital To Retained Earnings ReclassificationOfAdditionalPaidInCapitalToRetainedEarnings	0	USD
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	142462571	shares
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3984385000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	419423000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	719138000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	562126000	USD
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	986000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-6323000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	111685000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	418437000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	725461000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	450441000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	184942000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	143630000	USD
CY2020	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	20275000	USD
CY2019	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	0	USD
CY2018	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	0	USD
CY2020	us-gaap	Gain Loss On Sale Of Stock In Subsidiary Or Equity Method Investee GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee	2096000	USD
CY2019	us-gaap	Gain Loss On Sale Of Stock In Subsidiary Or Equity Method Investee GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee	250167000	USD
CY2018	us-gaap	Gain Loss On Sale Of Stock In Subsidiary Or Equity Method Investee GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee	0	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	8788000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	44920000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	32621000	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	35137000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	12612000	USD
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	14384000	USD
CY2020	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-52977000	USD
CY2019	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-4057000	USD
CY2018	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-25388000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	12344000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	17900000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	21037000	USD
CY2020	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	16002000	USD
CY2019	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	71469000	USD
CY2018	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	20386000	USD
CY2020	hsic	Adjustment For Changes In Unrecognized Tax Benefits AdjustmentForChangesInUnrecognizedTaxBenefits	-24881000	USD
CY2019	hsic	Adjustment For Changes In Unrecognized Tax Benefits AdjustmentForChangesInUnrecognizedTaxBenefits	1941000	USD
CY2018	hsic	Adjustment For Changes In Unrecognized Tax Benefits AdjustmentForChangesInUnrecognizedTaxBenefits	-1169000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Transition Tax On Accumulated Foreign Earnings Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017TransitionTaxOnAccumulatedForeignEarningsAmount	0	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Transition Tax On Accumulated Foreign Earnings Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017TransitionTaxOnAccumulatedForeignEarningsAmount	0	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Transition Tax On Accumulated Foreign Earnings Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017TransitionTaxOnAccumulatedForeignEarningsAmount	-10000000	USD
CY2020	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-5012000	USD
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-5684000	USD
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-369000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	189349000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	72689000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	127201000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	31817000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-14702000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	41042000	USD
CY2020	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	6479000	USD
CY2019	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	57291000	USD
CY2018	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	165645000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	224273000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	160851000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	180606000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	593519000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	820478000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	450955000	USD
CY2020	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	5391000	USD
CY2019	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	-166391000	USD
CY2018	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	233751000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	598910000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	654087000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	684706000	USD
CY2020	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	48829000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	76219000	USD
CY2018	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	71283000	USD
CY2020	us-gaap	Payments To Acquire Businesses And Interest In Affiliates PaymentsToAcquireBusinessesAndInterestInAffiliates	60173000	USD
CY2019	us-gaap	Payments To Acquire Businesses And Interest In Affiliates PaymentsToAcquireBusinessesAndInterestInAffiliates	655879000	USD
CY2018	us-gaap	Payments To Acquire Businesses And Interest In Affiliates PaymentsToAcquireBusinessesAndInterestInAffiliates	53240000	USD
CY2020	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	14020000	USD
CY2019	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	307251000	USD
CY2018	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	1000000	USD
CY2020	us-gaap	Proceeds From Payments For Long Term Loans For Related Parties ProceedsFromPaymentsForLongTermLoansForRelatedParties	-1243000	USD
CY2019	us-gaap	Proceeds From Payments For Long Term Loans For Related Parties ProceedsFromPaymentsForLongTermLoansForRelatedParties	16713000	USD
CY2018	us-gaap	Proceeds From Payments For Long Term Loans For Related Parties ProceedsFromPaymentsForLongTermLoansForRelatedParties	-25700000	USD
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	18794000	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	15101000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-115019000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-422309000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-164324000	USD
CY2020	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	0	USD
CY2019	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	-2064000	USD
CY2018	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	-28630000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-115019000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-424373000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-192954000	USD
CY2020	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	45082000	USD
CY2019	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	-927912000	USD
CY2018	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	210741000	USD
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	501421000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	741000	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	115000000	USD
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	611216000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	260944000	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	24735000	USD
CY2020	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	3879000	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	391000	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	501000	USD
CY2020	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	401000	USD
CY2019	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	0	USD
CY2018	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	0	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	34000	USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	3076000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	73789000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	525000000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	200000000	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	14299000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	10814000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	18023000	USD
CY2020	us-gaap	Proceeds From Sale Of Interest In Corporate Unit ProceedsFromSaleOfInterestInCorporateUnit	0	USD
CY2019	us-gaap	Proceeds From Sale Of Interest In Corporate Unit ProceedsFromSaleOfInterestInCorporateUnit	1120000000	USD
CY2018	us-gaap	Proceeds From Sale Of Interest In Corporate Unit ProceedsFromSaleOfInterestInCorporateUnit	0	USD
CY2020	us-gaap	Proceeds From Contributions From Affiliates ProceedsFromContributionsFromAffiliates	0	USD
CY2019	us-gaap	Proceeds From Contributions From Affiliates ProceedsFromContributionsFromAffiliates	361090000	USD
CY2018	us-gaap	Proceeds From Contributions From Affiliates ProceedsFromContributionsFromAffiliates	0	USD
CY2020	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	-7886000	USD
CY2019	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	51498000	USD
CY2018	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	-7351000	USD
CY2020	hsic	Payments To Noncontrolling Interests And Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsToNoncontrollingInterestsAndPaymentsForRepurchaseOfRedeemableNoncontrollingInterest	19538000	USD
CY2019	hsic	Payments To Noncontrolling Interests And Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsToNoncontrollingInterestsAndPaymentsForRepurchaseOfRedeemableNoncontrollingInterest	2358000	USD
CY2018	hsic	Payments To Noncontrolling Interests And Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsToNoncontrollingInterestsAndPaymentsForRepurchaseOfRedeemableNoncontrollingInterest	287635000	USD
CY2020	hsic	Proceeds From Payments To Affiliates ProceedsFromPaymentsToAffiliates	-2711000	USD
CY2019	hsic	Proceeds From Payments To Affiliates ProceedsFromPaymentsToAffiliates	169295000	USD
CY2018	hsic	Proceeds From Payments To Affiliates ProceedsFromPaymentsToAffiliates	192745000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-181794000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-363351000	USD
CY2020	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations	-5391000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-603776000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	14394000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	14425000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Disposal Group Including Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsDisposalGroupIncludingDiscontinuedOperations	0	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Disposal Group Including Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsDisposalGroupIncludingDiscontinuedOperations	-2240000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Disposal Group Including Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsDisposalGroupIncludingDiscontinuedOperations	3150000	USD
CY2020	hsic	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect Contiuning Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffectContiuningOperations	315088000	USD
CY2019	hsic	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect Contiuning Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffectContiuningOperations	49212000	USD
CY2018	hsic	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect Contiuning Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffectContiuningOperations	-101117000	USD
CY2020	hsic	Cashcashequivalentsrestrictedcashandrestrictedcashequivalentsperiodincreasedecreaseincludingexchangerateeffectdisposalgroupanddiscontinuedoperations Cashcashequivalentsrestrictedcashandrestrictedcashequivalentsperiodincreasedecreaseincludingexchangerateeffectdisposalgroupanddiscontinuedoperations	0	USD
CY2019	hsic	Cashcashequivalentsrestrictedcashandrestrictedcashequivalentsperiodincreasedecreaseincludingexchangerateeffectdisposalgroupanddiscontinuedoperations Cashcashequivalentsrestrictedcashandrestrictedcashequivalentsperiodincreasedecreaseincludingexchangerateeffectdisposalgroupanddiscontinuedoperations	-23324000	USD
CY2018	hsic	Cashcashequivalentsrestrictedcashandrestrictedcashequivalentsperiodincreasedecreaseincludingexchangerateeffectdisposalgroupanddiscontinuedoperations Cashcashequivalentsrestrictedcashandrestrictedcashequivalentsperiodincreasedecreaseincludingexchangerateeffectdisposalgroupanddiscontinuedoperations	6668000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	106097000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	56885000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	158002000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	421185000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	106097000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	56885000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.79
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	-4911000	USD
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<div id="TextBlockContainer1788" style="position:relative;font-family:'Times New Roman';font-size:14.72px;color:#000000;line-height:normal;width:696px;height:271px;"><div id="div_1786_XBRL_TS_5577b96075804daabc0856c6210ef2b1" style="position:absolute;left:0px;top:0px;float:left;"><div id="TextBlockContainer1787" style="position:relative;font-family:'Times New Roman';font-size:14.72px;color:#000000;line-height:normal;width:696px;height:271px;"><div id="a40916" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:italic;left:4.907px;top:0px;">Use of Estimates </div><div id="a40920" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:16.8px;"> </div><div id="a40921" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:33.8px;">The preparation of financial statements in conformity with accounting principles<div style="display:inline-block;width:1.91px"> </div>generally accepted in the United </div><div id="a40922" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:50.6px;">States requires us to make estimates and assumptions that affect the reported amounts of<div style="display:inline-block;width:2.29px"> </div>assets and liabilities and </div><div id="a40923" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:67.4px;">disclosure of contingent assets and liabilities at the date of the financial<div style="display:inline-block;width:2.28px"> </div>statements and the reported amounts of </div><div id="a40924" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:84.3px;">revenues and expenses during the reporting period.<div style="display:inline-block;width:6.44px"> </div>Actual results could differ from those estimates. </div><div id="a40926" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:101.1px;"> </div><div id="a40927" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:118.1px;">In March 2020, the World Health Organization declared the Novel Coronavirus Disease 2019 (“COVID-19”) a </div><div id="a40931" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:134.9px;">pandemic. The COVID-19 pandemic has negatively impacted the global<div style="display:inline-block;width:2.33px"> </div>economy, disrupted global supply chains </div><div id="a40934" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:151.7px;">and created significant volatility and disruption of global financial markets.<div style="display:inline-block;width:2.32px"> </div>In response, many countries </div><div id="a40936" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:168.7px;">implemented business closures and restrictions, stay-at-home and social<div style="display:inline-block;width:2.32px"> </div>distancing ordinances and similar measures </div><div id="a40941" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:185.5px;">to combat the pandemic, which significantly impacted global business<div style="display:inline-block;width:2.23px"> </div>and dramatically reduced demand for dental </div><div id="a40942" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:202.4px;">products and certain medical products in the second quarter of 2020.<div style="display:inline-block;width:6.03px"> </div>Demand increased in the second half of the </div><div id="a40944" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:219.2px;">year resulting in growth over the prior year driven by sales of personal<div style="display:inline-block;width:2.3px"> </div>protective equipment (PPE) and COVID-19 </div><div id="a40947" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:236px;">related products. </div><div id="a40949" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:253px;"> </div></div></div></div><div id="TextBlockContainer1792" style="position:relative;font-family:'Times New Roman';font-size:14.72px;color:#000000;line-height:normal;width:696px;height:237px;"><div id="div_1790_XBRL_TS_5577b96075804daabc0856c6210ef2b1_1" style="position:absolute;left:0px;top:0px;float:left;"><div id="TextBlockContainer1791" style="position:relative;font-family:'Times New Roman';font-size:14.72px;color:#000000;line-height:normal;width:696px;height:237px;"><div id="a40988" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:0px;">Our consolidated financial statements reflect estimates and assumptions<div style="display:inline-block;width:2.2px"> </div>made by us that affect, among other things, </div><div id="a40990" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:17px;">our goodwill, long-lived asset and indefinite-lived intangible asset valuation;<div style="display:inline-block;width:2.25px"> </div>inventory valuation; equity investment </div><div id="a40995" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:33.8px;">valuation; assessment of the annual effective tax rate; valuation of deferred income<div style="display:inline-block;width:2.23px"> </div>taxes and income tax </div><div id="a40997" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:50.7px;">contingencies; the allowance for doubtful accounts; hedging activity; vendor<div style="display:inline-block;width:2.17px"> </div>rebates; measurement of </div><div id="a40998" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:67.5px;">compensation cost for certain share-based performance awards and cash bonus<div style="display:inline-block;width:2.27px"> </div>plans; and pension plan </div><div id="a41002" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:84.3px;">assumptions.<div style="display:inline-block;width:7.21px"> </div>Due to the significant uncertainty surrounding the future impact<div style="display:inline-block;width:2.33px"> </div>of COVID-19, our judgments </div><div id="a41005" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:101.3px;">regarding estimates and impairments could change in the future.<div style="display:inline-block;width:6.06px"> </div>In addition, the impact of COVID-19 had a </div><div id="a41008" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:118.1px;">material adverse effect on our business, results of operations and cash flows in the<div style="display:inline-block;width:2.21px"> </div>second quarter of 2020. In the </div><div id="a41010" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:135px;">latter half of the year, dental and medical practices began to re-open worldwide, and continued to do so<div style="display:inline-block;width:2.33px"> </div>during the </div><div id="a41013" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:151.8px;">remainder of the year.<div style="display:inline-block;width:7.82px"> </div>However, patient volumes remain below pre-COVID-19 levels and certain regions in the </div><div id="a41019" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:168.8px;">U.S. and internationally are experiencing an increase in COVID-19<div style="display:inline-block;width:2.33px"> </div>cases.<div style="display:inline-block;width:7.34px"> </div>As such, there is an ongoing risk that the </div><div id="a41022" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:185.6px;">COVID-19 pandemic may again have a material adverse effect on our business, results<div style="display:inline-block;width:2.28px"> </div>of operations and cash </div><div id="a41026" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:202.4px;">flows and may result in a material adverse effect on our financial condition<div style="display:inline-block;width:2.33px"> </div>and liquidity.<div style="display:inline-block;width:8.21px"> </div>However, the extent of </div><div id="a41027" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:219.4px;">the potential impact cannot be reasonably estimated at this time.</div></div></div></div>
CY2020	us-gaap	Fiscal Period FiscalPeriod	<div id="TextBlockContainer1795" style="position:relative;font-family:'Times New Roman';font-size:14.72px;color:#000000;line-height:normal;width:691px;height:67px;"><div id="a41030" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:italic;left:4.907px;top:0px;">Fiscal Year </div><div id="a41032" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:normal;font-style:normal;left:4.907px;top:17px;"> </div><div id="a41033" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:32.2px;">We report our results of operations and cash flows on a </div><div id="a41033_56_2" style="position:absolute;font-family:'Times New Roman';font-size:14.72px;left:332.773px;top:32.2px;">52</div><div id="a41033_58_1" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:347.533px;top:32.2px;">-</div><div id="a41033_59_2" style="position:absolute;font-family:'Times New Roman';font-size:14.72px;left:352.333px;top:32.2px;">53</div><div id="a41033_61_53" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:367.053px;top:32.2px;"><div style="display:inline-block;width:3.71px"> </div>week basis ending on the last Saturday of December. </div><div id="a41042" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:4.907px;top:49px;">The years ended December 26, 2020, December 28, 2019 and December<div style="display:inline-block;width:2.22px"> </div>29, 2018 consisted of </div><div id="a41042_88_2" style="position:absolute;font-family:'Times New Roman';font-size:14.72px;left:564.2px;top:49px;">52</div><div id="a41042_90_7" style="position:absolute;font-family:'Times New Roman';font-weight:normal;font-style:normal;left:578.92px;top:49px;"><div style="display:inline-block;width:3.68px"> </div>weeks.</div></div>
CY2019	us-gaap	Fiscal Period Duration FiscalPeriodDuration	P364D
CY2018	us-gaap	Fiscal Period Duration FiscalPeriodDuration	P364D
CY2020	us-gaap	Fiscal Period Duration FiscalPeriodDuration	P364D
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	70800000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	6200000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	71500000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	8200000	USD
CY2020Q4	us-gaap	Bank Overdrafts BankOverdrafts	1300000	USD
CY2019Q4	us-gaap	Bank Overdrafts BankOverdrafts	29500000	USD
CY2020	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	30800000	USD
CY2019	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	25200000	USD
CY2018	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	12900000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	20300000	USD
CY2020	hsic	Distribution Network Costs DistributionNetworkCosts	71700000	USD
CY2019	hsic	Distribution Network Costs DistributionNetworkCosts	72300000	USD
CY2018	hsic	Distribution Network Costs DistributionNetworkCosts	69600000	USD
CY2020	us-gaap	Lessee Operating Lease Option To Extend LesseeOperatingLeaseOptionToExtend	Our lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option.
CY2018	us-gaap	Depreciation Depreciation	58100000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	868182000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	798591000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	526178000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	468946000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	342004000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	329645000	USD
CY2020	us-gaap	Depreciation Depreciation	64300000	USD
CY2019	us-gaap	Depreciation Depreciation	64400000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	2081029000	USD
CY2019	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	388628000	USD
CY2019	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-7162000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	2462495000	USD
CY2020	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	26331000	USD
CY2020	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	15566000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	2504392000	USD
CY2019Q4	us-gaap	Business Combination Indemnification Assets Amount As Of Acquisition Date BusinessCombinationIndemnificationAssetsAmountAsOfAcquisitionDate	38464000	USD
CY2020Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	20906000	USD
CY2020Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	887384000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	407955000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	479429000	USD
CY2019Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	960945000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	388067000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	572878000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	105900000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	108300000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	75300000	USD
CY2020	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	20300000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	99300000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	85500000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	78000000.0	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	54800000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	43200000	USD
CY2019Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	14648000	USD
CY2020Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	169382000	USD
CY2019Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	164659000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	42594000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	23625000	USD
CY2020Q4	us-gaap	Notes And Loans Receivable Net Noncurrent NotesAndLoansReceivableNetNoncurrent	34760000	USD
CY2019Q4	us-gaap	Notes And Loans Receivable Net Noncurrent NotesAndLoansReceivableNetNoncurrent	43544000	USD
CY2020Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	47650000	USD
CY2019Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	42445000	USD
CY2020Q4	us-gaap	Deposits Assets DepositsAssets	1752000	USD
CY2019Q4	us-gaap	Deposits Assets DepositsAssets	534000	USD
CY2020Q4	us-gaap	Business Combination Indemnification Assets Amount As Of Acquisition Date BusinessCombinationIndemnificationAssetsAmountAsOfAcquisitionDate	49401000	USD
CY2020Q4	us-gaap	Investments And Other Noncurrent Assets InvestmentsAndOtherNoncurrentAssets	366445000	USD
CY2019Q4	us-gaap	Investments And Other Noncurrent Assets InvestmentsAndOtherNoncurrentAssets	327919000	USD
CY2020	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	15300000	USD
CY2019	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	12300000	USD
CY2018	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	10200000	USD
CY2020Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	73366000	USD
CY2019Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	23975000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	5961000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	5394000	USD
CY2020Q4	hsic	Long Term Debt And Finance Lease Liability Including Current Maturities LongTermDebtAndFinanceLeaseLiabilityIncludingCurrentMaturities	625609000	USD
CY2019Q4	hsic	Long Term Debt And Finance Lease Liability Including Current Maturities LongTermDebtAndFinanceLeaseLiabilityIncludingCurrentMaturities	732757000	USD
CY2020Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	109836000	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	109849000	USD
CY2020Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	515773000	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	622908000	USD
CY2020Q4	us-gaap	Deferred Finance Costs Gross DeferredFinanceCostsGross	800000	USD
CY2020Q4	hsic	Long Term Debt And Finance Lease Liability Repayments Of Principal In Next Twelve Months LongTermDebtAndFinanceLeaseLiabilityRepaymentsOfPrincipalInNextTwelveMonths	109836000	USD
CY2020Q4	hsic	Long Term Debt And Finance Lease Liability Maturities Repayments Of Principal In Year Two LongTermDebtAndFinanceLeaseLiabilityMaturitiesRepaymentsOfPrincipalInYearTwo	11607000	USD
CY2020Q4	hsic	Long Term Debt And Finance Lease Liability Maturities Repayments Of Principal In Year Three LongTermDebtAndFinanceLeaseLiabilityMaturitiesRepaymentsOfPrincipalInYearThree	1916000	USD
CY2020Q4	hsic	Long Term Debt And Finance Lease Liability Maturities Repayments Of Principal In Year Four LongTermDebtAndFinanceLeaseLiabilityMaturitiesRepaymentsOfPrincipalInYearFour	100303000	USD
CY2020Q4	hsic	Long Term Debt And Finance Lease Liability Maturities Repayments Of Principal In Year Five LongTermDebtAndFinanceLeaseLiabilityMaturitiesRepaymentsOfPrincipalInYearFive	1839000	USD
CY2020Q4	hsic	Long Term Debt And Finance Lease Liability Maturities Repayments Of Principal After Year Five LongTermDebtAndFinanceLeaseLiabilityMaturitiesRepaymentsOfPrincipalAfterYearFive	400108000	USD
CY2020Q4	hsic	Long Term Debt And Finance Lease Liability Including Current Maturities LongTermDebtAndFinanceLeaseLiabilityIncludingCurrentMaturities	625609000	USD
CY2020	us-gaap	Lessee Operating Lease Description LesseeOperatingLeaseDescription	We have operating and finance leases for corporate offices, office space, distribution and other facilities, vehicles, and certain equipment.
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	86800000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	88246000	USD
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	2209000	USD
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	1154000	USD
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	115000	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	131000	USD
CY2020	hsic	Financeleasecost Financeleasecost	2324000	USD
CY2019	hsic	Financeleasecost Financeleasecost	1285000	USD
CY2019	hsic	Operating Lease Right Of Use Asset Amortization Expense Including Operating Lease Credit OperatingLeaseRightOfUseAssetAmortizationExpenseIncludingOperatingLeaseCredit	600000	USD
CY2020	hsic	Operating Lease Right Of Use Asset Amortization Expense Including Operating Lease Credit OperatingLeaseRightOfUseAssetAmortizationExpenseIncludingOperatingLeaseCredit	600000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	288847000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	231662000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	64716000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	65349000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	238727000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	176267000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	28899000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	327000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	303443000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	241616000	USD
CY2020Q4	hsic	Property Plant And Equipment Gross Finance Lease Right Of Use Asset PropertyPlantAndEquipmentGrossFinanceLeaseRightOfUseAsset	10683000	USD
CY2019Q4	hsic	Property Plant And Equipment Gross Finance Lease Right Of Use Asset PropertyPlantAndEquipmentGrossFinanceLeaseRightOfUseAsset	10268000	USD
CY2020Q4	hsic	Finance Lease Right Of Use Asset Accumulated Depreciation Property Plant And Equipment FinanceLeaseRightOfUseAssetAccumulatedDepreciationPropertyPlantAndEquipment	4277000	USD
CY2019Q4	hsic	Finance Lease Right Of Use Asset Accumulated Depreciation Property Plant And Equipment FinanceLeaseRightOfUseAssetAccumulatedDepreciationPropertyPlantAndEquipment	4581000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	6406000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	5687000	USD
CY2020Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	2420000	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	1736000	USD
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	3541000	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	3658000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	5961000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	5394000	USD
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y6M
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y6M
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P4Y3M18D
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P5Y
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.028	pure
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.034	pure
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.019	pure
CY2019Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.022	pure
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	76985000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	79699000	USD
CY2020	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	101000	USD
CY2019	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	99000	USD
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	2148000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	1413000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	120148000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	297800000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	2947000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	2940000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Rolling Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths	71801000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	2503000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	58049000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	1542000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	40670000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	596000	USD
CY2019Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	287258000	USD
CY2018Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	219724000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	26147000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	305000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	110228000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	920000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	335794000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	6193000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	32351000	USD
CY2020Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	232000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	303443000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	5961000	USD
CY2020Q4	hsic	Operating Lease Assets Lease Not Yet Commenced OperatingLeaseAssetsLeaseNotYetCommenced	13500000	USD
CY2020	us-gaap	Lessee Operating Lease Lease Not Yet Commenced Description LesseeOperatingLeaseLeaseNotYetCommencedDescription	for buildings and vehicles
CY2019Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	287258000	USD
CY2018Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	219724000	USD
CY2017Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	465585000	USD
CY2020	us-gaap	Temporary Equity Elimination As Partof Reorganization TemporaryEquityEliminationAsPartofReorganization	17241000	USD
CY2019	us-gaap	Temporary Equity Elimination As Partof Reorganization TemporaryEquityEliminationAsPartofReorganization	2270000	USD
CY2018	us-gaap	Temporary Equity Elimination As Partof Reorganization TemporaryEquityEliminationAsPartofReorganization	287767000	USD
CY2020	us-gaap	Temporary Equity Stock Issued During Period Value New Issues TemporaryEquityStockIssuedDuringPeriodValueNewIssues	28387000	USD
CY2019	us-gaap	Temporary Equity Stock Issued During Period Value New Issues TemporaryEquityStockIssuedDuringPeriodValueNewIssues	74865000	USD
CY2018	us-gaap	Temporary Equity Stock Issued During Period Value New Issues TemporaryEquityStockIssuedDuringPeriodValueNewIssues	4655000	USD
CY2020	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	13363000	USD
CY2019	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	14838000	USD
CY2018	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	15327000	USD
CY2020	hsic	Redeemable Noncontrolling Decrease From Distributions By Redeemable Noncontrolling Interest RedeemableNoncontrollingDecreaseFromDistributionsByRedeemableNoncontrollingInterest	12631000	USD
CY2019	hsic	Redeemable Noncontrolling Decrease From Distributions By Redeemable Noncontrolling Interest RedeemableNoncontrollingDecreaseFromDistributionsByRedeemableNoncontrollingInterest	10264000	USD
CY2018	hsic	Redeemable Noncontrolling Decrease From Distributions By Redeemable Noncontrolling Interest RedeemableNoncontrollingDecreaseFromDistributionsByRedeemableNoncontrollingInterest	8206000	USD
CY2020	us-gaap	Temporary Equity Foreign Currency Translation Adjustments TemporaryEquityForeignCurrencyTranslationAdjustments	-4279000	USD
CY2019	us-gaap	Temporary Equity Foreign Currency Translation Adjustments TemporaryEquityForeignCurrencyTranslationAdjustments	-2335000	USD
CY2018	us-gaap	Temporary Equity Foreign Currency Translation Adjustments TemporaryEquityForeignCurrencyTranslationAdjustments	-11330000	USD
CY2020	us-gaap	Temporary Equity Accretion To Redemption Value TemporaryEquityAccretionToRedemptionValue	32842000	USD
CY2019	us-gaap	Temporary Equity Accretion To Redemption Value Adjustment TemporaryEquityAccretionToRedemptionValueAdjustment	7300000	USD
CY2018	us-gaap	Temporary Equity Accretion To Redemption Value TemporaryEquityAccretionToRedemptionValue	41460000	USD
CY2020Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	327699000	USD
CY2020Q4	hsic	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Attributable To Redeemable Noncontrolling Interest Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentAttributableToRedeemableNoncontrollingInterestNetOfTax	-24617000	USD
CY2019Q4	hsic	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Attributable To Redeemable Noncontrolling Interest Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentAttributableToRedeemableNoncontrollingInterestNetOfTax	-20338000	USD
CY2018Q4	hsic	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Attributable To Redeemable Noncontrolling Interest Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentAttributableToRedeemableNoncontrollingInterestNetOfTax	-18595000	USD
CY2020Q4	hsic	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Attributable To Nonredeemable Noncontrolling Interests Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentAttributableToNonredeemableNoncontrollingInterestsNetOfTax	235000	USD
CY2018Q4	hsic	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Attributable To Nonredeemable Noncontrolling Interests Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentAttributableToNonredeemableNoncontrollingInterestsNetOfTax	-426000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-76565000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-143172000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-234799000	USD
CY2019Q4	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	-4032000	USD
CY2018Q4	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	-156000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	1000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	6000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-6000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	20032000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	20175000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	13810000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-108084000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-167373000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-248771000	USD
CY2020Q4	hsic	Accumulated Other Comprehensive Income Loss Net Of Tax Including Portion Attributable To Redeemable And Nonredeemable Noncontrolling Interests AccumulatedOtherComprehensiveIncomeLossNetOfTaxIncludingPortionAttributableToRedeemableAndNonredeemableNoncontrollingInterests	-132466000	USD
CY2019Q4	hsic	Accumulated Other Comprehensive Income Loss Net Of Tax Including Portion Attributable To Redeemable And Nonredeemable Noncontrolling Interests AccumulatedOtherComprehensiveIncomeLossNetOfTaxIncludingPortionAttributableToRedeemableAndNonredeemableNoncontrollingInterests	-188242000	USD
CY2018Q4	hsic	Accumulated Other Comprehensive Income Loss Net Of Tax Including Portion Attributable To Redeemable And Nonredeemable Noncontrolling Interests AccumulatedOtherComprehensiveIncomeLossNetOfTaxIncludingPortionAttributableToRedeemableAndNonredeemableNoncontrollingInterests	-267792000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	419423000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	719138000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	562126000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	63094000	USD
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	206796000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	63094000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-4070000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-136356000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	-10224000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-2768000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-136356000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-1035000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	396000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-7456000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-3876000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	626000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-6000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	14000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-3000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-1000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-5000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	12000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-3000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	533000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	7730000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-4212000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	676000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	1806000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-1179000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-143000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	5924000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-3033000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	475199000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	705280000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	429426000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	463083000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	682724000	USD
CY2019	hsic	Comprehensive Income Attributable To Noncontrolling Interests Excluding Comprehensive Income Attributable To Redeemable Noncontrolling Interests ComprehensiveIncomeAttributableToNoncontrollingInterestsExcludingComprehensiveIncomeAttributableToRedeemableNoncontrollingInterests	9827000	USD
CY2018	hsic	Comprehensive Income Attributable To Noncontrolling Interests Excluding Comprehensive Income Attributable To Redeemable Noncontrolling Interests ComprehensiveIncomeAttributableToNoncontrollingInterestsExcludingComprehensiveIncomeAttributableToRedeemableNoncontrollingInterests	3432000	USD
CY2020	hsic	Comprehensive Income Net Of Tax Attributable To Redeemable Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToRedeemableNoncontrollingInterest	9084000	USD
CY2019	hsic	Comprehensive Income Net Of Tax Attributable To Redeemable Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToRedeemableNoncontrollingInterest	12729000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	475199000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	705280000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	429426000	USD
CY2018	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	54400000	USD
CY2020Q4	us-gaap	Business Acquisition Cost Of Acquired Entity Transaction Costs BusinessAcquisitionCostOfAcquiredEntityTransactionCosts	5900000	USD
CY2019Q4	us-gaap	Business Acquisition Cost Of Acquired Entity Transaction Costs BusinessAcquisitionCostOfAcquiredEntityTransactionCosts	4500000	USD
CY2018Q4	us-gaap	Business Acquisition Cost Of Acquired Entity Transaction Costs BusinessAcquisitionCostOfAcquiredEntityTransactionCosts	7300000	USD
CY2020	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	32100000	USD
CY2019	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	14700000	USD
CY2017Q4	us-gaap	Restructuring Reserve RestructuringReserve	4426000	USD
CY2018	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	54367000	USD
CY2018	hsic	Payments For Restructuring And Restructuring Reserve Accrual Adjustment PaymentsForRestructuringAndRestructuringReserveAccrualAdjustment	27068000	USD
CY2019	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	14705000	USD
CY2019	hsic	Payments For Restructuring And Restructuring Reserve Accrual Adjustment PaymentsForRestructuringAndRestructuringReserveAccrualAdjustment	32620000	USD
CY2019Q4	us-gaap	Restructuring Reserve RestructuringReserve	13810000	USD
CY2020	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	32093000	USD
CY2020	hsic	Payments For Restructuring And Restructuring Reserve Accrual Adjustment PaymentsForRestructuringAndRestructuringReserveAccrualAdjustment	32790000	USD
CY2020Q4	us-gaap	Restructuring Reserve RestructuringReserve	13113000	USD
CY2017Q4	us-gaap	Restructuring Reserve RestructuringReserve	4426000	USD
CY2018	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	54367000	USD
CY2018	hsic	Payments For Restructuring And Restructuring Reserve Accrual Adjustment PaymentsForRestructuringAndRestructuringReserveAccrualAdjustment	27068000	USD
CY2018Q4	us-gaap	Restructuring Reserve RestructuringReserve	31725000	USD
CY2019	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	14705000	USD
CY2019	hsic	Payments For Restructuring And Restructuring Reserve Accrual Adjustment PaymentsForRestructuringAndRestructuringReserveAccrualAdjustment	32620000	USD
CY2019Q4	us-gaap	Restructuring Reserve RestructuringReserve	13810000	USD
CY2020	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	32093000	USD
CY2020	hsic	Payments For Restructuring And Restructuring Reserve Accrual Adjustment PaymentsForRestructuringAndRestructuringReserveAccrualAdjustment	32790000	USD
CY2020Q4	us-gaap	Restructuring Reserve RestructuringReserve	13113000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	71854000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	24640000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	28150000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	22533000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	40799000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	42004000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	38433000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	148351000	USD
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	142504000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	147817000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	152656000	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	900000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1440000	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1051000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	143404000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	149257000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	153707000	shares
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	430838000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	507003000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	405289000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	69057000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	173304000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	131547000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	499895000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	680307000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	82912000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	93418000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	163572000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	132820000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-18032000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	5633000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	43663000	USD
CY2020Q4	hsic	Deferred Tax Assets Noncurrent Tax Deferred Expense Reserves And Accruals Reserves DeferredTaxAssetsNoncurrentTaxDeferredExpenseReservesAndAccrualsReserves	56668000	USD
CY2019Q4	hsic	Deferred Tax Assets Noncurrent Tax Deferred Expense Reserves And Accruals Reserves DeferredTaxAssetsNoncurrentTaxDeferredExpenseReservesAndAccrualsReserves	23808000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	4858000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	14075000	USD
CY2020Q4	hsic	Deferred Tax Assets Noncurrent Inventory DeferredTaxAssetsNoncurrentInventory	6895000	USD
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-30056000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-11287000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-23972000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-52977000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-4057000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-25388000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	95374000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	159515000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	107432000	USD
CY2020Q4	hsic	Deferred Tax Liabilities Investments Subsidiaries DeferredTaxLiabilitiesInvestmentsSubsidiaries	6294000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Investment In Subsidiaries DeferredTaxAssetsInvestmentInSubsidiaries	1420000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	64297000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	206000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-4889000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	1597000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1622000	USD
CY2019Q4	hsic	Deferred Tax Assets Noncurrent Inventory DeferredTaxAssetsNoncurrentInventory	7259000	USD
CY2020Q4	hsic	Deferred Tax Assets Property Operating Lease Right Of Use Asset DeferredTaxAssetsPropertyOperatingLeaseRightOfUseAsset	74674000	USD
CY2019Q4	hsic	Deferred Tax Assets Property Operating Lease Right Of Use Asset DeferredTaxAssetsPropertyOperatingLeaseRightOfUseAsset	56780000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	49260000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	33311000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	250358000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	180316000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	40496000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	20699000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	209862000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	159617000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	118165000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	135754000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	71343000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	54672000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	7820000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	10555000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	197328000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	200981000	USD
CY2020Q4	hsic	Deferred Tax Assets Or Liabilities DeferredTaxAssetsOrLiabilities	-12534000	USD
CY2019Q4	hsic	Deferred Tax Assets Or Liabilities DeferredTaxAssetsOrLiabilities	41364000	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	104977000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	142865000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	112735000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	13015000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	16539000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	15872000	USD
CY2020	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-428000	USD
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-4580000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-86000	USD
CY2018	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-2558000	USD
CY2020	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	2681000	USD
CY2019	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	3931000	USD
CY2018	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	2700000	USD
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	659000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-79000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	2017000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	3671000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	2126000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	778000	USD
CY2020	hsic	Income Tax Reconciliation Interest Expense Related To Loans IncomeTaxReconciliationInterestExpenseRelatedToLoans	-11098000	USD
CY2019	hsic	Income Tax Reconciliation Interest Expense Related To Loans IncomeTaxReconciliationInterestExpenseRelatedToLoans	-5498000	USD
CY2018	hsic	Income Tax Reconciliation Interest Expense Related To Loans IncomeTaxReconciliationInterestExpenseRelatedToLoans	-11700000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	159515000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	107432000	USD
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.191	pure
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.234	pure
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-1008000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Transition Tax On Accumulated Foreign Earnings Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017TransitionTaxOnAccumulatedForeignEarningsAmount	0	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Transition Tax On Accumulated Foreign Earnings Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017TransitionTaxOnAccumulatedForeignEarningsAmount	0	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Transition Tax On Accumulated Foreign Earnings Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017TransitionTaxOnAccumulatedForeignEarningsAmount	-10000000	USD
CY2020	hsic	Tax Cuts And Jobs Act Change In Tax Rate Income Tax Expense Benefit TaxCutsAndJobsActChangeInTaxRateIncomeTaxExpenseBenefit	0	USD
CY2019	hsic	Tax Cuts And Jobs Act Change In Tax Rate Income Tax Expense Benefit TaxCutsAndJobsActChangeInTaxRateIncomeTaxExpenseBenefit	0	USD
CY2018	hsic	Tax Cuts And Jobs Act Change In Tax Rate Income Tax Expense Benefit TaxCutsAndJobsActChangeInTaxRateIncomeTaxExpenseBenefit	-1676000	USD
CY2020	hsic	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Global Intangible Low Taxed Income Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActGlobalIntangibleLowTaxedIncomeAmount	2365000	USD
CY2019	hsic	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Global Intangible Low Taxed Income Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActGlobalIntangibleLowTaxedIncomeAmount	3917000	USD
CY2018	hsic	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Global Intangible Low Taxed Income Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActGlobalIntangibleLowTaxedIncomeAmount	7599000	USD
CY2020	us-gaap	Income Tax Reconciliation Deductions Extraterritorial Income Exclusion IncomeTaxReconciliationDeductionsExtraterritorialIncomeExclusion	5823000	USD
CY2019	us-gaap	Income Tax Reconciliation Deductions Extraterritorial Income Exclusion IncomeTaxReconciliationDeductionsExtraterritorialIncomeExclusion	0	USD
CY2018	us-gaap	Income Tax Reconciliation Deductions Extraterritorial Income Exclusion IncomeTaxReconciliationDeductionsExtraterritorialIncomeExclusion	13852000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Restructuring Charges IncomeTaxReconciliationNondeductibleExpenseRestructuringCharges	0	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Restructuring Charges IncomeTaxReconciliationNondeductibleExpenseRestructuringCharges	0	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Restructuring Charges IncomeTaxReconciliationNondeductibleExpenseRestructuringCharges	3914000	USD
CY2020	us-gaap	Income Tax Reconciliation Disposition Of Business IncomeTaxReconciliationDispositionOfBusiness	0	USD
CY2019	us-gaap	Income Tax Reconciliation Disposition Of Business IncomeTaxReconciliationDispositionOfBusiness	-1333000	USD
CY2018	us-gaap	Income Tax Reconciliation Disposition Of Business IncomeTaxReconciliationDispositionOfBusiness	3135000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	11332000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	8030000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	3528000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	95374000	USD
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.234	pure
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.200	pure
CY2020	hsic	Effective Income Tax Rate Reconciliation Interest Deduction From Adjustable Taxable Income Before Modification Percent EffectiveIncomeTaxRateReconciliationInterestDeductionFromAdjustableTaxableIncomeBeforeModificationPercent	0.30	pure
CY2020	hsic	Effective Income Tax Rate Reconciliation Interest Deduction From Adjustable Taxable Income After Modification Percent EffectiveIncomeTaxRateReconciliationInterestDeductionFromAdjustableTaxableIncomeAfterModificationPercent	0.50	pure
CY2017Q4	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35	pure
CY2017Q4	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	0.21	pure
CY2017Q4	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Transition Tax On Accumulated Foreign Earnings Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017TransitionTaxOnAccumulatedForeignEarningsAmount	140000000.0	USD
CY2017Q4	hsic	Tax Cuts And Jobs Act Change In Tax Rate Income Tax Expense Benefit TaxCutsAndJobsActChangeInTaxRateIncomeTaxExpenseBenefit	3000000.0	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Transition Tax On Accumulated Foreign Earnings Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017TransitionTaxOnAccumulatedForeignEarningsAmount	-10000000.0	USD
CY2018	hsic	Tax Cuts And Jobs Act Change In Tax Rate Income Tax Expense Benefit TaxCutsAndJobsActChangeInTaxRateIncomeTaxExpenseBenefit	-1700000	USD
CY2020	hsic	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Global Intangible Low Taxed Income Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActGlobalIntangibleLowTaxedIncomeAmount	2400000	USD
CY2019	hsic	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Global Intangible Low Taxed Income Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActGlobalIntangibleLowTaxedIncomeAmount	3900000	USD
CY2018	hsic	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Global Intangible Low Taxed Income Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActGlobalIntangibleLowTaxedIncomeAmount	7600000	USD
CY2020	hsic	Unrecognized Tax Benefits Including Accrued Interest UnrecognizedTaxBenefitsIncludingAccruedInterest	84000000.0	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	70100000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	14000000.0	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	18000000.0	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued	0	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued	0	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	1600000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	14300000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	3700000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	16600000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	17300000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	9400000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	1000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	1000000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	1600000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	18600000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	4200000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	91100000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	77800000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	83200000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	4900000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	4900000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	5000000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	7900000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	91100000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	77800000	USD
CY2020	us-gaap	Maximum Length Of Time Foreign Currency Cash Flow Hedge MaximumLengthOfTimeForeignCurrencyCashFlowHedge	P18M
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	10119141000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	9985803000	USD
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2
CY2020Q4	us-gaap	Number Of Countries In Which Entity Operates NumberOfCountriesInWhichEntityOperates	31
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	10119141000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	9985803000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	9417603000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	535303000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	718261000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	600619000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	499895000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	680307000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	185538000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	184942000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	143630000	USD
CY2020	us-gaap	Investment Income Interest InvestmentIncomeInterest	9842000	USD
CY2019	us-gaap	Investment Income Interest InvestmentIncomeInterest	15757000	USD
CY2018	us-gaap	Investment Income Interest InvestmentIncomeInterest	15491000	USD
CY2020	us-gaap	Interest Expense InterestExpense	41377000	USD
CY2019	us-gaap	Interest Expense InterestExpense	50792000	USD
CY2018	us-gaap	Interest Expense InterestExpense	76016000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	95374000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	159515000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	107432000	USD
CY2020	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	48829000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	76219000	USD
CY2018	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	71283000	USD
CY2020Q4	us-gaap	Assets Assets	7772532000	USD
CY2019Q4	us-gaap	Assets Assets	7151101000	USD
CY2018Q4	us-gaap	Assets Assets	8500527000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	10119141000	USD
CY2020Q4	us-gaap	Noncurrent Assets NoncurrentAssets	3614672000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	9985803000	USD
CY2019Q4	us-gaap	Noncurrent Assets NoncurrentAssets	3596680000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	9417603000	USD
CY2018Q4	us-gaap	Noncurrent Assets NoncurrentAssets	2771281000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	8800000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	7100000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	44900000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	34400000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	32600000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	25300000	USD
CY2020	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	0	USD
CY2019	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	0	USD
CY2018	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	0	USD
CY2020Q4	us-gaap	Deferred Compensation Arrangement With Individual Fair Value Of Shares Issued DeferredCompensationArrangementWithIndividualFairValueOfSharesIssued	800000	USD
CY2020	hsic	Share Based Compensation Arrangement By Share Based Payment Award Options And Other Equity Instruments Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndOtherEquityInstrumentsGrantsInPeriodWeightedAverageGrantDateFairValue	60.23
CY2019	hsic	Share Based Compensation Arrangement By Share Based Payment Award Options And Other Equity Instruments Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndOtherEquityInstrumentsGrantsInPeriodWeightedAverageGrantDateFairValue	56.83
CY2018	hsic	Share Based Compensation Arrangement By Share Based Payment Award Options And Other Equity Instruments Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndOtherEquityInstrumentsGrantsInPeriodWeightedAverageGrantDateFairValue	71.38
CY2020Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	42200000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y3M18D
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	3100000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	0	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	0	USD
CY2020Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On First Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary	208200000	USD
CY2020Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Second Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary	110800000	USD
CY2020Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Third Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary	0	USD
CY2020Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Fourth Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary	0	USD
CY2020Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Fifth Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary	0	USD
CY2020Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Due After Five Years UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears	0	USD
CY2020Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance Sheet Amount UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount	319000000	USD
CY2020	us-gaap	Loss Contingency Managements Assessment And Process LossContingencyManagementsAssessmentAndProcess	As of December 26, 2020, 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.
CY2020Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2428871000	USD
CY2020Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1684399000	USD
CY2020Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2840146000	USD
CY2020Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3165725000	USD
CY2020Q1	us-gaap	Gross Profit GrossProfit	746039000	USD
CY2020Q2	us-gaap	Gross Profit GrossProfit	454294000	USD
CY2020Q4	us-gaap	Gross Profit GrossProfit	859711000	USD
CY2020Q1	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	4787000	USD
CY2020Q2	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	15934000	USD
CY2020Q3	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	6992000	USD
CY2020Q4	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	4380000	USD
CY2020Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	173865000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	141726000	USD
CY2020Q4	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	141921000	USD
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.91
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.08
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.00
CY2020Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.00
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.91
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.08
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.99
CY2020Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.99
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2360268000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2447827000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2508767000	USD
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.78
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.78
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.25
CY2020Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	187671000	USD
CY2020Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	181200000	USD
CY2020Q1	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	0	USD
CY2020Q2	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	0	USD
CY2020Q3	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	0	USD
CY2020Q4	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	1572000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	133847000	USD
CY2020Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-13852000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	151813000	USD
CY2020Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	146629000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	130543000	USD
CY2020Q2	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-11382000	USD
CY2019Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2668941000	USD
CY2019Q1	us-gaap	Gross Profit GrossProfit	751690000	USD
CY2019Q2	us-gaap	Gross Profit GrossProfit	767431000	USD
CY2019Q3	us-gaap	Gross Profit GrossProfit	761167000	USD
CY2019Q4	us-gaap	Gross Profit GrossProfit	810598000	USD
CY2019Q1	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	4641000	USD
CY2019Q2	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	11925000	USD
CY2019Q3	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	-802000	USD
CY2019Q4	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	-1059000	USD
CY2019Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	172441000	USD
CY2019Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	162288000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	187198000	USD
CY2019Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	196334000	USD
CY2019Q1	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	0	USD
CY2019Q2	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	0	USD
CY2019Q3	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	0	USD
CY2019Q4	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	186769000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	123640000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	121417000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	143212000	USD
CY2019Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	337192000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	118413000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	116753000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	134916000	USD
CY2019Q4	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	330609000	USD
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.79
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.92
CY2019Q4	us-gaap	Due To Related Parties Current And Noncurrent DueToRelatedPartiesCurrentAndNoncurrent	4900000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	43123000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	54685000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	69371000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	177277000	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	236479000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	-10200000	USD
CY2020Q4	us-gaap	Due From Related Parties DueFromRelatedParties	36400000	USD
CY2019Q4	us-gaap	Due From Related Parties DueFromRelatedParties	31000000.0	USD
CY2020Q4	us-gaap	Due To Related Parties Current And Noncurrent DueToRelatedPartiesCurrentAndNoncurrent	8600000	USD

Files In Submission

Name	View Source	Status
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0001000228-21-000019-index.html	Edgar Link	pending
0001000228-21-000019.txt	Edgar Link	pending
0001000228-21-000019-xbrl.zip	Edgar Link	pending
exhibit211.htm	Edgar Link	pending
exhibit231.htm	Edgar Link	pending
exhibit311.htm	Edgar Link	pending
exhibit312.htm	Edgar Link	pending
exhibit321.htm	Edgar Link	pending
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$HSIC
HENRY SCHEIN INC Stock $hsic

2020 Q4 Form 10-K Financial Statement

#000100022821000019 Filed on February 17, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HSIC HENRY SCHEIN INC Stock $hsic

2020 Q4 Form 10-K Financial Statement

#000100022821000019 Filed on February 17, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HSIC
HENRY SCHEIN INC Stock $hsic