$HOLX
HOLOGIC INC Stock $holx

$holx Overview Financials Valuation SEC Filings Company Website

2019 Form 10-K Financial Statement

#000085973719000026 Filed on November 27, 2019

Income Statement

Concept	2019	2018 Q3	2018 Q2
Revenue	$3.367B	$813.5M	$824.0M
YoY Change	4.64%	101587.5%	117614.29%
Cost Of Revenue	$1.618B	$392.4M	$226.1M
YoY Change	413.23%	476.21%	271.26%
Gross Profit	$1.171B	$421.1M	$436.0M
YoY Change	-30.99%	105175.0%	108900.0%
Gross Profit Margin	34.77%	51.76%	52.91%
Selling, General & Admin	$897.2M	$251.6M	$227.4M
YoY Change	-1.48%	19.3%	2.99%
% of Gross Profit	76.62%	59.75%	52.16%
Research & Development	$232.2M	$52.70M	$54.40M
YoY Change	6.17%	-15.68%	-1.81%
% of Gross Profit	19.83%	12.51%	12.48%
Depreciation & Amortization	$92.50M	$119.1M	$120.5M
YoY Change	-8.96%	0.68%	26.71%
% of Gross Profit	7.9%	28.28%	27.64%
Operating Expenses	$1.295B	$319.2M	$302.9M
YoY Change	-33.08%	8.35%	-149.57%
Operating Profit	-$123.8M	$101.9M	$133.1M
YoY Change	-47.96%	-11.39%	-86.69%
Interest Expense	$140.8M	-$32.40M	$34.50M
YoY Change	-5.31%	-182.86%	-8.0%
% of Operating Profit		-31.8%	25.92%
Other Income/Expense, Net	$3.100M	$4.700M	$5.200M
YoY Change	-59.21%	4600.0%	52.94%
Pretax Income	-$257.7M	$71.30M	$105.3M
YoY Change	-55.71%	-93.55%	-89.12%
Income Tax	-$54.10M	$12.50M	-$7.600M
% Of Pretax Income		17.53%	-7.22%
Net Earnings	-$203.6M	$50.50M	$112.9M
YoY Change	82.93%	50400.0%	22480.0%
Net Earnings / Revenue	-6.05%	6.21%	13.7%
Basic Earnings Per Share	-$0.76		$0.41
Diluted Earnings Per Share	-$0.76	$0.18	$0.41
COMMON SHARES
Basic Shares Outstanding	269.4M shares	272.1M shares	273.7M shares
Diluted Shares Outstanding	269.4M shares		275.6M shares

Balance Sheet

Concept	2019	2018 Q3	2018 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$602.0M	$667.0M	$575.0M
YoY Change	-9.75%	6.98%	-52.77%
Cash & Equivalents	$602.0M	$666.7M	$575.4M
Short-Term Investments
Other Short-Term Assets	$98.00M	$93.00M	$98.00M
YoY Change	5.38%	30.99%	38.03%
Inventory	$445.0M	$384.1M	$370.5M
Prepaid Expenses		$61.50M	$53.60M
Receivables	$649.0M	$579.2M	$551.7M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$1.793B	$1.723B	$1.595B
YoY Change	4.06%	16.54%	-22.24%
LONG-TERM ASSETS
Property, Plant & Equipment	$471.0M	$478.2M	$461.5M
YoY Change	-1.46%	1.14%	-4.39%
Goodwill		$2.533B	$2.493B
YoY Change		-20.12%	-20.98%
Intangibles		$2.399B	$2.449B
YoY Change		-13.48%	-16.24%
Long-Term Investments
YoY Change
Other Assets	$155.0M	$97.70M	$92.10M
YoY Change	58.16%	15.35%	-0.86%
Total Long-Term Assets	$4.649B	$5.508B	$5.496B
YoY Change	-15.6%	-15.28%	-17.41%
TOTAL ASSETS
Total Short-Term Assets	$1.793B	$1.723B	$1.595B
Total Long-Term Assets	$4.649B	$5.508B	$5.496B
Total Assets	$6.442B	$7.231B	$7.091B
YoY Change	-10.91%	-9.38%	-18.55%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$187.0M	$192.2M	$167.3M
YoY Change	-2.6%	15.37%	-5.53%
Accrued Expenses	$375.0M	$436.1M	$364.9M
YoY Change	-1.06%	16.2%	-63.11%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$273.0M	$599.7M	$525.2M
YoY Change	-54.58%	-47.89%	-49.95%
Total Short-Term Liabilities	$1.070B	$1.403B	$1.235B
YoY Change	-23.73%	-24.81%	-48.0%
LONG-TERM LIABILITIES
Long-Term Debt	$2.803B	$2.705B	$2.722B
YoY Change	2.82%	24.52%	21.85%
Other Long-Term Liabilities	$178.0M	$157.6M	$149.6M
YoY Change	1.14%	12.41%	-2.48%
Total Long-Term Liabilities	$2.981B	$2.862B	$2.872B
YoY Change	2.72%	23.78%	20.29%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.070B	$1.403B	$1.235B
Total Long-Term Liabilities	$2.981B	$2.862B	$2.872B
Total Liabilities	$4.326B	$4.265B	$4.107B
YoY Change	-9.91%	2.08%	-13.77%
SHAREHOLDERS EQUITY
Retained Earnings		-$2.494B	-$2.545B
YoY Change		4.67%	0.78%
Common Stock		$2.900M	$2.900M
YoY Change		0.0%	0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)		$725.9M	$637.4M
YoY Change		61.28%	154.96%
Treasury Stock Shares		19.81M shares	17.54M shares
Shareholders Equity	$2.116B	$2.429B	$2.450B
YoY Change
Total Liabilities & Shareholders Equity	$6.442B	$7.231B	$7.091B
YoY Change	-10.91%	-9.38%	-18.55%

Cashflow Statement

Concept	2019	2018 Q3	2018 Q2
OPERATING ACTIVITIES
Net Income	-$203.6M	$50.50M	$112.9M
YoY Change	82.93%	50400.0%	22480.0%
Depreciation, Depletion And Amortization	$92.50M	$119.1M	$120.5M
YoY Change	-8.96%	0.68%	26.71%
Cash From Operating Activities	$649.5M	$232.4M	$234.0M
YoY Change	-11.38%	-156.45%	179.24%
INVESTING ACTIVITIES
Capital Expenditures	$57.00M	-$32.10M	-$24.70M
YoY Change	-2.4%	32.64%	-1.59%
Acquisitions	$110.6M
YoY Change	44.58%
Other Investing Activities	-$167.1M	-$75.40M	-$1.700M
YoY Change	86.5%	1156.67%	-100.36%
Cash From Investing Activities	-$280.7M	-$107.5M	-$26.40M
YoY Change	43.8%	255.96%	-105.88%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$200.1M
YoY Change	-27.45%
Debt Paid & Issued, Net	$1.463B
YoY Change	7.58%
Cash From Financing Activities	-$431.5M	-27.90M	-241.5M
YoY Change	6.6%	-75.33%	435.48%
NET CHANGE
Cash From Operating Activities	$649.5M	232.4M	234.0M
Cash From Investing Activities	-$280.7M	-107.5M	-26.40M
Cash From Financing Activities	-$431.5M	-27.90M	-241.5M
Net Change In Cash	-$64.90M	97.00M	-33.90M
YoY Change	-151.47%	-117.48%	-106.95%
FREE CASH FLOW
Cash From Operating Activities	$649.5M	$232.4M	$234.0M
Capital Expenditures	$57.00M	-$32.10M	-$24.70M
Free Cash Flow	$592.5M	$264.5M	$258.7M
YoY Change	-12.16%	-168.26%	137.56%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2019	dei	Amendment Flag AmendmentFlag	false
CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--09-28
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0000859737
CY2018Q3	holx	Number Of Customers With Balance Greater Than Specified Percentage NumberOfCustomersWithBalanceGreaterThanSpecifiedPercentage	0	Customer
CY2013Q4	holx	Percentage Of Award Vested Upon Meeting Defined Market Based Criteria PercentageOfAwardVestedUponMeetingDefinedMarketBasedCriteria	0.3333
CY2018Q3	holx	Projected Benefit Obligation For Long Term Service Awards ProjectedBenefitObligationForLongTermServiceAwards	100000	USD
CY2019	holx	Sharebased Compensation Arrangementby Sharebased Payment Award Cliff Vesting Periodfrom Grant Date SharebasedCompensationArrangementbySharebasedPaymentAwardCliffVestingPeriodfromGrantDate	P3Y
CY2017	holx	Taxpaidoninterestrateswaps Taxpaidoninterestrateswaps	0	USD
CY2018	holx	Taxpaidoninterestrateswaps Taxpaidoninterestrateswaps	0	USD
CY2019	holx	Taxpaidoninterestrateswaps Taxpaidoninterestrateswaps	1200000	USD
CY2019	holx	Warranty Term For Products WarrantyTermForProducts	P1Y
CY2018Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	16200000	USD
CY2019Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	17800000	USD
CY2018Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2019Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2018Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	750000000	shares
CY2019Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	750000000	shares
CY2018Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	289900000	shares
CY2019Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	292323000	shares
CY2017Q3	us-gaap	Costmethod Investments Other Than Temporary Impairment CostmethodInvestmentsOtherThanTemporaryImpairment	0	USD
CY2017	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	100000	USD
CY2018	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	200000	USD
CY2019	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	0	USD
CY2017	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	1100000	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	-600000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	300000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	600000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	-5000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	1100000	USD
CY2018Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2019Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	319400000	USD
CY2018Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1623000	shares
CY2019Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1623000	shares
CY2018Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2019Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2019Q3	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P1Y
CY2019Q3	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P1Y
CY2019Q3	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P1Y
CY2019Q3	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P1Y
CY2019Q3	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	P3Y
CY2018Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	19812000	shares
CY2019Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	24639000	shares
CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-09-28
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity File Number EntityFileNumber	1-36214
CY2019	dei	Entity Registrant Name EntityRegistrantName	HOLOGIC, INC
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	04-2902449
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	250 Campus Drive
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Marlborough
CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	MA
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	01752
CY2019	dei	City Area Code CityAreaCode	508
CY2019	dei	Local Phone Number LocalPhoneNumber	263-2900
CY2019	dei	Security12b Title Security12bTitle	Common Stock, $.01 par value
CY2019	dei	Trading Symbol TradingSymbol	HOLX
CY2019	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2019	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2019	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2019	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2019	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2019	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2019	dei	Entity Small Business EntitySmallBusiness	false
CY2019	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2019	dei	Entity Shell Company EntityShellCompany	false
CY2019Q1	dei	Entity Public Float EntityPublicFloat	12895201013	USD
CY2019Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	268145411	shares
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	3367300000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	3217900000	USD
CY2017	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	3058800000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	318500000	USD
CY2018	holx	Cost Of Goods Sold Impairment Of Intangible Assets CostOfGoodsSoldImpairmentOfIntangibleAssets	0	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	297100000	USD
CY2019	holx	Cost Of Goods Sold Impairment Of Intangible Assets CostOfGoodsSoldImpairmentOfIntangibleAssets	578700000	USD
CY2017	holx	Cost Of Goods Sold Impairment Of Intangible Assets CostOfGoodsSoldImpairmentOfIntangibleAssets	0	USD
CY2019	us-gaap	Gross Profit GrossProfit	1170900000	USD
CY2018	us-gaap	Gross Profit GrossProfit	1696700000	USD
CY2017	us-gaap	Gross Profit GrossProfit	1621000000.0	USD
CY2019	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	232200000	USD
CY2018	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	218700000	USD
CY2017	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	232800000	USD
CY2019	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	564900000	USD
CY2018	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	544600000	USD
CY2017	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	498600000	USD
CY2019	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	332300000	USD
CY2018	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	366100000	USD
CY2017	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	343300000	USD
CY2019	us-gaap	Cost Of Goods And Services Sold Amortization CostOfGoodsAndServicesSoldAmortization	52000000.0	USD
CY2018	us-gaap	Cost Of Goods And Services Sold Amortization CostOfGoodsAndServicesSoldAmortization	59300000	USD
CY2017	us-gaap	Cost Of Goods And Services Sold Amortization CostOfGoodsAndServicesSoldAmortization	62500000	USD
CY2019	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	106700000	USD
CY2018	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	46000000.0	USD
CY2017	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	0	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	685700000	USD
CY2017	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2019	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	USD
CY2018	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	USD
CY2017	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	899700000	USD
CY2019	us-gaap	Restructuring Charges RestructuringCharges	6600000	USD
CY2018	us-gaap	Restructuring Charges RestructuringCharges	14200000	USD
CY2017	us-gaap	Restructuring Charges RestructuringCharges	13300000	USD
CY2019	us-gaap	Operating Expenses OperatingExpenses	1294700000	USD
CY2018	us-gaap	Operating Expenses OperatingExpenses	1934600000	USD
CY2017	us-gaap	Operating Expenses OperatingExpenses	250800000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	-123800000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	-237900000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	1370200000	USD
CY2019	us-gaap	Investment Income Interest InvestmentIncomeInterest	4600000	USD
CY2018	us-gaap	Investment Income Interest InvestmentIncomeInterest	6300000	USD
CY2017	us-gaap	Investment Income Interest InvestmentIncomeInterest	3800000	USD
CY2019	us-gaap	Interest Expense InterestExpense	140800000	USD
CY2018	us-gaap	Interest Expense InterestExpense	148700000	USD
CY2017	us-gaap	Interest Expense InterestExpense	153200000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-800000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-45900000	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-3200000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	3100000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	7600000	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	12900000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-257700000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-418600000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1230500000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-54100000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-307300000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	475000000.0	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-203600000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-111300000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	755500000	USD
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.76
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.40
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.70
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.76
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.40
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.64
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	269413000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	275105000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	279811000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	269413000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	275105000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	285653000	shares
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-203600000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-111300000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	755500000	USD
CY2019	holx	Other Comprehensive Income Loss Foreign Currency Translationadjustmentnettaxexcludingamountsreclassifiedfrom Aoci OtherComprehensiveIncomeLossForeignCurrencyTranslationadjustmentnettaxexcludingamountsreclassifiedfromAOCI	-14800000	USD
CY2018	holx	Other Comprehensive Income Loss Foreign Currency Translationadjustmentnettaxexcludingamountsreclassifiedfrom Aoci OtherComprehensiveIncomeLossForeignCurrencyTranslationadjustmentnettaxexcludingamountsreclassifiedfromAOCI	-8100000	USD
CY2017	holx	Other Comprehensive Income Loss Foreign Currency Translationadjustmentnettaxexcludingamountsreclassifiedfrom Aoci OtherComprehensiveIncomeLossForeignCurrencyTranslationadjustmentnettaxexcludingamountsreclassifiedfromAOCI	7600000	USD
CY2019	holx	Other Comprehensive Income Lossavailableforsalesecuritiesadjustmentsincludingamountsreclassifiedfrom Aoci OtherComprehensiveIncomeLossavailableforsalesecuritiesadjustmentsincludingamountsreclassifiedfromAOCI	0	USD
CY2018	holx	Other Comprehensive Income Lossavailableforsalesecuritiesadjustmentsincludingamountsreclassifiedfrom Aoci OtherComprehensiveIncomeLossavailableforsalesecuritiesadjustmentsincludingamountsreclassifiedfromAOCI	0	USD
CY2017	holx	Other Comprehensive Income Lossavailableforsalesecuritiesadjustmentsincludingamountsreclassifiedfrom Aoci OtherComprehensiveIncomeLossavailableforsalesecuritiesadjustmentsincludingamountsreclassifiedfromAOCI	2300000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-400000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	2400000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	600000	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-500000	USD
CY2017	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-900000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-3100000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-3600000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-6900000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-9300000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	16100000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-16800000	USD
CY2018Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	666700000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-220400000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-120600000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	771600000	USD
CY2019Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	601800000	USD
CY2019Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	648700000	USD
CY2018Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	579200000	USD
CY2019Q3	us-gaap	Inventory Net InventoryNet	444900000	USD
CY2018Q3	us-gaap	Inventory Net InventoryNet	384100000	USD
CY2019Q3	us-gaap	Prepaid Taxes PrepaidTaxes	34900000	USD
CY2018Q3	us-gaap	Prepaid Taxes PrepaidTaxes	31700000	USD
CY2019Q3	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	62800000	USD
CY2018Q3	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	61500000	USD
CY2019Q3	us-gaap	Assets Current AssetsCurrent	1793100000	USD
CY2018Q3	us-gaap	Assets Current AssetsCurrent	1723200000	USD
CY2019Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	470900000	USD
CY2018Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	478200000	USD
CY2019Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	1459800000	USD
CY2018Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	2398600000	USD
CY2019Q3	us-gaap	Goodwill Goodwill	2563700000	USD
CY2018Q3	us-gaap	Goodwill Goodwill	2533200000	USD
CY2019Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	154600000	USD
CY2018Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	97700000	USD
CY2019Q3	us-gaap	Assets Assets	6442100000	USD
CY2018Q3	us-gaap	Assets Assets	7230900000	USD
CY2019Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	271400000	USD
CY2018Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	599700000	USD
CY2019Q3	us-gaap	Accounts Payable Current AccountsPayableCurrent	186500000	USD
CY2018Q3	us-gaap	Accounts Payable Current AccountsPayableCurrent	192200000	USD
CY2019Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	430900000	USD
CY2018Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	436100000	USD
CY2019Q3	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	179500000	USD
CY2018Q3	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	172900000	USD
CY2019Q3	us-gaap	Capital Lease Obligations Current CapitalLeaseObligationsCurrent	1800000	USD
CY2018Q3	us-gaap	Capital Lease Obligations Current CapitalLeaseObligationsCurrent	1700000	USD
CY2019Q3	us-gaap	Liabilities Current LiabilitiesCurrent	1070100000	USD
CY2018Q3	us-gaap	Liabilities Current LiabilitiesCurrent	1402600000	USD
CY2019Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2783600000	USD
CY2018Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2704600000	USD
CY2019Q3	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	19200000	USD
CY2018Q3	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	498200000	USD
CY2019Q3	us-gaap	Deferred Revenue Noncurrent DeferredRevenueNoncurrent	15800000	USD
CY2018Q3	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	20900000	USD
CY2019Q3	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	275300000	USD
CY2018Q3	us-gaap	Deferred Revenue Noncurrent DeferredRevenueNoncurrent	18200000	USD
CY2019Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	162400000	USD
CY2018Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	157600000	USD
CY2019Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2018Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2018Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2019Q3	us-gaap	Common Stock Value CommonStockValue	2900000	USD
CY2018Q3	us-gaap	Common Stock Value CommonStockValue	2900000	USD
CY2019Q3	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	5769800000	USD
CY2018Q3	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	5671300000	USD
CY2019Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-2688700000	USD
CY2018Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-2494000000.0	USD
CY2019Q3	us-gaap	Treasury Stock Value TreasuryStockValue	926000000.0	USD
CY2018Q3	us-gaap	Treasury Stock Value TreasuryStockValue	725900000	USD
CY2019Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-42300000	USD
CY2018Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-25500000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	2115700000	USD
CY2018Q3	us-gaap	Stockholders Equity StockholdersEquity	2428800000	USD
CY2019Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	6442100000	USD
CY2018Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	7230900000	USD
CY2016Q3	us-gaap	Stockholders Equity StockholdersEquity	2142700000	USD
CY2017	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	33100000	USD
CY2017	us-gaap	Restricted Stock Value Shares Issued Net Of Tax Withholdings RestrictedStockValueSharesIssuedNetOfTaxWithholdings	-19700000	USD
CY2017	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	15000000.0	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	68200000	USD
CY2017	holx	Adjustments To Additional Paid In Capital Reclassification Of Liability Award To Equity AdjustmentsToAdditionalPaidInCapitalReclassificationOfLiabilityAwardToEquity	7800000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt	-33900000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	755500000	USD
CY2017	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	7600000	USD
CY2017	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-900000	USD
CY2017	us-gaap	Treasury Stock Value Acquired Par Value Method TreasuryStockValueAcquiredParValueMethod	200100000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	800000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	2300000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-6900000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	2400000	USD
CY2017Q3	us-gaap	Stockholders Equity StockholdersEquity	2784700000	USD
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	17300000	USD
CY2018	us-gaap	Restricted Stock Value Shares Issued Net Of Tax Withholdings RestrictedStockValueSharesIssuedNetOfTaxWithholdings	-16700000	USD
CY2018	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	15600000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	65000000.0	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt	-40700000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-111300000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-111300000	USD
CY2018	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-8100000	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-500000	USD
CY2018	us-gaap	Treasury Stock Value Acquired Par Value Method TreasuryStockValueAcquiredParValueMethod	275800000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-5700000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-3600000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-400000	USD
CY2018Q3	us-gaap	Stockholders Equity StockholdersEquity	2428800000	USD
CY2019	holx	Accountingstandardtransitionadjustment Asc606 AccountingstandardtransitionadjustmentASC606	6400000	USD
CY2019	holx	Accountingstandardtransitionadjustment Asc606 AccountingstandardtransitionadjustmentASC606	6400000	USD
CY2019	holx	Accountingstandardtransitionadjustment Asu201616 AccountingstandardtransitionadjustmentASU201616	2500000	USD
CY2019	holx	Accountingstandardtransitionadjustment Asu201616 AccountingstandardtransitionadjustmentASU201616	2500000	USD
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	32800000	USD
CY2019	us-gaap	Restricted Stock Value Shares Issued Net Of Tax Withholdings RestrictedStockValueSharesIssuedNetOfTaxWithholdings	-12800000	USD
CY2019	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	16500000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	62000000.0	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-203600000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-203600000	USD
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-14800000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	600000	USD
CY2019	us-gaap	Treasury Stock Value Acquired Par Value Method TreasuryStockValueAcquiredParValueMethod	200100000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-8000000.0	USD
CY2019	us-gaap	Unrealized Gain Loss On Interest Rate Cash Flow Hedges Pretax Accumulated Other Comprehensive Income Loss UnrealizedGainLossOnInterestRateCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncomeLoss	3500000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-3100000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	2115700000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-203600000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-111300000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	755500000	USD
CY2019	us-gaap	Depreciation Depreciation	92500000	USD
CY2018	us-gaap	Depreciation Depreciation	101600000	USD
CY2017	us-gaap	Depreciation Depreciation	89600000	USD
CY2019	us-gaap	Adjustment For Amortization AdjustmentForAmortization	370600000	USD
CY2018	us-gaap	Adjustment For Amortization AdjustmentForAmortization	378700000	USD
CY2017	us-gaap	Adjustment For Amortization AdjustmentForAmortization	359600000	USD
CY2019	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	8600000	USD
CY2018	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	15000000.0	USD
CY2017	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	49400000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	62000000.0	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	65000000.0	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	68200000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-235700000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-477300000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-357200000	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	685700000	USD
CY2017	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2019	holx	Impairmentofintangibleassetsandequipment Impairmentofintangibleassetsandequipment	685400000	USD
CY2018	holx	Impairmentofintangibleassetsandequipment Impairmentofintangibleassetsandequipment	46000000.0	USD
CY2017	holx	Impairmentofintangibleassetsandequipment Impairmentofintangibleassetsandequipment	0	USD
CY2019	holx	Fair Value Write Up Of Acquired Inventory FairValueWriteUpOfAcquiredInventory	7100000	USD
CY2018	holx	Fair Value Write Up Of Acquired Inventory FairValueWriteUpOfAcquiredInventory	1100000	USD
CY2017	holx	Fair Value Write Up Of Acquired Inventory FairValueWriteUpOfAcquiredInventory	39700000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-800000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-45900000	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-3200000	USD
CY2019	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	USD
CY2018	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	USD
CY2017	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	899700000	USD
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-18100000	USD
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-8700000	USD
CY2017	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-3200000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	76500000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	38200000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	41500000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	63000000.0	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	50600000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	11600000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Taxes IncreaseDecreaseInPrepaidTaxes	3200000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Taxes IncreaseDecreaseInPrepaidTaxes	9400000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Taxes IncreaseDecreaseInPrepaidTaxes	8700000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	6000000.0	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	4200000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	2400000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-5500000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	23900000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-10600000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-16500000	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	53800000	USD
CY2017	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-17800000	USD
CY2019	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	14400000	USD
CY2018	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-1500000	USD
CY2017	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-10600000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	649500000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	732900000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	8300000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	110600000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	76500000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	1558100000	USD
CY2019	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	0	USD
CY2018	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	0	USD
CY2017	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	1865000000.0	USD
CY2019	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	18200000	USD
CY2018	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	0	USD
CY2017	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	0	USD
CY2019	holx	Funding Of Loans To Ssi FundingOfLoansToSSI	28400000	USD
CY2018	holx	Funding Of Loans To Ssi FundingOfLoansToSSI	0	USD
CY2017	holx	Funding Of Loans To Ssi FundingOfLoansToSSI	0	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	57000000.0	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	58400000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	57800000	USD
CY2019	holx	Payments To Manufacture Equipment Under Customer Usage Agreements PaymentsToManufactureEquipmentUnderCustomerUsageAgreements	52100000	USD
CY2018	holx	Payments To Manufacture Equipment Under Customer Usage Agreements PaymentsToManufactureEquipmentUnderCustomerUsageAgreements	47200000	USD
CY2017	holx	Payments To Manufacture Equipment Under Customer Usage Agreements PaymentsToManufactureEquipmentUnderCustomerUsageAgreements	49800000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	0	USD
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	0	USD
CY2017	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	87100000	USD
CY2019	holx	Purchaseofcostmethodinvestment Purchaseofcostmethodinvestment	3000000.0	USD
CY2018	holx	Purchaseofcostmethodinvestment Purchaseofcostmethodinvestment	6000000.0	USD
CY2017	holx	Purchaseofcostmethodinvestment Purchaseofcostmethodinvestment	0	USD
CY2019	us-gaap	Payments To Acquire In Process Research And Development PaymentsToAcquireInProcessResearchAndDevelopment	4500000	USD
CY2018	us-gaap	Payments To Acquire In Process Research And Development PaymentsToAcquireInProcessResearchAndDevelopment	0	USD
CY2017	us-gaap	Payments To Acquire In Process Research And Development PaymentsToAcquireInProcessResearchAndDevelopment	0	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	6900000	USD
CY2018	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	7100000	USD
CY2017	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	600000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-280700000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-195200000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	285800000	USD
CY2019	us-gaap	Proceeds From Repayments Of Other Long Term Debt ProceedsFromRepaymentsOfOtherLongTermDebt	1500000000.0	USD
CY2018	us-gaap	Proceeds From Repayments Of Other Long Term Debt ProceedsFromRepaymentsOfOtherLongTermDebt	1500000000.0	USD
CY2017	us-gaap	Proceeds From Repayments Of Other Long Term Debt ProceedsFromRepaymentsOfOtherLongTermDebt	0	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1462500000	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1359400000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	84400000	USD
CY2019	holx	Proceedsfrom Senior Notes ProceedsfromSeniorNotes	0	USD
CY2018	holx	Proceedsfrom Senior Notes ProceedsfromSeniorNotes	1350000000.0	USD
CY2017	holx	Proceedsfrom Senior Notes ProceedsfromSeniorNotes	0	USD
CY2019	holx	Repaymentof Senior Notes RepaymentofSeniorNotes	0	USD
CY2018	holx	Repaymentof Senior Notes RepaymentofSeniorNotes	1037700000	USD
CY2017	holx	Repaymentof Senior Notes RepaymentofSeniorNotes	0	USD
CY2019	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	0	USD
CY2018	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	546200000	USD
CY2017	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	396200000	USD
CY2019	holx	Repaymentofacquireddebt Repaymentofacquireddebt	2500000	USD
CY2018	holx	Repaymentofacquireddebt Repaymentofacquireddebt	3300000	USD
CY2017	holx	Repaymentofacquireddebt Repaymentofacquireddebt	0	USD
CY2019	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	480000000.0	USD
CY2018	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	1150000000.0	USD
CY2017	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	345000000.0	USD
CY2019	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	780000000.0	USD
CY2018	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	1195000000.0	USD
CY2017	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	USD
CY2019	us-gaap	Proceeds From Accounts Receivable Securitization ProceedsFromAccountsReceivableSecuritization	43000000.0	USD
CY2018	us-gaap	Proceeds From Accounts Receivable Securitization ProceedsFromAccountsReceivableSecuritization	34000000.0	USD
CY2017	us-gaap	Proceeds From Accounts Receivable Securitization ProceedsFromAccountsReceivableSecuritization	48000000.0	USD
CY2019	us-gaap	Repayments Of Accounts Receivable Securitization RepaymentsOfAccountsReceivableSecuritization	34000000.0	USD
CY2018	us-gaap	Repayments Of Accounts Receivable Securitization RepaymentsOfAccountsReceivableSecuritization	9000000.0	USD
CY2017	us-gaap	Repayments Of Accounts Receivable Securitization RepaymentsOfAccountsReceivableSecuritization	48000000.0	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	200100000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	275800000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	200100000	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	2700000	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	23500000	USD
CY2017	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2019	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	6500000	USD
CY2018	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	0	USD
CY2017	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	0	USD
CY2019	holx	Interest Rate Cap Agreements Aggregate Premium Payable InterestRateCapAgreementsAggregatePremiumPayable	1500000	USD
CY2018	holx	Interest Rate Cap Agreements Aggregate Premium Payable InterestRateCapAgreementsAggregatePremiumPayable	3700000	USD
CY2017	holx	Interest Rate Cap Agreements Aggregate Premium Payable InterestRateCapAgreementsAggregatePremiumPayable	1900000	USD
CY2019	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	49800000	USD
CY2018	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	33200000	USD
CY2017	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	49000000.0	USD
CY2019	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	1700000	USD
CY2018	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	1700000	USD
CY2017	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	900000	USD
CY2019	holx	Payment For Tax Withholding Related To Vested And Released Restricted Stock Units PaymentForTaxWithholdingRelatedToVestedAndReleasedRestrictedStockUnits	12800000	USD
CY2018	holx	Payment For Tax Withholding Related To Vested And Released Restricted Stock Units PaymentForTaxWithholdingRelatedToVestedAndReleasedRestrictedStockUnits	16700000	USD
CY2017	holx	Payment For Tax Withholding Related To Vested And Released Restricted Stock Units PaymentForTaxWithholdingRelatedToVestedAndReleasedRestrictedStockUnits	19700000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-431500000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-404800000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-309200000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-2200000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-6800000	USD
CY2017	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	7300000	USD
CY2019	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-64900000	USD
CY2018	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	126100000	USD
CY2017	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-7800000	USD
CY2018Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	666700000	USD
CY2017Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	540600000	USD
CY2016Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	548400000	USD
CY2019Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	601800000	USD
CY2018Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	666700000	USD
CY2017Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	540600000	USD
CY2017Q1	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	5	Segment
CY2017	us-gaap	Interest Paid InterestPaid	102400000	USD
CY2018	us-gaap	Interest Paid InterestPaid	122100000	USD
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<div style="line-height:120%;padding-top:18px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;">Management’s Estimates and Uncertainties</span></div><div style="line-height:120%;padding-top:6px;text-indent:32px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">The preparation of financial statements in conformity with U.S. generally accepted accounting principles ("GAAP") requires management to make significant estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Significant estimates and assumptions by management affect the Company’s revenue recognition for multiple performance obligation arrangements, estimated fair value of cost-method equity investments, valuations, purchase price allocations and contingent consideration related to business combinations, expected future cash flows including growth rates, discount rates, terminal values and other assumptions and estimates used to evaluate the recoverability of long-lived assets and goodwill, estimated fair values of intangible assets and goodwill, amortization methods and periods, warranty reserves, certain accrued expenses, restructuring and other related charges, contingent liabilities, tax reserves, deferred tax rates and recoverability of the Company’s net deferred tax assets and related valuation allowances.</span></div><div style="line-height:120%;padding-top:12px;text-indent:32px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Although the Company regularly assesses these estimates, actual results could differ materially from these estimates. Changes in estimates are recorded in the period in which they become known. The Company bases its estimates on historical experience and various other assumptions that it believes to be reasonable under the circumstances.</span></div><div style="line-height:120%;padding-top:12px;text-indent:32px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">The Company is subject to a number of risks similar to those of other companies of similar size in its industry, including dependence on third-party reimbursements to support the markets of the Company’s products, early stage of development of certain products, rapid technological changes, recoverability of long-lived assets (including intangible assets and goodwill), competition, stability of world financial markets, ability to obtain regulatory approvals, changes in the regulatory environment, limited number of suppliers, customer concentration, integration of acquisitions, substantial indebtedness, government </span></div><div style="line-height:120%;padding-top:12px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">regulations, management of international activities, protection of proprietary rights, patent and other litigation, dependence on contract manufacturers and dependence on key individuals.</span></div>
CY2019	holx	Cash Equivalents Maturity Period CashEquivalentsMaturityPeriod	three months or less
CY2019	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="line-height:120%;padding-top:18px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;">Concentrations of Credit Risk</span></div><div style="line-height:120%;padding-top:6px;text-indent:32px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Financial instruments that subject the Company to credit risk primarily consist of cash and cash equivalents, cost-method and equity method investments, and trade accounts receivable. The Company invests its cash and cash equivalents with high credit quality financial institutions.</span></div><div style="line-height:120%;padding-top:12px;text-indent:32px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">The Company’s customers are principally located in the United States, Europe and Asia. The Company performs ongoing credit evaluations of the financial condition of its customers and generally does not require collateral. Although the Company is directly affected by the overall financial condition of the healthcare industry, as well as global economic conditions, management does not believe significant credit risk exists as of </span><span style="font-family:inherit;font-size:10pt;">September 28, 2019</span><span style="font-family:inherit;font-size:10pt;">. The Company generally has not experienced any material losses related to receivables from individual customers or groups of customers in the healthcare industry. The Company maintains an allowance for doubtful accounts based on accounts past due and historical collection experience.</span></div><span style="font-family:inherit;font-size:10pt;">There were </span><span style="font-family:inherit;font-size:10pt;"><span>no</span></span><span style="font-family:inherit;font-size:10pt;"> customers with balances greater than </span><span style="font-family:inherit;font-size:10pt;"><span>10%</span></span><span style="font-family:inherit;font-size:10pt;"> of accounts receivable as of </span><span style="font-family:inherit;font-size:10pt;">September 28, 2019</span><span style="font-family:inherit;font-size:10pt;"> and </span><span style="font-family:inherit;font-size:10pt;">September 29, 2018</span><span style="font-family:inherit;font-size:10pt;">, or any customers that represented greater than </span><span style="font-family:inherit;font-size:10pt;"><span>10%</span></span><span style="font-family:inherit;font-size:10pt;"> of consolidated revenues for fiscal years </span><span style="font-family:inherit;font-size:10pt;">2019</span><span style="font-family:inherit;font-size:10pt;">, </span><span style="font-family:inherit;font-size:10pt;">2018</span><span style="font-family:inherit;font-size:10pt;"> and </span><span style="font-family:inherit;font-size:10pt;">2017</span>
CY2019Q3	holx	Number Of Customers With Balance Greater Than Specified Percentage NumberOfCustomersWithBalanceGreaterThanSpecifiedPercentage	0	Customer
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	180600000	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	178200000	USD
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	867800000	USD
CY2019	us-gaap	Interest Paid InterestPaid	132500000	USD
CY2019Q3	us-gaap	Inventory Raw Materials InventoryRawMaterials	166100000	USD
CY2018Q3	us-gaap	Inventory Raw Materials InventoryRawMaterials	134900000	USD
CY2019Q3	us-gaap	Inventory Work In Process InventoryWorkInProcess	54500000	USD
CY2018Q3	us-gaap	Inventory Work In Process InventoryWorkInProcess	52100000	USD
CY2019Q3	us-gaap	Inventory Finished Goods InventoryFinishedGoods	224300000	USD
CY2018Q3	us-gaap	Inventory Finished Goods InventoryFinishedGoods	197100000	USD
CY2019Q3	us-gaap	Inventory Net InventoryNet	444900000	USD
CY2018Q3	us-gaap	Inventory Net InventoryNet	384100000	USD
CY2019Q3	holx	Manufacturing Equipment And Software ManufacturingEquipmentAndSoftware	379200000	USD
CY2018Q3	holx	Manufacturing Equipment And Software ManufacturingEquipmentAndSoftware	391900000	USD
CY2019Q3	holx	Equipment Under Customer Usage Agreements EquipmentUnderCustomerUsageAgreements	435500000	USD
CY2018Q3	holx	Equipment Under Customer Usage Agreements EquipmentUnderCustomerUsageAgreements	399600000	USD
CY2019Q3	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	196700000	USD
CY2018Q3	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	175100000	USD
CY2019Q3	us-gaap	Leasehold Improvements Gross LeaseholdImprovementsGross	61700000	USD
CY2018Q3	us-gaap	Leasehold Improvements Gross LeaseholdImprovementsGross	63000000.0	USD
CY2019Q3	us-gaap	Land Land	46300000	USD
CY2018Q3	us-gaap	Land Land	46300000	USD
CY2019Q3	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	17500000	USD
CY2018Q3	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	18400000	USD
CY2019Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1136900000	USD
CY2018Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1094300000	USD
CY2019Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	666000000.0	USD
CY2018Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	616100000	USD
CY2019Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	470900000	USD
CY2018Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	478200000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	4786600000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	3326800000	USD
CY2018Q3	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	5571800000	USD
CY2018Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	3173200000	USD
CY2018Q1	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	46000000.0	USD
CY2018	holx	Accelerated Depreciation AcceleratedDepreciation	5900000	USD
CY2017	holx	Accelerated Depreciation AcceleratedDepreciation	3000000.0	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	295500000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	274200000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	263800000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	166200000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	143100000	USD
CY2018Q3	us-gaap	Goodwill Goodwill	2533200000	USD
CY2019	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-4500000	USD
CY2019Q3	us-gaap	Goodwill Goodwill	2563700000	USD
CY2019Q3	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	44600000	USD
CY2018Q3	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	44200000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Gross Noncurrent DeferredTaxAssetsGrossNoncurrent	17200000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Gross Noncurrent DeferredTaxAssetsGrossNoncurrent	12900000	USD
CY2019Q3	holx	Cost Method Equity Investments CostMethodEquityInvestments	11400000	USD
CY2018Q3	holx	Cost Method Equity Investments CostMethodEquityInvestments	8800000	USD
CY2019Q3	holx	Equity Method Investment And Loans To Acquiree EquityMethodInvestmentAndLoansToAcquiree	42700000	USD
CY2018Q3	holx	Equity Method Investment And Loans To Acquiree EquityMethodInvestmentAndLoansToAcquiree	0	USD
CY2019Q3	us-gaap	Other Assets Miscellaneous OtherAssetsMiscellaneous	38700000	USD
CY2018Q3	us-gaap	Other Assets Miscellaneous OtherAssetsMiscellaneous	31800000	USD
CY2019Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	154600000	USD
CY2018Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	97700000	USD
CY2018Q3	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-26600000	USD
CY2018Q3	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	1100000	USD
CY2018Q3	holx	Accumulatedothercomprehensive Incomeloss Hedge AccumulatedothercomprehensiveIncomelossHedge	2200000	USD
CY2018Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-25500000	USD
CY2017Q3	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-18500000	USD
CY2017Q3	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-400000	USD
CY2017Q3	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	1600000	USD
CY2017Q3	holx	Accumulatedothercomprehensive Incomeloss Hedge AccumulatedothercomprehensiveIncomelossHedge	4300000	USD
CY2017Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-16200000	USD
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-14800000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	600000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-8000000.0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	-19900000	USD
CY2018	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-8100000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-500000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-5700000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	-13300000	USD
CY2019	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	3100000	USD
CY2018	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	4000000.0	USD
CY2019Q3	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-41400000	USD
CY2019Q3	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	1700000	USD
CY2019Q3	holx	Accumulatedothercomprehensive Incomeloss Hedge AccumulatedothercomprehensiveIncomelossHedge	-2700000	USD
CY2019Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-42300000	USD
CY2018Q3	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-26600000	USD
CY2018Q3	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
CY2018Q3	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	1100000	USD
CY2018Q3	holx	Accumulatedothercomprehensive Incomeloss Hedge AccumulatedothercomprehensiveIncomelossHedge	2200000	USD
CY2018Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-25500000	USD
CY2015	holx	Interest Rate Cap Agreements Aggregate Premium Payable InterestRateCapAgreementsAggregatePremiumPayable	13200000	USD
CY2017	holx	Interest Rate Cap Agreements Aggregate Premium Payable InterestRateCapAgreementsAggregatePremiumPayable	1900000	USD
CY2018	holx	Interest Rate Cap Agreements Aggregate Premium Payable InterestRateCapAgreementsAggregatePremiumPayable	3700000	USD
CY2019	holx	Interest Rate Cap Agreements Aggregate Premium Payable InterestRateCapAgreementsAggregatePremiumPayable	1500000	USD
CY2019Q3	holx	Principal Amount Of Borrowings PrincipalAmountOfBorrowings	1000000000.0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-3100000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-3600000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-6900000	USD
CY2019	us-gaap	Derivative Instruments Gain Loss Reclassification From Accumulated Oci To Income Estimated Net Amount To Be Transferred DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred	2300000	USD
CY2019Q3	us-gaap	Derivative Liability Notional Amount DerivativeLiabilityNotionalAmount	1000000000.0	USD
CY2019Q3	us-gaap	Derivative Liability Notional Amount DerivativeLiabilityNotionalAmount	1000000000.0	USD
CY2019Q3	holx	Principal Amount Of Borrowings PrincipalAmountOfBorrowings	1000000000.0	USD
CY2019	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	11000000.0	USD
CY2018	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	1300000	USD
CY2017	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	3100000	USD
CY2019	us-gaap	Unrealized Gain Loss On Foreign Currency Derivatives Net Before Tax UnrealizedGainLossOnForeignCurrencyDerivativesNetBeforeTax	2200000	USD
CY2018	us-gaap	Unrealized Gain Loss On Foreign Currency Derivatives Net Before Tax UnrealizedGainLossOnForeignCurrencyDerivativesNetBeforeTax	6600000	USD
CY2017	us-gaap	Unrealized Gain Loss On Foreign Currency Derivatives Net Before Tax UnrealizedGainLossOnForeignCurrencyDerivativesNetBeforeTax	3600000	USD
CY2019Q3	holx	Notional Amount NotionalAmount	104200000	USD
CY2019Q3	us-gaap	Cash Flow Hedge Derivative Instrument Assets At Fair Value CashFlowHedgeDerivativeInstrumentAssetsAtFairValue	4800000	USD
CY2018Q3	us-gaap	Cash Flow Hedge Derivative Instrument Assets At Fair Value CashFlowHedgeDerivativeInstrumentAssetsAtFairValue	7700000	USD
CY2019	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	-4500000	USD
CY2018	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	-5700000	USD
CY2017	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	800000	USD
CY2019	us-gaap	Gain Loss On Fair Value Hedges Recognized In Earnings GainLossOnFairValueHedgesRecognizedInEarnings	8900000	USD
CY2018	us-gaap	Gain Loss On Fair Value Hedges Recognized In Earnings GainLossOnFairValueHedgesRecognizedInEarnings	5300000	USD
CY2017	us-gaap	Gain Loss On Fair Value Hedges Recognized In Earnings GainLossOnFairValueHedgesRecognizedInEarnings	500000	USD
CY2018Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	16200000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	4400000	USD
CY2019	holx	Accounts Receivable Allowance Reduction AccountsReceivableAllowanceReduction	2800000	USD
CY2019Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	17800000	USD
CY2017Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	9800000	USD
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	7000000.0	USD
CY2018	holx	Accounts Receivable Allowance Reduction AccountsReceivableAllowanceReduction	600000	USD
CY2018Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	16200000	USD
CY2016Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	12700000	USD
CY2017	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1800000	USD
CY2017	holx	Accounts Receivable Allowance Reduction AccountsReceivableAllowanceReduction	4700000	USD
CY2017Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	9800000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	269413000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	275105000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	279811000	shares
CY2019	holx	Weighted Average Common Stock Equivalents From Assumed Exercise Of Stock Options And Restricted Stock Units WeightedAverageCommonStockEquivalentsFromAssumedExerciseOfStockOptionsAndRestrictedStockUnits	0	shares
CY2018	holx	Weighted Average Common Stock Equivalents From Assumed Exercise Of Stock Options And Restricted Stock Units WeightedAverageCommonStockEquivalentsFromAssumedExerciseOfStockOptionsAndRestrictedStockUnits	0	shares
CY2017	holx	Weighted Average Common Stock Equivalents From Assumed Exercise Of Stock Options And Restricted Stock Units WeightedAverageCommonStockEquivalentsFromAssumedExerciseOfStockOptionsAndRestrictedStockUnits	2885000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	0	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	0	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	2957000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	269413000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	275105000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	285653000	shares
CY2018Q3	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	15900000	USD
CY2019	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	14100000	USD
CY2019	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	16100000	USD
CY2019Q3	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	13900000	USD
CY2017Q3	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	17000000.0	USD
CY2018	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	18300000	USD
CY2018	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	19400000	USD
CY2018Q3	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	15900000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	29500000	USD
CY2018	us-gaap	Advertising Expense AdvertisingExpense	26900000	USD
CY2017	us-gaap	Advertising Expense AdvertisingExpense	22500000	USD
CY2017	us-gaap	Revenues Revenues	3058800000	USD
CY2019	us-gaap	Revenues Revenues	3367300000	USD
CY2018	us-gaap	Revenues Revenues	3217900000	USD
CY2019	us-gaap	Revenues Revenues	3367300000	USD
CY2018	us-gaap	Revenues Revenues	3217900000	USD
CY2017	us-gaap	Revenues Revenues	3058800000	USD
CY2019	us-gaap	Revenues Revenues	3367300000	USD
CY2018	us-gaap	Revenues Revenues	3217900000	USD
CY2017	us-gaap	Revenues Revenues	3058800000	USD
CY2019Q3	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	438400000	USD
CY2019Q3	us-gaap	Revenue Remaining Performance Obligation Percentage RevenueRemainingPerformanceObligationPercentage	0.38
CY2019Q3	us-gaap	Revenue Remaining Performance Obligation Percentage RevenueRemainingPerformanceObligationPercentage	0.27
CY2019Q3	us-gaap	Revenue Remaining Performance Obligation Percentage RevenueRemainingPerformanceObligationPercentage	0.21
CY2019Q3	us-gaap	Revenue Remaining Performance Obligation Percentage RevenueRemainingPerformanceObligationPercentage	0.10
CY2019Q3	us-gaap	Revenue Remaining Performance Obligation Percentage RevenueRemainingPerformanceObligationPercentage	0.05
CY2019	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	158900000	USD
CY2019	us-gaap	Severance Costs1 SeveranceCosts1	4000000.0	USD
CY2019Q3	holx	Estimatedseveranceandbenefitsfuturecosts Estimatedseveranceandbenefitsfuturecosts	100000	USD
CY2018	us-gaap	Severance Costs1 SeveranceCosts1	9000000.0	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Plan Modification Incremental Compensation Cost ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationIncrementalCompensationCost	1300000	USD
CY2019Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	271400000	USD
CY2018Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	599700000	USD
CY2019Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2783600000	USD
CY2018Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2704600000	USD
CY2019Q3	us-gaap	Long Term Debt LongTermDebt	3055000000.0	USD
CY2018Q3	us-gaap	Long Term Debt LongTermDebt	3304300000	USD
CY2019Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	271500000	USD
CY2019Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	75000000.0	USD
CY2019Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	75000000.0	USD
CY2019Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	112500000	USD
CY2019Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	1200000000.0	USD
CY2019Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	1350000000.0	USD
CY2019Q3	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	3084000000.0	USD
	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	12300000	USD
	holx	Conversion Premium ConversionPremium	8700000	USD
CY2017Q4	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt	13400000	USD
CY2017Q4	holx	Deferred Taxes Reacquisitionof Equity Component DeferredTaxesReacquisitionofEquityComponent	3800000	USD
CY2017Q3	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	100000000.0	USD
CY2017Q3	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	269100000	USD
CY2017Q3	us-gaap	Accretion Expense AccretionExpense	18500000	USD
CY2017Q3	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-2600000	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-3200000	USD
CY2019Q3	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	7700000	USD
CY2019Q3	us-gaap	Fair Value Liabilities Measured On Recurring Basis Obligations FairValueLiabilitiesMeasuredOnRecurringBasisObligations	9200000	USD
CY2018Q3	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	10900000	USD
CY2018Q3	us-gaap	Fair Value Liabilities Measured On Recurring Basis Obligations FairValueLiabilitiesMeasuredOnRecurringBasisObligations	8000000.0	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-174300000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-581900000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	1105800000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-83400000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	163300000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	124700000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-257700000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-418600000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1230500000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	142900000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	137100000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	701100000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-189900000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-461900000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-276900000	USD
CY2019	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	-47000000.0	USD
CY2018	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	-324800000	USD
CY2017	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	424200000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	22100000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	11000000.0	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	53100000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-41000000.0	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-11300000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-15900000	USD
CY2019	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	-18900000	USD
CY2018	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	-300000	USD
CY2017	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	37200000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	16500000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	21900000	USD
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	13900000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-4700000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-4100000	USD
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-300000	USD
CY2019	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	11800000	USD
CY2018	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	17800000	USD
CY2017	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	13600000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-54100000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-307300000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	475000000.0	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.245
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	0
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	-0.031
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	0.017
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.007
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.007
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.023
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	0.021
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	-0.001
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	0
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Restructuring Charges EffectiveIncomeTaxRateReconciliationNondeductibleExpenseRestructuringCharges	0.038
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Restructuring Charges EffectiveIncomeTaxRateReconciliationNondeductibleExpenseRestructuringCharges	0
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Restructuring Charges EffectiveIncomeTaxRateReconciliationNondeductibleExpenseRestructuringCharges	0
CY2019	holx	Effective Income Tax Rate Reconciliation Non Deductible Goodwill EffectiveIncomeTaxRateReconciliationNonDeductibleGoodwill	0
CY2018	holx	Effective Income Tax Rate Reconciliation Non Deductible Goodwill EffectiveIncomeTaxRateReconciliationNonDeductibleGoodwill	-0.394
CY2017	holx	Effective Income Tax Rate Reconciliation Non Deductible Goodwill EffectiveIncomeTaxRateReconciliationNonDeductibleGoodwill	0.092
CY2019	holx	Effective Income Tax Rate Reconciliation Benefit Expense Research And Development EffectiveIncomeTaxRateReconciliationBenefitExpenseResearchAndDevelopment	-0.033
CY2018	holx	Effective Income Tax Rate Reconciliation Benefit Expense Research And Development EffectiveIncomeTaxRateReconciliationBenefitExpenseResearchAndDevelopment	-0.019
CY2017	holx	Effective Income Tax Rate Reconciliation Benefit Expense Research And Development EffectiveIncomeTaxRateReconciliationBenefitExpenseResearchAndDevelopment	0.008
CY2019	holx	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	-0.020
CY2018	holx	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	0.827
CY2017	holx	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	0
CY2019	holx	Effective Income Tax Rate Reconciliation Unrecognized Tax Benefits EffectiveIncomeTaxRateReconciliationUnrecognizedTaxBenefits	0.001
CY2018	holx	Effective Income Tax Rate Reconciliation Unrecognized Tax Benefits EffectiveIncomeTaxRateReconciliationUnrecognizedTaxBenefits	-0.018
CY2017	holx	Effective Income Tax Rate Reconciliation Unrecognized Tax Benefits EffectiveIncomeTaxRateReconciliationUnrecognizedTaxBenefits	-0.014
CY2019	holx	Effective Income Tax Rate Reconciliation Non Deductible Expense Executive Compensation Cost EffectiveIncomeTaxRateReconciliationNonDeductibleExpenseExecutiveCompensationCost	-0.008
CY2018	holx	Effective Income Tax Rate Reconciliation Non Deductible Expense Executive Compensation Cost EffectiveIncomeTaxRateReconciliationNonDeductibleExpenseExecutiveCompensationCost	-0.003
CY2017	holx	Effective Income Tax Rate Reconciliation Non Deductible Expense Executive Compensation Cost EffectiveIncomeTaxRateReconciliationNonDeductibleExpenseExecutiveCompensationCost	-0.005
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.054
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.052
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.026
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	-0.012
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.002
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.095
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.005
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.015
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.031
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.010
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.004
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.210
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.734
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.386
CY2018Q4	holx	Tax Cuts And Jobs Act Measurement Period Adjustment Income Tax Expense Benefit TaxCutsAndJobsActMeasurementPeriodAdjustmentIncomeTaxExpenseBenefit	5000000.0	USD
CY2018Q4	holx	Tax Cuts And Jobs Act Of2017 Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncomeTaxExpenseBenefit	-341200000	USD
CY2018	holx	Tax Cuts And Jobs Act Incomplete Accounting Provisional Income Tax Expense Benefit TaxCutsAndJobsActIncompleteAccountingProvisionalIncomeTaxExpenseBenefit	-346200000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	34500000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	30900000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	6400000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	6500000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	24700000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	30700000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves	22700000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves	22100000	USD
CY2019Q3	holx	Uk Intangibleassets UKIntangibleassets	25400000	USD
CY2018Q3	holx	Uk Intangibleassets UKIntangibleassets	0	USD
CY2019Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	20900000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	24000000.0	USD
CY2019Q3	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	14800000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	13300000	USD
CY2019Q3	holx	Deferred Tax Assets Nonqualified Deferred Compensation Plan DeferredTaxAssetsNonqualifiedDeferredCompensationPlan	12900000	USD
CY2018Q3	holx	Deferred Tax Assets Nonqualified Deferred Compensation Plan DeferredTaxAssetsNonqualifiedDeferredCompensationPlan	12300000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	17800000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	11500000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	180100000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	151300000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	60700000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	25500000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	119400000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	125800000	USD
CY2019Q3	holx	Deferred Tax Liabilities Depreciation And Amortization DeferredTaxLiabilitiesDepreciationAndAmortization	373000000.0	USD
CY2018Q3	holx	Deferred Tax Liabilities Depreciation And Amortization DeferredTaxLiabilitiesDepreciationAndAmortization	606600000	USD
CY2019Q3	holx	Deferred Tax Liabilities Debt Discount DeferredTaxLiabilitiesDebtDiscount	4500000	USD
CY2018Q3	holx	Deferred Tax Liabilities Debt Discount DeferredTaxLiabilitiesDebtDiscount	4500000	USD
CY2019Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	377500000	USD
CY2018Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	611100000	USD
CY2019Q3	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	258100000	USD
CY2018Q3	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	485300000	USD
CY2019	us-gaap	Valuation Allowances And Reserves Period Increase Decrease ValuationAllowancesAndReservesPeriodIncreaseDecrease	35200000	USD
CY2019Q3	holx	Deferred Tax Assets Operating Loss Carry Forwards That Will Expire Unutilized Federal DeferredTaxAssetsOperatingLossCarryForwardsThatWillExpireUnutilizedFederal	4500000	USD
CY2019Q3	holx	Deferred Tax Assets Operating Loss Carry Forwards That Will Expire Unutilized State DeferredTaxAssetsOperatingLossCarryForwardsThatWillExpireUnutilizedState	74600000	USD
CY2019Q3	holx	Deferred Tax Assets Operating Loss Carry Forwards That Will Expire Unutilized Foreign DeferredTaxAssetsOperatingLossCarryForwardsThatWillExpireUnutilizedForeign	46600000	USD
CY2019Q3	holx	Gross Unrecognized Tax Benefits GrossUnrecognizedTaxBenefits	101600000	USD
CY2019Q3	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	87300000	USD
CY2018Q3	holx	Gross Unrecognized Tax Benefits GrossUnrecognizedTaxBenefits	89500000	USD
CY2018Q3	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	79000000.0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	12100000	USD
CY2018Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	89500000	USD
CY2017Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	90300000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	22700000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	9000000.0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	6600000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	4800000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	15400000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	5800000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1400000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Acquisition UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Acquisition UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition	400000	USD
CY2019Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	101600000	USD
CY2018Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	89500000	USD
CY2019Q3	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	11100000	USD
CY2018Q3	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	9000000.0	USD
CY2019Q3	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued	0	USD
CY2019	us-gaap	Payments For Other Taxes PaymentsForOtherTaxes	1700000	USD
CY2019	holx	Recognized Tax Benefitduetoreversalofunrecognizedtaxbenefit RecognizedTaxBenefitduetoreversalofunrecognizedtaxbenefit	10900000	USD
CY2018Q4	holx	Tax Cuts And Jobs Act Of2017 Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncomeTaxExpenseBenefit	-341200000	USD
CY2018	holx	Tax Cuts And Jobs Act Incomplete Accounting Provisional Income Tax Expense Benefit TaxCutsAndJobsActIncompleteAccountingProvisionalIncomeTaxExpenseBenefit	-346200000	USD
CY2018Q4	holx	Tax Cuts And Jobs Act Measurement Period Adjustment Income Tax Expense Benefit TaxCutsAndJobsActMeasurementPeriodAdjustmentIncomeTaxExpenseBenefit	5000000.0	USD
CY2018Q4	holx	Tax Cuts And Jobs Act Reduction In Deferred Tax Liability TaxCutsAndJobsActReductionInDeferredTaxLiability	341200000	USD
CY2018	holx	Tax Cuts And Jobs Act Incomplete Accounting Provisional Reduction In Deferred Tax Liability TaxCutsAndJobsActIncompleteAccountingProvisionalReductionInDeferredTaxLiability	346400000	USD
CY2019	holx	Increaseindeferredtaxassetsresultingfromadoptionof Ascu201616 IncreaseindeferredtaxassetsresultingfromadoptionofASCU201616	2900000	USD
CY2019	holx	Deceaseinaccumulateddeficitresultingfromadoptionof Ascu201616 DeceaseinaccumulateddeficitresultingfromadoptionofASCU201616	2500000	USD
CY2019	holx	Deceasetoprepaidtaxesresultingfromadoptionof Ascu201616 DeceasetoprepaidtaxesresultingfromadoptionofASCU201616	400000	USD
CY2019	holx	Increasetoincometaxexpenseadoptionof Asu201616 IncreasetoincometaxexpenseadoptionofASU201616	27800000	USD
CY2019	holx	Decreaseindeferredtaxliabilitiesdueto Asc201616 DecreaseindeferredtaxliabilitiesduetoASC201616	37700000	USD
CY2019	holx	Increaseto Net Incomeresultedfromadoptionof Asu201616 IncreasetoNetIncomeresultedfromadoptionofASU201616	9900000	USD
CY2019	holx	Increaseto Earningsper Shareresultedfromadoptionof Asc201616 IncreasetoEarningsperShareresultedfromadoptionofASC201616	0.04
CY2019	holx	Non Income Tax Loss NonIncomeTaxLoss	35600000	USD
CY2018Q1	us-gaap	Income Tax Reconciliation Tax Settlements State And Local IncomeTaxReconciliationTaxSettlementsStateAndLocal	11000000.0	USD
CY2019	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	5000000.0	shares
CY2018	us-gaap	Proceeds From Repurchase Of Equity ProceedsFromRepurchaseOfEquity	187300000	USD
CY2016Q2	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	500000000.0	USD
CY2018Q3	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	2300000	shares
CY2018Q3	us-gaap	Proceeds From Repurchase Of Equity ProceedsFromRepurchaseOfEquity	88500000	USD
CY2018	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	4800000	shares
CY2019	us-gaap	Proceeds From Repurchase Of Equity ProceedsFromRepurchaseOfEquity	200100000	USD
CY2019Q3	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	211500000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	1700000	shares
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	1000000.0	shares
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	62000000.0	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	65000000.0	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	68200000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	1000000.0	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	41.36
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	40.76
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	38.07
CY2019Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	13.54
CY2018Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	12.98
CY2017Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	12.33
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.030
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.021
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.018
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P4Y9M18D
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P4Y8M12D
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P4Y8M12D
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate	0.343
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate	0.353
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate	0.366
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Expected Dividend ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageExpectedDividend	0	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Expected Dividend ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageExpectedDividend	0	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Expected Dividend ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageExpectedDividend	0	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	8900000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	11700000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	22600000	USD
CY2018Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	6000000.0	shares
CY2018Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	32.13
CY2018	holx	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Remaining Contractual Life ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualLife	P5Y10M24D
CY2018Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	53300000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	1000000.0	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	41.36
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	200000	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	36.04
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1300000	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	25.35
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	26100000	USD
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	5500000	shares
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	35.23
CY2019	holx	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Remaining Contractual Life ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualLife	P6Y1M6D
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	78400000	USD
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	2700000	shares
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	30.58
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P4Y2M12D
CY2019Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	52200000	USD
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	5400000	shares
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	35.20
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P6Y1M6D
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	78100000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	15200000	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	25900000	USD
CY2018Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	2700000	shares
CY2018Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	40.02
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	1100000	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	42.25
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	1100000	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	37.28
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	200000	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	41.23
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	2500000	shares
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	42.17
CY2019	holx	Minimum Target Number Of Shares Issued On Stock Performance In Percent MinimumTargetNumberOfSharesIssuedOnStockPerformanceInPercent	0
CY2019	holx	Maximum Target Number Of Shares Issued Based On Stock Performance In Percent MaximumTargetNumberOfSharesIssuedBasedOnStockPerformanceInPercent	2
CY2019	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	19200000	USD
CY2018	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	18600000	USD
CY2017	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	20200000	USD
CY2019Q3	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	3000000.0	USD
CY2019Q3	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	3000000.0	USD
CY2019Q3	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	3100000	USD
CY2019Q3	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	3200000	USD
CY2019Q3	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	2500000	USD
CY2019Q3	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	8100000	USD
CY2019Q3	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	22900000	USD
CY2019Q3	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	12500000	USD
CY2019Q3	us-gaap	Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	10400000	USD
CY2019Q3	us-gaap	Capital Lease Obligations Current CapitalLeaseObligationsCurrent	1800000	USD
CY2019Q3	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	19200000	USD
CY2019Q3	us-gaap	Purchase Obligation Due In Next Twelve Months PurchaseObligationDueInNextTwelveMonths	111000000.0	USD
CY2019Q3	us-gaap	Purchase Obligation Due In Second Year PurchaseObligationDueInSecondYear	17200000	USD
CY2019Q3	us-gaap	Purchase Obligation Due In Third Year PurchaseObligationDueInThirdYear	10500000	USD
CY2019Q3	us-gaap	Purchase Obligation Due In Fourth Year PurchaseObligationDueInFourthYear	4700000	USD
CY2019Q3	us-gaap	Purchase Obligation Due In Fifth Year PurchaseObligationDueInFifthYear	2000000.0	USD
CY2019Q3	holx	Purchaseobligationthereafter Purchaseobligationthereafter	1600000	USD
CY2019Q3	us-gaap	Purchase Obligation PurchaseObligation	147000000.0	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	20500000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	17300000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	13300000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	6600000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	5900000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	14600000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	78200000	USD
CY2019	holx	Rent Expense Net Of Sublease Income RentExpenseNetOfSubleaseIncome	23100000	USD
CY2018	holx	Rent Expense Net Of Sublease Income RentExpenseNetOfSubleaseIncome	23100000	USD
CY2017	holx	Rent Expense Net Of Sublease Income RentExpenseNetOfSubleaseIncome	19300000	USD
CY2019	us-gaap	Operating Leases Rent Expense Sublease Rentals1 OperatingLeasesRentExpenseSubleaseRentals1	2700000	USD
CY2018	us-gaap	Operating Leases Rent Expense Sublease Rentals1 OperatingLeasesRentExpenseSubleaseRentals1	2600000	USD
CY2017	us-gaap	Operating Leases Rent Expense Sublease Rentals1 OperatingLeasesRentExpenseSubleaseRentals1	2300000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Receivable Current OperatingLeasesFutureMinimumPaymentsReceivableCurrent	1600000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Receivable In Two Years OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears	600000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Receivable In Three Years OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears	600000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Receivable In Four Years OperatingLeasesFutureMinimumPaymentsReceivableInFourYears	600000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Receivable In Five Years OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears	500000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Receivable Thereafter OperatingLeasesFutureMinimumPaymentsReceivableThereafter	600000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Receivable OperatingLeasesFutureMinimumPaymentsReceivable	4500000	USD
CY2016Q4	holx	Plaintiff Statutory Damages PlaintiffStatutoryDamages	25	USD
CY2019Q3	us-gaap	Litigation Settlement Amount Awarded To Other Party LitigationSettlementAmountAwardedToOtherParty	8500000	USD
	us-gaap	Litigation Settlement Expense LitigationSettlementExpense	9200000	USD
CY2019Q3	us-gaap	Litigation Settlement Amount Awarded To Other Party LitigationSettlementAmountAwardedToOtherParty	8500000	USD
CY2017	holx	Collaboration Agreements Revenue CollaborationAgreementsRevenue	96500000	USD
CY2019	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	5	Segment
CY2019	us-gaap	Revenues Revenues	3367300000	USD
CY2018	us-gaap	Revenues Revenues	3217900000	USD
CY2017	us-gaap	Revenues Revenues	3058800000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	-123800000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	-237900000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	1370200000	USD
CY2019	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	463100000	USD
CY2018	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	480300000	USD
CY2017	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	449200000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	109100000	USD
CY2018	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	105600000	USD
CY2017	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	107600000	USD
CY2019Q3	us-gaap	Assets Assets	6442100000	USD
CY2018Q3	us-gaap	Assets Assets	7230900000	USD
CY2017Q3	us-gaap	Assets Assets	7979600000	USD
CY2019	holx	Percentage Of Revenues PercentageOfRevenues	1.000
CY2018	holx	Percentage Of Revenues PercentageOfRevenues	1.000
CY2017	holx	Percentage Of Revenues PercentageOfRevenues	1.000
CY2017	us-gaap	Defined Benefit Plan Foreign Currency Exchange Rate Changes Benefit Obligation DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation	-600000	USD
CY2019	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	300000	USD
CY2019Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	470900000	USD
CY2018Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	478200000	USD
CY2016Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	472800000	USD
CY2019Q3	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	223400000	USD
CY2018Q3	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	196000000.0	USD
CY2019Q3	holx	Accrued Income And Other Taxes AccruedIncomeAndOtherTaxes	56100000	USD
CY2018Q3	holx	Accrued Income And Other Taxes AccruedIncomeAndOtherTaxes	57200000	USD
CY2019Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	151400000	USD
CY2018Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	182900000	USD
CY2019Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	430900000	USD
CY2018Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	436100000	USD
CY2018	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	300000	USD
CY2019Q3	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	106800000	USD
CY2018Q3	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	92600000	USD
CY2019Q3	us-gaap	Accrued Rent Noncurrent AccruedRentNoncurrent	33700000	USD
CY2018Q3	us-gaap	Accrued Rent Noncurrent AccruedRentNoncurrent	35500000	USD
CY2019Q3	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	10200000	USD
CY2018Q3	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	9900000	USD
CY2019Q3	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	11700000	USD
CY2019	us-gaap	Defined Benefit Plan Benefit Obligation Contributions By Plan Participant DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant		USD
CY2018	us-gaap	Defined Benefit Plan Benefit Obligation Contributions By Plan Participant DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant	0	USD
CY2017	us-gaap	Defined Benefit Plan Benefit Obligation Contributions By Plan Participant DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant	0	USD
CY2019	holx	Defined Benefit Plan Actuarial Net Gains Losses Net Of Tax Amount DefinedBenefitPlanActuarialNetGainsLossesNetOfTaxAmount	-1000000.0	USD
CY2018Q3	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	19600000	USD
CY2019Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	162400000	USD
CY2018Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	157600000	USD
CY2019Q3	us-gaap	Defined Benefit Pension Plan Current And Noncurrent Liabilities DefinedBenefitPensionPlanCurrentAndNoncurrentLiabilities	10000000.0	USD
CY2018Q3	us-gaap	Defined Benefit Pension Plan Current And Noncurrent Liabilities DefinedBenefitPensionPlanCurrentAndNoncurrentLiabilities	9700000	USD
CY2018Q3	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	9700000	USD
CY2017Q3	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	9900000	USD
CY2016Q3	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	11000000.0	USD
CY2019	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	0	USD
CY2018	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	0	USD
CY2017	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	0	USD
CY2019	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	200000	USD
CY2018	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	200000	USD
CY2017	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	100000	USD
CY2018	holx	Defined Benefit Plan Actuarial Net Gains Losses Net Of Tax Amount DefinedBenefitPlanActuarialNetGainsLossesNetOfTaxAmount	-100000	USD
CY2017	holx	Defined Benefit Plan Actuarial Net Gains Losses Net Of Tax Amount DefinedBenefitPlanActuarialNetGainsLossesNetOfTaxAmount	1500000	USD
CY2019	us-gaap	Defined Benefit Plan Foreign Currency Exchange Rate Changes Benefit Obligation DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation	600000	USD
CY2018	us-gaap	Defined Benefit Plan Foreign Currency Exchange Rate Changes Benefit Obligation DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation	200000	USD
CY2019Q3	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets		USD
CY2018Q3	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	0	USD
CY2017Q3	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	0	USD
CY2019Q3	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-10000000.0	USD
CY2018Q3	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-9700000	USD
CY2017	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	300000	USD
CY2019Q3	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	10000000.0	USD
CY2018Q3	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	9700000	USD
CY2017Q3	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	9900000	USD
CY2017Q3	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-9900000	USD
CY2019	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	0	USD
CY2018	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	0	USD
CY2017	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	0	USD
CY2019	holx	Componentsof Net Periodic Benefit Cost Interestcost ComponentsofNetPeriodicBenefitCostInterestcost	200000	USD
CY2018	holx	Componentsof Net Periodic Benefit Cost Interestcost ComponentsofNetPeriodicBenefitCostInterestcost	200000	USD
CY2017	holx	Componentsof Net Periodic Benefit Cost Interestcost ComponentsofNetPeriodicBenefitCostInterestcost	100000	USD
CY2019	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	0	USD
CY2018	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	0	USD
CY2017	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	0	USD
CY2019	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	0	USD
CY2018	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	0	USD
CY2017	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	0	USD
CY2019	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements And Curtailments1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1	-100000	USD
CY2018	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements And Curtailments1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1	-100000	USD
CY2017	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements And Curtailments1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1	-400000	USD
CY2019	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	300000	USD
CY2018	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	300000	USD
CY2017	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	500000	USD
CY2018Q4	us-gaap	Revenues Revenues	830700000	USD
CY2019Q1	us-gaap	Revenues Revenues	818400000	USD
CY2019Q2	us-gaap	Revenues Revenues	852400000	USD
CY2019Q3	us-gaap	Revenues Revenues	865800000	USD
CY2018Q4	us-gaap	Gross Profit GrossProfit	434100000	USD
CY2019Q1	us-gaap	Gross Profit GrossProfit	42400000	USD
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0110
CY2018	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0195
CY2017	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0215
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0
CY2018	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0
CY2017	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0
CY2018	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0
CY2017	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0
CY2019Q3	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	10000000.0	USD
CY2018Q3	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	9700000	USD
CY2019Q3	holx	Projected Benefit Obligation For Long Term Service Awards ProjectedBenefitObligationForLongTermServiceAwards	100000	USD
CY2019Q3	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	300000	USD
CY2019Q3	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	300000	USD
CY2019Q3	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	400000	USD
CY2019Q3	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	400000	USD
CY2019Q3	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	400000	USD
CY2019Q3	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	2000000.0	USD
CY2019Q2	us-gaap	Gross Profit GrossProfit	444800000	USD
CY2019Q3	us-gaap	Gross Profit GrossProfit	249500000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	98600000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	-272600000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	93900000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	-123500000	USD
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.36
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.01
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.35
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.46
CY2017Q4	us-gaap	Revenues Revenues	791100000	USD
CY2018Q1	us-gaap	Revenues Revenues	789300000	USD
CY2018Q2	us-gaap	Revenues Revenues	824000000.0	USD
CY2018Q3	us-gaap	Revenues Revenues	813500000	USD
CY2017Q4	us-gaap	Gross Profit GrossProfit	424500000	USD
CY2018Q1	us-gaap	Gross Profit GrossProfit	415100000	USD
CY2018Q2	us-gaap	Gross Profit GrossProfit	436000000.0	USD
CY2018Q3	us-gaap	Gross Profit GrossProfit	421100000	USD
CY2017Q4	us-gaap	Net Income Loss NetIncomeLoss	406700000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	-681400000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	112900000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	50500000	USD
CY2017Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.45
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-2.46
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.41
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.18
CY2019Q1	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	443800000	USD
CY2019Q3	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	241600000	USD
CY2017Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	329200000	USD
CY2018Q1	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	685700000	USD
CY2018Q1	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	46000000.0	USD
CY2018Q1	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-44900000	USD
CY2018Q3	us-gaap	Litigation Settlement Expense LitigationSettlementExpense	34800000	USD

Files In Submission

Name	View Source	Status
0000859737-19-000026-index-headers.html	Edgar Link	pending
0000859737-19-000026-index.html	Edgar Link	pending
0000859737-19-000026.txt	Edgar Link	pending
0000859737-19-000026-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
holx-20190928.xsd	Edgar Link	pending
holx-20190928_cal.xml	Edgar Link	unprocessable
holx-20190928_def.xml	Edgar Link	unprocessable
holx-20190928_lab.xml	Edgar Link	unprocessable
holx-20190928_pre.xml	Edgar Link	unprocessable
holxq4-2019.htm	Edgar Link	pending
holxq4-2019ex1046.htm	Edgar Link	pending
holxq4-2019ex1047.htm	Edgar Link	pending
holxq4-2019ex1048.htm	Edgar Link	pending
holxq4-2019ex1049.htm	Edgar Link	pending
holxq4-2019ex1050.htm	Edgar Link	pending
holxq4-2019ex1051.htm	Edgar Link	pending
holxq4-2019ex1057.htm	Edgar Link	pending
holxq4-2019ex1058.htm	Edgar Link	pending
holxq4-2019ex1061.htm	Edgar Link	pending
holxq4-2019ex31.htm	Edgar Link	pending
holxq4-2019ex311.htm	Edgar Link	pending
holxq4-2019ex312.htm	Edgar Link	pending
holxq4-2019ex321.htm	Edgar Link	pending
holxq4-2019ex322.htm	Edgar Link	pending
holxq4-2019ex47.htm	Edgar Link	pending
holxq4-2019_htm.xml	Edgar Link	completed
holxq42019ex211.htm	Edgar Link	pending
holxq42019ex231.htm	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R100.htm	Edgar Link	pending
R101.htm	Edgar Link	pending
R102.htm	Edgar Link	pending
R103.htm	Edgar Link	pending
R104.htm	Edgar Link	pending
R105.htm	Edgar Link	pending
R106.htm	Edgar Link	pending
R107.htm	Edgar Link	pending
R108.htm	Edgar Link	pending
R109.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R110.htm	Edgar Link	pending
R111.htm	Edgar Link	pending
R112.htm	Edgar Link	pending
R113.htm	Edgar Link	pending
R114.htm	Edgar Link	pending
R115.htm	Edgar Link	pending
R116.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
R69.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R70.htm	Edgar Link	pending
R71.htm	Edgar Link	pending
R72.htm	Edgar Link	pending
R73.htm	Edgar Link	pending
R74.htm	Edgar Link	pending
R75.htm	Edgar Link	pending
R76.htm	Edgar Link	pending
R77.htm	Edgar Link	pending
R78.htm	Edgar Link	pending
R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R80.htm	Edgar Link	pending
R81.htm	Edgar Link	pending
R82.htm	Edgar Link	pending
R83.htm	Edgar Link	pending
R84.htm	Edgar Link	pending
R85.htm	Edgar Link	pending
R86.htm	Edgar Link	pending
R87.htm	Edgar Link	pending
R88.htm	Edgar Link	pending
R89.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
R90.htm	Edgar Link	pending
R91.htm	Edgar Link	pending
R92.htm	Edgar Link	pending
R93.htm	Edgar Link	pending
R94.htm	Edgar Link	pending
R95.htm	Edgar Link	pending
R96.htm	Edgar Link	pending
R97.htm	Edgar Link	pending
R98.htm	Edgar Link	pending
R99.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending
totalreturnlinegraph.jpg	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$HOLX
HOLOGIC INC Stock $holx

2019 Form 10-K Financial Statement

#000085973719000026 Filed on November 27, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HOLX HOLOGIC INC Stock $holx

2019 Form 10-K Financial Statement

#000085973719000026 Filed on November 27, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HOLX
HOLOGIC INC Stock $holx