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Supplemental Guarantor Condensed Consolidating Financials - Schedule of Supplemental Condensed Consolidating Statement of Operations (Detail) (USD $)
3 Months Ended 6 Months Ended
Mar. 28, 2015
Mar. 29, 2014
Mar. 28, 2015
Mar. 29, 2014
Revenues:        
Product $ 546,400,000us-gaap_SalesRevenueGoodsNet $ 521,100,000us-gaap_SalesRevenueGoodsNet $ 1,093,000,000us-gaap_SalesRevenueGoodsNet $ 1,033,500,000us-gaap_SalesRevenueGoodsNet
Service and other 109,100,000us-gaap_SalesRevenueServicesNet 103,900,000us-gaap_SalesRevenueServicesNet 215,300,000us-gaap_SalesRevenueServicesNet 203,900,000us-gaap_SalesRevenueServicesNet
Revenues 655,500,000us-gaap_Revenues 625,000,000us-gaap_Revenues 1,308,300,000us-gaap_Revenues 1,237,400,000us-gaap_Revenues
Costs of revenues:        
Product 186,700,000us-gaap_CostOfGoodsSold 185,700,000us-gaap_CostOfGoodsSold 373,400,000us-gaap_CostOfGoodsSold 362,600,000us-gaap_CostOfGoodsSold
Amortization of intangible assets 78,600,000us-gaap_CostOfGoodsSoldAmortization 76,900,000us-gaap_CostOfGoodsSoldAmortization 152,500,000us-gaap_CostOfGoodsSoldAmortization 153,500,000us-gaap_CostOfGoodsSoldAmortization
Cost Of Goods Sold Impairment Of Intangible Assets 0holx_CostOfGoodsSoldImpairmentOfIntangibleAssets 26,600,000holx_CostOfGoodsSoldImpairmentOfIntangibleAssets 0holx_CostOfGoodsSoldImpairmentOfIntangibleAssets 26,600,000holx_CostOfGoodsSoldImpairmentOfIntangibleAssets
Service and other 54,200,000us-gaap_CostOfServices 53,700,000us-gaap_CostOfServices 107,800,000us-gaap_CostOfServices 107,000,000us-gaap_CostOfServices
Gross Profit 336,000,000us-gaap_GrossProfit 282,100,000us-gaap_GrossProfit 674,600,000us-gaap_GrossProfit 587,700,000us-gaap_GrossProfit
Operating expenses:        
Research and development 53,300,000us-gaap_ResearchAndDevelopmentExpense 49,900,000us-gaap_ResearchAndDevelopmentExpense 105,200,000us-gaap_ResearchAndDevelopmentExpense 98,600,000us-gaap_ResearchAndDevelopmentExpense
Selling and marketing 83,000,000us-gaap_SellingAndMarketingExpense 78,700,000us-gaap_SellingAndMarketingExpense 169,000,000us-gaap_SellingAndMarketingExpense 161,900,000us-gaap_SellingAndMarketingExpense
General and administrative 60,300,000us-gaap_GeneralAndAdministrativeExpense 62,100,000us-gaap_GeneralAndAdministrativeExpense 121,700,000us-gaap_GeneralAndAdministrativeExpense 129,900,000us-gaap_GeneralAndAdministrativeExpense
Amortization of intangible assets 27,600,000us-gaap_AmortizationOfIntangibleAssets 29,100,000us-gaap_AmortizationOfIntangibleAssets 55,400,000us-gaap_AmortizationOfIntangibleAssets 55,300,000us-gaap_AmortizationOfIntangibleAssets
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) 0us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill 500,000us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill 0us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill 500,000us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
Restructuring and divestiture charges 2,000,000us-gaap_RestructuringCharges 11,600,000us-gaap_RestructuringCharges 10,000,000us-gaap_RestructuringCharges 30,000,000us-gaap_RestructuringCharges
Operating expenses 226,200,000us-gaap_OperatingExpenses 231,900,000us-gaap_OperatingExpenses 461,300,000us-gaap_OperatingExpenses 476,200,000us-gaap_OperatingExpenses
Income from operations 109,800,000us-gaap_OperatingIncomeLoss 50,200,000us-gaap_OperatingIncomeLoss 213,300,000us-gaap_OperatingIncomeLoss 111,500,000us-gaap_OperatingIncomeLoss
Interest income 300,000us-gaap_InvestmentIncomeInterest 100,000us-gaap_InvestmentIncomeInterest 700,000us-gaap_InvestmentIncomeInterest 500,000us-gaap_InvestmentIncomeInterest
Interest expense (49,400,000)us-gaap_InterestExpense (54,400,000)us-gaap_InterestExpense (101,900,000)us-gaap_InterestExpense (115,700,000)us-gaap_InterestExpense
Debt extinguishment loss 0us-gaap_GainsLossesOnExtinguishmentOfDebt (4,400,000)us-gaap_GainsLossesOnExtinguishmentOfDebt (6,700,000)us-gaap_GainsLossesOnExtinguishmentOfDebt (7,400,000)us-gaap_GainsLossesOnExtinguishmentOfDebt
Other expense, net 100,000us-gaap_OtherNonoperatingIncomeExpense (3,300,000)us-gaap_OtherNonoperatingIncomeExpense (500,000)us-gaap_OtherNonoperatingIncomeExpense (2,100,000)us-gaap_OtherNonoperatingIncomeExpense
Income (loss) before income taxes 60,800,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments (11,800,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments 104,900,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments (13,200,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Provision for income taxes 13,000,000us-gaap_IncomeTaxExpenseBenefit 5,000,000us-gaap_IncomeTaxExpenseBenefit 27,900,000us-gaap_IncomeTaxExpenseBenefit 8,900,000us-gaap_IncomeTaxExpenseBenefit
Equity in earnings (losses) of subsidiaries 0holx_EquityInEarningsLossOfSubsidiaries 0holx_EquityInEarningsLossOfSubsidiaries 0holx_EquityInEarningsLossOfSubsidiaries 0holx_EquityInEarningsLossOfSubsidiaries
Net income (loss) 47,800,000us-gaap_NetIncomeLoss (16,800,000)us-gaap_NetIncomeLoss 77,000,000us-gaap_NetIncomeLoss (22,100,000)us-gaap_NetIncomeLoss
Eliminations        
Revenues:        
Product (138,500,000)us-gaap_SalesRevenueGoodsNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(109,400,000)us-gaap_SalesRevenueGoodsNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(269,300,000)us-gaap_SalesRevenueGoodsNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(210,400,000)us-gaap_SalesRevenueGoodsNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Service and other (10,500,000)us-gaap_SalesRevenueServicesNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(14,100,000)us-gaap_SalesRevenueServicesNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(23,000,000)us-gaap_SalesRevenueServicesNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(27,600,000)us-gaap_SalesRevenueServicesNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Revenues (149,000,000)us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(123,500,000)us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(292,300,000)us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(238,000,000)us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Costs of revenues:        
Product (138,500,000)us-gaap_CostOfGoodsSold
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(109,400,000)us-gaap_CostOfGoodsSold
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(269,300,000)us-gaap_CostOfGoodsSold
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(210,400,000)us-gaap_CostOfGoodsSold
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Amortization of intangible assets 0us-gaap_CostOfGoodsSoldAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_CostOfGoodsSoldAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_CostOfGoodsSoldAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_CostOfGoodsSoldAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Cost Of Goods Sold Impairment Of Intangible Assets   0holx_CostOfGoodsSoldImpairmentOfIntangibleAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
  0holx_CostOfGoodsSoldImpairmentOfIntangibleAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Service and other (10,500,000)us-gaap_CostOfServices
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(14,100,000)us-gaap_CostOfServices
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(23,000,000)us-gaap_CostOfServices
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(27,600,000)us-gaap_CostOfServices
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Gross Profit 0us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Operating expenses:        
Research and development 0us-gaap_ResearchAndDevelopmentExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_ResearchAndDevelopmentExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_ResearchAndDevelopmentExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_ResearchAndDevelopmentExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Selling and marketing 0us-gaap_SellingAndMarketingExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_SellingAndMarketingExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_SellingAndMarketingExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_SellingAndMarketingExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
General and administrative 0us-gaap_GeneralAndAdministrativeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_GeneralAndAdministrativeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_GeneralAndAdministrativeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_GeneralAndAdministrativeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Amortization of intangible assets 0us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)   0us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
  0us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Restructuring and divestiture charges 0us-gaap_RestructuringCharges
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_RestructuringCharges
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_RestructuringCharges
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_RestructuringCharges
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Operating expenses 0us-gaap_OperatingExpenses
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_OperatingExpenses
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_OperatingExpenses
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_OperatingExpenses
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Income from operations 0us-gaap_OperatingIncomeLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_OperatingIncomeLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_OperatingIncomeLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_OperatingIncomeLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Interest income (1,100,000)us-gaap_InvestmentIncomeInterest
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(1,200,000)us-gaap_InvestmentIncomeInterest
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(1,300,000)us-gaap_InvestmentIncomeInterest
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(1,400,000)us-gaap_InvestmentIncomeInterest
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Interest expense 1,100,000us-gaap_InterestExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
1,200,000us-gaap_InterestExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
1,300,000us-gaap_InterestExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
1,400,000us-gaap_InterestExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Debt extinguishment loss 0us-gaap_GainsLossesOnExtinguishmentOfDebt
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_GainsLossesOnExtinguishmentOfDebt
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_GainsLossesOnExtinguishmentOfDebt
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_GainsLossesOnExtinguishmentOfDebt
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Other expense, net (200,000)us-gaap_OtherNonoperatingIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_OtherNonoperatingIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(300,000)us-gaap_OtherNonoperatingIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_OtherNonoperatingIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Income (loss) before income taxes (200,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(300,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Provision for income taxes 0us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Equity in earnings (losses) of subsidiaries 145,800,000holx_EquityInEarningsLossOfSubsidiaries
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
13,100,000holx_EquityInEarningsLossOfSubsidiaries
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
179,600,000holx_EquityInEarningsLossOfSubsidiaries
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
3,400,000holx_EquityInEarningsLossOfSubsidiaries
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Net income (loss) 145,600,000us-gaap_NetIncomeLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
13,100,000us-gaap_NetIncomeLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
179,300,000us-gaap_NetIncomeLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
3,400,000us-gaap_NetIncomeLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Parent/Issuer        
Revenues:        
Product 134,500,000us-gaap_SalesRevenueGoodsNet
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
122,900,000us-gaap_SalesRevenueGoodsNet
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
266,100,000us-gaap_SalesRevenueGoodsNet
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
228,400,000us-gaap_SalesRevenueGoodsNet
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Service and other 92,500,000us-gaap_SalesRevenueServicesNet
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
88,600,000us-gaap_SalesRevenueServicesNet
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
183,400,000us-gaap_SalesRevenueServicesNet
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
174,500,000us-gaap_SalesRevenueServicesNet
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Revenues 227,000,000us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
211,500,000us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
449,500,000us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
402,900,000us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Costs of revenues:        
Product 75,600,000us-gaap_CostOfGoodsSold
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
58,000,000us-gaap_CostOfGoodsSold
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
133,900,000us-gaap_CostOfGoodsSold
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
110,900,000us-gaap_CostOfGoodsSold
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Amortization of intangible assets 1,200,000us-gaap_CostOfGoodsSoldAmortization
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
1,400,000us-gaap_CostOfGoodsSoldAmortization
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
2,800,000us-gaap_CostOfGoodsSoldAmortization
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
2,800,000us-gaap_CostOfGoodsSoldAmortization
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Cost Of Goods Sold Impairment Of Intangible Assets   0holx_CostOfGoodsSoldImpairmentOfIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
  0holx_CostOfGoodsSoldImpairmentOfIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Service and other 49,300,000us-gaap_CostOfServices
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
51,100,000us-gaap_CostOfServices
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
84,500,000us-gaap_CostOfServices
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
93,400,000us-gaap_CostOfServices
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Gross Profit 100,900,000us-gaap_GrossProfit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
101,000,000us-gaap_GrossProfit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
228,300,000us-gaap_GrossProfit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
195,800,000us-gaap_GrossProfit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Operating expenses:        
Research and development 9,700,000us-gaap_ResearchAndDevelopmentExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
7,700,000us-gaap_ResearchAndDevelopmentExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
18,000,000us-gaap_ResearchAndDevelopmentExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
15,200,000us-gaap_ResearchAndDevelopmentExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Selling and marketing 23,100,000us-gaap_SellingAndMarketingExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
17,900,000us-gaap_SellingAndMarketingExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
47,400,000us-gaap_SellingAndMarketingExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
35,800,000us-gaap_SellingAndMarketingExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
General and administrative 17,500,000us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
15,100,000us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
34,800,000us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
29,800,000us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Amortization of intangible assets 200,000us-gaap_AmortizationOfIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
1,100,000us-gaap_AmortizationOfIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
900,000us-gaap_AmortizationOfIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
1,900,000us-gaap_AmortizationOfIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)   0us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
  0us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Restructuring and divestiture charges (400,000)us-gaap_RestructuringCharges
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
1,700,000us-gaap_RestructuringCharges
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
1,400,000us-gaap_RestructuringCharges
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
6,600,000us-gaap_RestructuringCharges
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Operating expenses 50,100,000us-gaap_OperatingExpenses
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
43,500,000us-gaap_OperatingExpenses
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
102,500,000us-gaap_OperatingExpenses
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
89,300,000us-gaap_OperatingExpenses
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Income from operations 50,800,000us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
57,500,000us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
125,800,000us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
106,500,000us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Interest income 1,100,000us-gaap_InvestmentIncomeInterest
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
100,000us-gaap_InvestmentIncomeInterest
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
400,000us-gaap_InvestmentIncomeInterest
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
200,000us-gaap_InvestmentIncomeInterest
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Interest expense (48,500,000)us-gaap_InterestExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(54,700,000)us-gaap_InterestExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(100,400,000)us-gaap_InterestExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(115,300,000)us-gaap_InterestExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Debt extinguishment loss 0us-gaap_GainsLossesOnExtinguishmentOfDebt
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(4,400,000)us-gaap_GainsLossesOnExtinguishmentOfDebt
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(6,700,000)us-gaap_GainsLossesOnExtinguishmentOfDebt
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(7,400,000)us-gaap_GainsLossesOnExtinguishmentOfDebt
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Other expense, net 199,800,000us-gaap_OtherNonoperatingIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(2,900,000)us-gaap_OtherNonoperatingIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
250,500,000us-gaap_OtherNonoperatingIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
6,600,000us-gaap_OtherNonoperatingIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Income (loss) before income taxes 203,200,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(4,400,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
269,600,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(9,400,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Provision for income taxes 8,600,000us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(1,700,000)us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
10,000,000us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(1,800,000)us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Equity in earnings (losses) of subsidiaries (146,800,000)holx_EquityInEarningsLossOfSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(14,100,000)holx_EquityInEarningsLossOfSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(182,600,000)holx_EquityInEarningsLossOfSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(14,500,000)holx_EquityInEarningsLossOfSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Net income (loss) 47,800,000us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(16,800,000)us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
77,000,000us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(22,100,000)us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Guarantor Subsidiaries        
Revenues:        
Product 437,700,000us-gaap_SalesRevenueGoodsNet
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
386,000,000us-gaap_SalesRevenueGoodsNet
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
863,500,000us-gaap_SalesRevenueGoodsNet
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
767,500,000us-gaap_SalesRevenueGoodsNet
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Service and other 14,300,000us-gaap_SalesRevenueServicesNet
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
17,100,000us-gaap_SalesRevenueServicesNet
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
30,000,000us-gaap_SalesRevenueServicesNet
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
32,900,000us-gaap_SalesRevenueServicesNet
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Revenues 452,000,000us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
403,100,000us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
893,500,000us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
800,400,000us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Costs of revenues:        
Product 173,300,000us-gaap_CostOfGoodsSold
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
145,700,000us-gaap_CostOfGoodsSold
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
344,200,000us-gaap_CostOfGoodsSold
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
284,400,000us-gaap_CostOfGoodsSold
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Amortization of intangible assets 77,300,000us-gaap_CostOfGoodsSoldAmortization
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
74,600,000us-gaap_CostOfGoodsSoldAmortization
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
149,500,000us-gaap_CostOfGoodsSoldAmortization
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
148,700,000us-gaap_CostOfGoodsSoldAmortization
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Cost Of Goods Sold Impairment Of Intangible Assets   0holx_CostOfGoodsSoldImpairmentOfIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
  0holx_CostOfGoodsSoldImpairmentOfIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Service and other 14,500,000us-gaap_CostOfServices
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
13,900,000us-gaap_CostOfServices
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
30,600,000us-gaap_CostOfServices
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
21,500,000us-gaap_CostOfServices
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Gross Profit 186,900,000us-gaap_GrossProfit
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
168,900,000us-gaap_GrossProfit
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
369,200,000us-gaap_GrossProfit
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
345,800,000us-gaap_GrossProfit
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Operating expenses:        
Research and development 41,900,000us-gaap_ResearchAndDevelopmentExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
40,000,000us-gaap_ResearchAndDevelopmentExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
83,800,000us-gaap_ResearchAndDevelopmentExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
78,900,000us-gaap_ResearchAndDevelopmentExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Selling and marketing 42,000,000us-gaap_SellingAndMarketingExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
40,500,000us-gaap_SellingAndMarketingExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
82,600,000us-gaap_SellingAndMarketingExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
83,300,000us-gaap_SellingAndMarketingExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
General and administrative 35,400,000us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
35,600,000us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
70,700,000us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
77,000,000us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Amortization of intangible assets 26,200,000us-gaap_AmortizationOfIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
26,900,000us-gaap_AmortizationOfIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
52,300,000us-gaap_AmortizationOfIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
51,000,000us-gaap_AmortizationOfIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)   0us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
  0us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Restructuring and divestiture charges 100,000us-gaap_RestructuringCharges
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
2,300,000us-gaap_RestructuringCharges
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
600,000us-gaap_RestructuringCharges
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
12,100,000us-gaap_RestructuringCharges
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Operating expenses 145,600,000us-gaap_OperatingExpenses
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
145,300,000us-gaap_OperatingExpenses
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
290,000,000us-gaap_OperatingExpenses
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
302,300,000us-gaap_OperatingExpenses
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Income from operations 41,300,000us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
23,600,000us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
79,200,000us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
43,500,000us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Interest income 0us-gaap_InvestmentIncomeInterest
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
900,000us-gaap_InvestmentIncomeInterest
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
1,200,000us-gaap_InvestmentIncomeInterest
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
1,200,000us-gaap_InvestmentIncomeInterest
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Interest expense (1,400,000)us-gaap_InterestExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(300,000)us-gaap_InterestExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(1,600,000)us-gaap_InterestExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(600,000)us-gaap_InterestExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Debt extinguishment loss 0us-gaap_GainsLossesOnExtinguishmentOfDebt
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_GainsLossesOnExtinguishmentOfDebt
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_GainsLossesOnExtinguishmentOfDebt
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_GainsLossesOnExtinguishmentOfDebt
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Other expense, net (200,100,000)us-gaap_OtherNonoperatingIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(200,000)us-gaap_OtherNonoperatingIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(251,400,000)us-gaap_OtherNonoperatingIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(9,500,000)us-gaap_OtherNonoperatingIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Income (loss) before income taxes (160,200,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
24,000,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(172,600,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
34,600,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Provision for income taxes 3,400,000us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
4,600,000us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
15,700,000us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
6,200,000us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Equity in earnings (losses) of subsidiaries 1,000,000holx_EquityInEarningsLossOfSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
1,000,000holx_EquityInEarningsLossOfSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
3,000,000holx_EquityInEarningsLossOfSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
11,100,000holx_EquityInEarningsLossOfSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Net income (loss) (162,600,000)us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
20,400,000us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(185,300,000)us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
39,500,000us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Non-Guarantor Subsidiaries        
Revenues:        
Product 112,700,000us-gaap_SalesRevenueGoodsNet
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
121,600,000us-gaap_SalesRevenueGoodsNet
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
232,700,000us-gaap_SalesRevenueGoodsNet
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
248,000,000us-gaap_SalesRevenueGoodsNet
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Service and other 12,800,000us-gaap_SalesRevenueServicesNet
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
12,300,000us-gaap_SalesRevenueServicesNet
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
24,900,000us-gaap_SalesRevenueServicesNet
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
24,100,000us-gaap_SalesRevenueServicesNet
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Revenues 125,500,000us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
133,900,000us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
257,600,000us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
272,100,000us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Costs of revenues:        
Product 76,300,000us-gaap_CostOfGoodsSold
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
91,400,000us-gaap_CostOfGoodsSold
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
164,600,000us-gaap_CostOfGoodsSold
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
177,700,000us-gaap_CostOfGoodsSold
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Amortization of intangible assets 100,000us-gaap_CostOfGoodsSoldAmortization
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
900,000us-gaap_CostOfGoodsSoldAmortization
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
200,000us-gaap_CostOfGoodsSoldAmortization
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
2,000,000us-gaap_CostOfGoodsSoldAmortization
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Cost Of Goods Sold Impairment Of Intangible Assets   26,600,000holx_CostOfGoodsSoldImpairmentOfIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
  26,600,000holx_CostOfGoodsSoldImpairmentOfIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Service and other 900,000us-gaap_CostOfServices
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
2,800,000us-gaap_CostOfServices
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
15,700,000us-gaap_CostOfServices
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
19,700,000us-gaap_CostOfServices
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Gross Profit 48,200,000us-gaap_GrossProfit
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
12,200,000us-gaap_GrossProfit
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
77,100,000us-gaap_GrossProfit
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
46,100,000us-gaap_GrossProfit
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Operating expenses:        
Research and development 1,700,000us-gaap_ResearchAndDevelopmentExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
2,200,000us-gaap_ResearchAndDevelopmentExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
3,400,000us-gaap_ResearchAndDevelopmentExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
4,500,000us-gaap_ResearchAndDevelopmentExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Selling and marketing 17,900,000us-gaap_SellingAndMarketingExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
20,300,000us-gaap_SellingAndMarketingExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
39,000,000us-gaap_SellingAndMarketingExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
42,800,000us-gaap_SellingAndMarketingExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
General and administrative 7,400,000us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
11,400,000us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
16,200,000us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
23,100,000us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Amortization of intangible assets 1,200,000us-gaap_AmortizationOfIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
1,100,000us-gaap_AmortizationOfIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
2,200,000us-gaap_AmortizationOfIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
2,400,000us-gaap_AmortizationOfIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)   500,000us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
  500,000us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Restructuring and divestiture charges 2,300,000us-gaap_RestructuringCharges
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
7,600,000us-gaap_RestructuringCharges
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
8,000,000us-gaap_RestructuringCharges
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
11,300,000us-gaap_RestructuringCharges
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Operating expenses 30,500,000us-gaap_OperatingExpenses
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
43,100,000us-gaap_OperatingExpenses
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
68,800,000us-gaap_OperatingExpenses
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
84,600,000us-gaap_OperatingExpenses
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Income from operations 17,700,000us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(30,900,000)us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
8,300,000us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(38,500,000)us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Interest income 300,000us-gaap_InvestmentIncomeInterest
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
300,000us-gaap_InvestmentIncomeInterest
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
400,000us-gaap_InvestmentIncomeInterest
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
500,000us-gaap_InvestmentIncomeInterest
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Interest expense (600,000)us-gaap_InterestExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(600,000)us-gaap_InterestExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(1,200,000)us-gaap_InterestExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(1,200,000)us-gaap_InterestExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Debt extinguishment loss 0us-gaap_GainsLossesOnExtinguishmentOfDebt
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0us-gaap_GainsLossesOnExtinguishmentOfDebt
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0us-gaap_GainsLossesOnExtinguishmentOfDebt
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0us-gaap_GainsLossesOnExtinguishmentOfDebt
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Other expense, net 600,000us-gaap_OtherNonoperatingIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(200,000)us-gaap_OtherNonoperatingIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
700,000us-gaap_OtherNonoperatingIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
800,000us-gaap_OtherNonoperatingIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Income (loss) before income taxes 18,000,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(31,400,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
8,200,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(38,400,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Provision for income taxes 1,000,000us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
2,100,000us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
2,200,000us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
4,500,000us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Equity in earnings (losses) of subsidiaries 0holx_EquityInEarningsLossOfSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0holx_EquityInEarningsLossOfSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0holx_EquityInEarningsLossOfSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0holx_EquityInEarningsLossOfSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Net income (loss) $ 17,000,000us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
$ (33,500,000)us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
$ 6,000,000us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
$ (42,900,000)us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember