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Restructuring and Divestiture Charges - Additional Information (Detail) (USD $) | 3 Months Ended | 12 Months Ended | 3 Months Ended
--- | --- | --- | ---
Sep. 27, 2014 | Dec. 27, 2014 | Sep. 27, 2014 | Dec. 28, 2013 | Mar. 29, 2014
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Estimated aggregate severance charges |  | $ 1,800,000 us-gaap_RestructuringAndRelatedCostExpectedCost1 |  |  |
Gain (Loss) on Disposition of Business | 5,300,000 us-gaap_GainLossOnSaleOfBusiness |  |  |  |
Restructuring | Fiscal 2015 Charges |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Severance charges |  | 2,500,000 us-gaap_SeveranceCosts1 / us-gaap_IncomeStatementLocationAxis = us-gaap_RestructuringChargesMember / us-gaap_RestructuringPlanAxis = holx_Fiscal2015ChargesMember |  |  |
Share Based Compensation Expense Included Other Restructuring Costs |  | 100,000 holx_ShareBasedCompensationExpenseIncludedOtherRestructuringCosts / us-gaap_IncomeStatementLocationAxis = us-gaap_RestructuringChargesMember / us-gaap_RestructuringPlanAxis = holx_Fiscal2015ChargesMember |  |  |
Workforce reductions |  | 7,300,000 holx_ReductionOfWorkforceExpenses / us-gaap_IncomeStatementLocationAxis = us-gaap_RestructuringChargesMember / us-gaap_RestructuringPlanAxis = holx_Fiscal2015ChargesMember |  |  |
Facility closure costs |  | 700,000 holx_FacilityClosureCosts / us-gaap_IncomeStatementLocationAxis = us-gaap_RestructuringChargesMember / us-gaap_RestructuringPlanAxis = holx_Fiscal2015ChargesMember |  |  |
Restructuring | Fiscal 2014 Charges |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Workforce reductions |  |  | 42,200,000 holx_ReductionOfWorkforceExpenses / us-gaap_IncomeStatementLocationAxis = us-gaap_RestructuringChargesMember / us-gaap_RestructuringPlanAxis = holx_YearTwoThousandFourteenMember |  |
Facility closure costs |  |  | 600,000 holx_FacilityClosureCosts / us-gaap_IncomeStatementLocationAxis = us-gaap_RestructuringChargesMember / us-gaap_RestructuringPlanAxis = holx_YearTwoThousandFourteenMember |  |
Non-cash impairment charge |  |  | 3,100,000 us-gaap_RestructuringCostsAndAssetImpairmentCharges / us-gaap_IncomeStatementLocationAxis = us-gaap_RestructuringChargesMember / us-gaap_RestructuringPlanAxis = holx_YearTwoThousandFourteenMember |  |
Consolidation of Diagnostics Operations | Molecular Diagnostics Operations |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Severance and benefits and facility closure costs |  | 500,000 holx_Severanceandbenefitsandfacilityclosurecosts / us-gaap_RestructuringCostAndReserveAxis = holx_ConsolidationOfDiagnosticsOperationsMember / us-gaap_RestructuringPlanAxis = holx_MolecularDiagnosticsOperationsMember |  |  |
Severance charges |  |  | 3,000,000 us-gaap_SeveranceCosts1 / us-gaap_RestructuringCostAndReserveAxis = holx_ConsolidationOfDiagnosticsOperationsMember / us-gaap_RestructuringPlanAxis = holx_MolecularDiagnosticsOperationsMember | 800,000 us-gaap_SeveranceCosts1 / us-gaap_RestructuringCostAndReserveAxis = holx_ConsolidationOfDiagnosticsOperationsMember / us-gaap_RestructuringPlanAxis = holx_MolecularDiagnosticsOperationsMember |
Consolidation of Diagnostics Operations | Restructuring | Fiscal 2015 Charges |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Workforce reductions |  | 100,000 holx_ReductionOfWorkforceExpenses / us-gaap_IncomeStatementLocationAxis = us-gaap_RestructuringChargesMember / us-gaap_RestructuringCostAndReserveAxis = holx_ConsolidationOfDiagnosticsOperationsMember / us-gaap_RestructuringPlanAxis = holx_Fiscal2015ChargesMember |  |  |
Facility closure costs |  | 400,000 holx_FacilityClosureCosts / us-gaap_IncomeStatementLocationAxis = us-gaap_RestructuringChargesMember / us-gaap_RestructuringCostAndReserveAxis = holx_ConsolidationOfDiagnosticsOperationsMember / us-gaap_RestructuringPlanAxis = holx_Fiscal2015ChargesMember |  |  |
Consolidation of Diagnostics Operations | Restructuring | Fiscal 2014 Charges |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Workforce reductions |  |  | 2,900,000 holx_ReductionOfWorkforceExpenses / us-gaap_IncomeStatementLocationAxis = us-gaap_RestructuringChargesMember / us-gaap_RestructuringCostAndReserveAxis = holx_ConsolidationOfDiagnosticsOperationsMember / us-gaap_RestructuringPlanAxis = holx_YearTwoThousandFourteenMember |  |
Facility closure costs |  |  | 0 holx_FacilityClosureCosts / us-gaap_IncomeStatementLocationAxis = us-gaap_RestructuringChargesMember / us-gaap_RestructuringCostAndReserveAxis = holx_ConsolidationOfDiagnosticsOperationsMember / us-gaap_RestructuringPlanAxis = holx_YearTwoThousandFourteenMember |  |
Non-cash impairment charge |  |  | 0 us-gaap_RestructuringCostsAndAssetImpairmentCharges / us-gaap_IncomeStatementLocationAxis = us-gaap_RestructuringChargesMember / us-gaap_RestructuringCostAndReserveAxis = holx_ConsolidationOfDiagnosticsOperationsMember / us-gaap_RestructuringPlanAxis = holx_YearTwoThousandFourteenMember |  |
Fiscal 2014 Actions |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Severance charges |  |  | 16,600,000 us-gaap_SeveranceCosts1 / us-gaap_RestructuringCostAndReserveAxis = holx_RestructuringActionTwoThousandFourteenMember | 6,300,000 us-gaap_SeveranceCosts1 / us-gaap_RestructuringCostAndReserveAxis = holx_RestructuringActionTwoThousandFourteenMember |
Compensation charges |  |  | 1,800,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_RestructuringCostAndReserveAxis = holx_RestructuringActionTwoThousandFourteenMember | 400,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_RestructuringCostAndReserveAxis = holx_RestructuringActionTwoThousandFourteenMember |
Fiscal 2014 Actions | Jack Cumming |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Severance charges |  |  |  | 6,600,000 us-gaap_SeveranceCosts1 / us-gaap_RestructuringCostAndReserveAxis = holx_RestructuringActionTwoThousandFourteenMember / us-gaap_TitleOfIndividualAxis = us-gaap_PresidentMember |
Compensation charges |  |  |  | 4,400,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_RestructuringCostAndReserveAxis = holx_RestructuringActionTwoThousandFourteenMember / us-gaap_TitleOfIndividualAxis = us-gaap_PresidentMember |
Fiscal 2014 Actions | Restructuring | Fiscal 2015 Charges |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Workforce reductions |  | 4,500,000 holx_ReductionOfWorkforceExpenses / us-gaap_IncomeStatementLocationAxis = us-gaap_RestructuringChargesMember / us-gaap_RestructuringCostAndReserveAxis = holx_RestructuringActionTwoThousandFourteenMember / us-gaap_RestructuringPlanAxis = holx_Fiscal2015ChargesMember |  |  |
Facility closure costs |  | 200,000 holx_FacilityClosureCosts / us-gaap_IncomeStatementLocationAxis = us-gaap_RestructuringChargesMember / us-gaap_RestructuringCostAndReserveAxis = holx_RestructuringActionTwoThousandFourteenMember / us-gaap_RestructuringPlanAxis = holx_Fiscal2015ChargesMember |  |  |
Fiscal 2014 Actions | Restructuring | Fiscal 2014 Charges |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Workforce reductions |  |  | 29,500,000 holx_ReductionOfWorkforceExpenses / us-gaap_IncomeStatementLocationAxis = us-gaap_RestructuringChargesMember / us-gaap_RestructuringCostAndReserveAxis = holx_RestructuringActionTwoThousandFourteenMember / us-gaap_RestructuringPlanAxis = holx_YearTwoThousandFourteenMember |  |
Facility closure costs |  |  | 0 holx_FacilityClosureCosts / us-gaap_IncomeStatementLocationAxis = us-gaap_RestructuringChargesMember / us-gaap_RestructuringCostAndReserveAxis = holx_RestructuringActionTwoThousandFourteenMember / us-gaap_RestructuringPlanAxis = holx_YearTwoThousandFourteenMember |  |
Non-cash impairment charge |  |  | 0 us-gaap_RestructuringCostsAndAssetImpairmentCharges / us-gaap_IncomeStatementLocationAxis = us-gaap_RestructuringChargesMember / us-gaap_RestructuringCostAndReserveAxis = holx_RestructuringActionTwoThousandFourteenMember / us-gaap_RestructuringPlanAxis = holx_YearTwoThousandFourteenMember |  |
Other Operating Cost Reductions |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Severance charges |  |  | 8,700,000 us-gaap_SeveranceCosts1 / us-gaap_RestructuringCostAndReserveAxis = holx_OtherOperatingCostReductionsMember |  | 0 us-gaap_SeveranceCosts1 / us-gaap_RestructuringCostAndReserveAxis = holx_OtherOperatingCostReductionsMember
Estimated aggregate severance charges |  |  |  | 9,500,000 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RestructuringCostAndReserveAxis = holx_OtherOperatingCostReductionsMember |
Number of employees affected for severance benefits |  |  |  | 95 us-gaap_RestructuringAndRelatedCostExpectedNumberOfPositionsEliminated / us-gaap_RestructuringCostAndReserveAxis = holx_OtherOperatingCostReductionsMember |
Other Operating Cost Reductions | Restructuring | Fiscal 2015 Charges |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Severance and benefits and facility closure costs |  | 300,000 holx_Severanceandbenefitsandfacilityclosurecosts / us-gaap_IncomeStatementLocationAxis = us-gaap_RestructuringChargesMember / us-gaap_RestructuringCostAndReserveAxis = holx_OtherOperatingCostReductionsMember / us-gaap_RestructuringPlanAxis = holx_Fiscal2015ChargesMember |  |  |
Workforce reductions |  | 200,000 holx_ReductionOfWorkforceExpenses / us-gaap_IncomeStatementLocationAxis = us-gaap_RestructuringChargesMember / us-gaap_RestructuringCostAndReserveAxis = holx_OtherOperatingCostReductionsMember / us-gaap_RestructuringPlanAxis = holx_Fiscal2015ChargesMember |  |  |
Facility closure costs |  | 100,000 holx_FacilityClosureCosts / us-gaap_IncomeStatementLocationAxis = us-gaap_RestructuringChargesMember / us-gaap_RestructuringCostAndReserveAxis = holx_OtherOperatingCostReductionsMember / us-gaap_RestructuringPlanAxis = holx_Fiscal2015ChargesMember |  |  |
Other Operating Cost Reductions | Restructuring | Fiscal 2014 Charges |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Workforce reductions |  |  | 9,800,000 holx_ReductionOfWorkforceExpenses / us-gaap_IncomeStatementLocationAxis = us-gaap_RestructuringChargesMember / us-gaap_RestructuringCostAndReserveAxis = holx_OtherOperatingCostReductionsMember / us-gaap_RestructuringPlanAxis = holx_YearTwoThousandFourteenMember |  |
Facility closure costs |  |  | 600,000 holx_FacilityClosureCosts / us-gaap_IncomeStatementLocationAxis = us-gaap_RestructuringChargesMember / us-gaap_RestructuringCostAndReserveAxis = holx_OtherOperatingCostReductionsMember / us-gaap_RestructuringPlanAxis = holx_YearTwoThousandFourteenMember |  |
Non-cash impairment charge |  |  | $ 3,100,000 us-gaap_RestructuringCostsAndAssetImpairmentCharges / us-gaap_IncomeStatementLocationAxis = us-gaap_RestructuringChargesMember / us-gaap_RestructuringCostAndReserveAxis = holx_OtherOperatingCostReductionsMember / us-gaap_RestructuringPlanAxis = holx_YearTwoThousandFourteenMember | $ 3,100,000 us-gaap_RestructuringCostsAndAssetImpairmentCharges / us-gaap_IncomeStatementLocationAxis = us-gaap_RestructuringChargesMember / us-gaap_RestructuringCostAndReserveAxis = holx_OtherOperatingCostReductionsMember / us-gaap_RestructuringPlanAxis = holx_YearTwoThousandFourteenMember |

X
- Definition Represents charges incurred to close or restructure a facility in connection with an exit or disposal activity. Such costs include clean-up costs and lease obligations. Costs are recorded as the activities are incurred except for lease obligation charges, which are recorded upon termination of the lease obligation or at the cease use date. + References No definition available. + Details
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- Definition Represents severance and related benefit charges for the termination of employees under an exit or disposal activity. Charges are recorded either as one-time termination benefits, which are recognized ratable over the required service period to receive such benefit, or under an ongoing benefit plan arrangement once the charge is probable and reasonably estimable. + References No definition available. + Details
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- Definition severance and benefits and facility closure costs + References No definition available. + Details
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- Definition Share based compensation expense included other restructuring costs. + References No definition available. + Details
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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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- Definition Gain (loss) from sale or disposal of an organization or integrated set of activities (for example, but not limited to, a partnership or corporation) engaged in providing a product or service in a commercial, industrial, or professional environment. + References No definition available. + Details
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- Definition Amount expected to be recognized in earnings for the specified restructuring cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 + Details
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- Definition The expected number of positions to be eliminated as a result of restructuring activities. + References No definition available. + Details
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- Definition Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan and expenses resulting from the write-down of assets. Excludes expenses related to a business combination, a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(10) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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