XML 68 R84.htm IDEA: XBRL DOCUMENT
v3.19.3

Income Taxes - Additional Information (Detail) - USD ($) | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jan. 31, 2018 | Dec. 29, 2018 | Dec. 30, 2017 | Sep. 28, 2019 | Sep. 29, 2018
Income Taxes [Line Items] |  |  |  |  |
Tax Cuts and Jobs Act measurement period adjustment |  | $ 5,000,000.0 |  |  |
Tax benefit as result of Tax Cuts and Jobs Act |  | 341,200,000 |  |  |
Provisional estimate of tax benefit as result of Tax Cuts and Jobs Act |  |  |  |  | $ 346,200,000
Decrease in valuation allowance |  |  |  | $ (35,200,000) |
Federal net operating loss expected to be expired unutilized |  |  |  | 4,500,000 |
State net operating loss expected to be expired unutilized |  |  |  | 74,600,000 |
Foreign net operating loss expected to be expired unutilized |  |  |  | 46,600,000 |
Gross unrecognized tax benefits, excluding interest |  |  |  | 101,600,000 | 89,500,000
Unrecognized tax benefit that would impact effective tax rate |  |  |  | 87,300,000 | 79,000,000.0
Change in gross unrecognized tax benefits |  |  |  | 12,100,000 |
Interest accrued on unrecognized tax benefits |  |  |  | 11,100,000 | 9,000,000.0
Income tax penalties accrued |  |  |  | 0 |
Payments for other taxes |  |  |  | 1,700,000 |
Recognized tax benefit due to reversal of unrecognized tax benefit |  |  |  | 10,900,000 |
Reduction in deferred tax liability related to the Tax Cuts and Jobs Act |  | $ 341,200,000 |  |  |
Provisional estimate of deduction in deferred tax liability related to the Tax Cuts and Jobs Ac |  |  |  |  | $ 346,400,000
Increase in deferred tax assets resulting from adoption of ASU 2016-16 |  |  |  | 2,900,000 |
Decease in accumulated deficit resulting from adoption of ASU 2016-16 |  |  |  | 2,500,000 |
Decease to prepaid taxes resulting from adoption of ASU 2016-16 |  |  |  | 400,000 |
Increase to income tax expense adoption of ASU 2016-16 |  |  |  | 27,800,000 |
Decrease in deferred tax liabilities due to ASU 2016-16 |  |  |  | 37,700,000 |
Increase to Net Income resulted from adoption of ASU 2016-16 |  |  |  | $ 9,900,000 |
Increase to Earnings per Share resulted from adoption of ASU 2016-16 |  |  |  | $ 0.04 |
Non-income tax loss |  |  |  | $ 35,600,000 |
Effective Income Tax Rate Reconciliation, Tax Settlement, State and Local, Amount | $ 11,000,000.0 |  |  |  |
General and Administrative Expense |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Non-income tax loss |  |  | $ (4,000,000.0) |  |
Income tax refund |  |  |  | 12,400,000 |
Net Operating Losses Carryforwards |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Amount with unlimited carry forward periods |  |  |  | 36,800,000 |
Tax Credit Carryforward |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Amount with unlimited carry forward periods |  |  |  | 3,300,000 |
Maximum |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Decrease in unrecognized tax benefits is reasonably possible |  |  |  | 13,400,000 |
Domestic Tax Authority |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Net operating losses |  |  |  | 29,300,000 |
Credit carry forwards |  |  |  | 5,000,000.0 |
State and Local Jurisdiction |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Net operating losses |  |  |  | 31,100,000 |
Credit carry forwards |  |  |  | 10,400,000 |
Foreign Tax Authority |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Net operating losses |  |  |  | 37,600,000 |
Credit carry forwards |  |  |  | $ 1,200,000 |

X
- Definition Decease in accumulated deficit resulting from adoption of ASCU 2016-16 + References No definition available. + Details
Name: | holx_DeceaseinaccumulateddeficitresultingfromadoptionofASCU201616
Namespace Prefix: | holx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Decease to prepaid taxes resulting from adoption of ASCU 2016-16 + References No definition available. + Details
Name: | holx_DeceasetoprepaidtaxesresultingfromadoptionofASCU201616
Namespace Prefix: | holx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Decrease in deferred tax liabilities due to ASC 2016-16 + References No definition available. + Details
Name: | holx_DecreaseindeferredtaxliabilitiesduetoASC201616
Namespace Prefix: | holx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of federal net operating losses the company believes will expire unutilized. + References No definition available. + Details
Name: | holx_DeferredTaxAssetsOperatingLossCarryForwardsThatWillExpireUnutilizedFederal
Namespace Prefix: | holx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Deferred Tax Assets Operating Loss Carry Forwards That Will Expire Unutilized Foreign + References No definition available. + Details
Name: | holx_DeferredTaxAssetsOperatingLossCarryForwardsThatWillExpireUnutilizedForeign
Namespace Prefix: | holx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of state net operating losses the company believes will expire unutilized. + References No definition available. + Details
Name: | holx_DeferredTaxAssetsOperatingLossCarryForwardsThatWillExpireUnutilizedState
Namespace Prefix: | holx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the total unrecognized tax benefits, including interest, that if recognized would result in a reduction to the effective tax rate. + References No definition available. + Details
Name: | holx_GrossUnrecognizedTaxBenefits
Namespace Prefix: | holx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Income Taxes [Line Items] + References No definition available. + Details
Name: | holx_IncomeTaxesLineItems
Namespace Prefix: | holx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Increase in deferred tax assets resulting from adoption of ASCU 2016-16 + References No definition available. + Details
Name: | holx_IncreaseindeferredtaxassetsresultingfromadoptionofASCU201616
Namespace Prefix: | holx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Increase to Earnings per Share resulted from adoption of ASC 2016-16 + References No definition available. + Details
Name: | holx_IncreasetoEarningsperShareresultedfromadoptionofASC201616
Namespace Prefix: | holx_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Increase to Net Income resulted from adoption of ASU 2016-16 + References No definition available. + Details
Name: | holx_IncreasetoNetIncomeresultedfromadoptionofASU201616
Namespace Prefix: | holx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Increase to income tax expense adoption of ASU 2016-16 + References No definition available. + Details
Name: | holx_IncreasetoincometaxexpenseadoptionofASU201616
Namespace Prefix: | holx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Net operating loss and tax credit carry forwards with unlimited expiration period. + References No definition available. + Details
Name: | holx_NetOperatingLossAndTaxCreditCarryforwardsWithUnlimitedExpirationPeriod
Namespace Prefix: | holx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Non-Income Tax Loss + References No definition available. + Details
Name: | holx_NonIncomeTaxLoss
Namespace Prefix: | holx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Recognized Tax Benefit due to reversal of unrecognized tax benefit + References No definition available. + Details
Name: | holx_RecognizedTaxBenefitduetoreversalofunrecognizedtaxbenefit
Namespace Prefix: | holx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Tax Cuts And Jobs Act, Incomplete Accounting, Provisional Income Tax Expense (Benefit) + References No definition available. + Details
Name: | holx_TaxCutsAndJobsActIncompleteAccountingProvisionalIncomeTaxExpenseBenefit
Namespace Prefix: | holx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Tax Cuts And Jobs Act, Incomplete Accounting, Provisional Reduction In Deferred Tax Liability + References No definition available. + Details
Name: | holx_TaxCutsAndJobsActIncompleteAccountingProvisionalReductionInDeferredTaxLiability
Namespace Prefix: | holx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Tax Cuts And Jobs Act, Measurement Period Adjustment, Income Tax Expense (Benefit) + References No definition available. + Details
Name: | holx_TaxCutsAndJobsActMeasurementPeriodAdjustmentIncomeTaxExpenseBenefit
Namespace Prefix: | holx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Tax Cuts And Jobs Act Of 2017, Income Tax Expense (Benefit) + References No definition available. + Details
Name: | holx_TaxCutsAndJobsActOf2017IncomeTaxExpenseBenefit
Namespace Prefix: | holx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Tax Cuts and Jobs Act, Reduction in Deferred Tax Liability + References No definition available. + Details
Name: | holx_TaxCutsAndJobsActReductionInDeferredTaxLiability
Namespace Prefix: | holx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d)(3) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
Name: | us-gaap_DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of the additional liability or refund received or expected based on a final settlement with a taxing authority. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (3) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
Name: | us-gaap_IncomeTaxExaminationLiabilityRefundAdjustmentFromSettlementWithTaxingAuthority
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax settlement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 + Details
Name: | us-gaap_IncomeTaxReconciliationTaxSettlementsStateAndLocal
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319 + Details
Name: | us-gaap_OperatingLossCarryforwards
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of cash outflow for taxes classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3536-108585 + Details
Name: | us-gaap_PaymentsForOtherTaxes
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319 + Details
Name: | us-gaap_TaxCreditCarryforwardAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of statutory penalties accrued for a tax position claimed or expected to be claimed by the entity, in its tax return. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
Name: | us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of interest expense accrued for an underpayment of income taxes. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
Name: | us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of increase (decrease) in unrecognized tax benefits attributable to uncertain tax positions taken in tax returns. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
Name: | us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
Name: | us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of increase (decrease) in valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
Name: | us-gaap_ValuationAllowancesAndReservesPeriodIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_GeneralAndAdministrativeExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TaxCreditCarryforwardAxis=holx_NetOperatingLossCarryforwardsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TaxCreditCarryforwardAxis=holx_TaxCreditCarryforwardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=us-gaap_DomesticCountryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=us-gaap_StateAndLocalJurisdictionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=us-gaap_ForeignCountryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |