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Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Apr. 01, 2017 | Sep. 04, 2012
Commitments and Contingencies Disclosure [Abstract] |  |
Assessed damages |  | $ 4.0
Payment of settlement compensation | $ 8.5 |
Litigation settlement expense | $ 9.2 |

X
- Definition Amount assessed in damages. + References No definition available. + Details
Name: | holx_AmountAssessedInDamages
Namespace Prefix: | holx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount awarded to other party in judgment or settlement of litigation. + References No definition available. + Details
Name: | us-gaap_LitigationSettlementAmountAwardedToOtherParty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees. + References No definition available. + Details
Name: | us-gaap_LitigationSettlementExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration