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Product Warranties Additional Information (Details) - USD ($) $ in Millions | 6 Months Ended
--- | ---
Mar. 26, 2016 | Mar. 28, 2015
Product Warranty Liability [Line Items] |  |
Provisions | $ 7.3 | $ 2.9
CHINA |  |
Product Warranty Liability [Line Items] |  |
Provisions | $ 4.0 |

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- Definition Represents the aggregate increase in the liability for accruals related to standard and extended product warranties issued during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph ((c)(3)) -URI http://asc.fasb.org/extlink&oid=51674963&loc=d3e12565-110249 + Details
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Balance Type: | credit
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | holx_InternationalMarketAxis=country_CN
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |