XML 54 R43.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Fair Value Measurements - Estimated Fair Values of Convertible Notes (Detail) $ in Millions | Jul. 01, 2017 USD ($)
--- | ---
Estimated Fair Value Of Financial Instruments [Line Items] |
Estimated fair values of debt instruments | $ 717.0
2012 Notes |
Estimated Fair Value Of Financial Instruments [Line Items] |
Estimated fair values of debt instruments | 387.1
2013 Notes |
Estimated Fair Value Of Financial Instruments [Line Items] |
Estimated fair values of debt instruments | $ 329.9

X
- Definition Estimated Fair Value Of Financial Instruments [Line Items] + References No definition available. + Details
Name: | holx_EstimatedFairValueOfFinancialInstrumentsLineItems
Namespace Prefix: | holx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Convertible Security -URI http://asc.fasb.org/extlink&oid=6509036 + Details
Name: | us-gaap_ConvertibleDebtFairValueDisclosures
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=holx_TwoThousandAndTwelveNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=holx_TwoThousandAndThirteenNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |