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Sale of Makena - Additional Information (Detail) (USD $)	3 Months Ended	6 Months Ended
	Dec. 29, 2012	Mar. 29, 2014	Mar. 30, 2013
Regulatory Assets [Abstract]
Amended transaction price as a result of executing amendment		$ 199,500,000
Final payment received	60,000,000
Gain on net of certain contingent legal fees and amounts due to inventor	$ 53,900,000		$ 53,884,000

X

- Definition

Represents total transaction price for the sale of certain intellectual property rights as a result of executing an amendment to the original agreement.

+ References

No definition available.

+ Details

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X

- Definition

Proceeds from sale of rights and intellectual property.

+ References

No definition available.

+ Details

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Namespace Prefix:	holx_
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X

- Details

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Namespace Prefix:	holx_
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X

- Definition

Amount of gain (loss) on sale or disposal of intangible assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-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 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.7,9)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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