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Grifols Collaboration Agreement - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended		1 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Jul. 31, 2009 Grifols [Member] Collaboration Agreement [Member] 2012-2013 [Member]	Jul. 31, 2009 Grifols [Member] Collaboration Agreement [Member] 2014 [Member]	Jul. 31, 2009 Grifols [Member] Collaboration Agreement [Member] 2015 [Member]	Jul. 31, 2009 Blood screening [Member] Grifols [Member] Collaboration Agreement [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Manufacturing costs entitled to recover						50.00%
Share of revenue from assay that includes test for HCV			47.00%	48.00%	50.00%
Share of revenue from assay that excludes test for HCV						50.00%
Collaboration agreements revenue	$ 223.3	$ 197.9

X

- Definition

Collaboration agreements revenue.

+ References

No definition available.

+ Details

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X

- Definition

Manufacturing Costs Entitled To Recover

+ References

No definition available.

+ Details

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X

- Definition

Represents the percentage of revenue that the Company is entitled to receive from Novartis from the use of any assay that does not test for HCV.

+ References

No definition available.

+ Details

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X

- Definition

Represents the percentage of revenue that the Company is entitled to receive from Novartis from the use of any assay that includes a test for HCV.

+ References

No definition available.

+ Details

Name:	holx_ShareOfRevenueFromAnyAssayThatIncludesTestForHcv
Namespace Prefix:	holx_
Data Type:	num:percentItemType
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- Details

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