Accelerated amortization

No definition available.

Name:	holx_AcceleratedAmortization
Namespace Prefix:	holx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Asset Group Fair Value

+ References

No definition available.

+ Details

Name:	holx_AssetGroupFairValue
Namespace Prefix:	holx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill)1

+ References

No definition available.

+ Details

Name:	holx_ImpairmentOfIntangibleAssetsIndefiniteLivedExcludingGoodwill1
Namespace Prefix:	holx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Impairment of Intangible Assets, Indefinite-Lived, Measurement Input

+ References

No definition available.

+ Details

Name:	holx_ImpairmentOfIntangibleAssetsIndefiniteLivedMeasurementInput
Namespace Prefix:	holx_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482665/350-30-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 926
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483154/926-20-50-5

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482686/350-30-45-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482665/350-30-50-2

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482665/350-30-50-3

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

+ Details

Name:	us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 55
-Paragraph 40
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482640/350-30-55-40

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482686/350-30-45-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482665/350-30-50-3

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482665/350-30-50-2

+ Details

Name:	us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The current portion of nonphysical assets, excluding financial assets, if these assets are classified into the current and noncurrent portions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 10
-SubTopic 20
-Topic 205
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483475/205-20-45-10

+ Details

Name:	us-gaap_IntangibleAssetsCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_IncomeStatementLocationAxis=holx_CostOfGoodsAndServicesSoldMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_OperatingExpenseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_DevelopedTechnologyRightsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_CustomerRelationshipsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_TradeNamesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=holx_AcessaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputDiscountRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=holx_BolderMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=holx_DiagenodeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=holx_MobidiagMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_InProcessResearchAndDevelopmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=holx_BioZorbMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Intangible Assets and Goodwill - Additional Information (Details)	3 Months Ended			6 Months Ended
	Mar. 29, 2025 USD ($)	Mar. 30, 2024 USD ($)	Dec. 30, 2023 USD ($)	Mar. 29, 2025 USD ($)	Mar. 30, 2024 USD ($)
Indefinite-Lived Intangible Assets [Line Items]
Impairment of intangible assets	$ 37,500,000	$ 900,000		$ 37,500,000	$ 5,200,000
Aggregate impairment charges	204,000,000
Cost Of Goods And Services Sold
Indefinite-Lived Intangible Assets [Line Items]
Aggregate impairment charges	183,400,000
Operating Expense
Indefinite-Lived Intangible Assets [Line Items]
Aggregate impairment charges	20,600,000
Developed technology
Indefinite-Lived Intangible Assets [Line Items]
Impairment of intangible assets	183,400,000
Customer Relationships
Indefinite-Lived Intangible Assets [Line Items]
Impairment of intangible assets	19,000,000
Trade Names
Indefinite-Lived Intangible Assets [Line Items]
Impairment of intangible assets	1,600,000
Acessa
Indefinite-Lived Intangible Assets [Line Items]
Impairment of intangible assets	61,900,000
Asset Group Fair Value	8,100,000			8,100,000
Finite-lived intangibles	$ 7,200,000			$ 7,200,000
Acessa \| Measurement Input, Discount Rate
Indefinite-Lived Intangible Assets [Line Items]
Measurement input	0.135			0.135
Bolder
Indefinite-Lived Intangible Assets [Line Items]
Impairment of intangible assets	$ 64,500,000
Asset Group Fair Value	4,100,000			$ 4,100,000
Finite-lived intangibles	$ 0			$ 0
Bolder \| Measurement Input, Discount Rate
Indefinite-Lived Intangible Assets [Line Items]
Measurement input	0.163			0.163
Diagenode
Indefinite-Lived Intangible Assets [Line Items]
Impairment of intangible assets	$ 38,600,000
Asset Group Fair Value	6,700,000			$ 6,700,000
Finite-lived intangibles	$ 3,000,000			$ 3,000,000
Diagenode \| Measurement Input, Discount Rate
Indefinite-Lived Intangible Assets [Line Items]
Measurement input	0.125			0.125
Mobidiag
Indefinite-Lived Intangible Assets [Line Items]
Impairment of intangible assets	$ 39,000,000
Asset Group Fair Value	13,400,000			$ 13,400,000
Finite-lived intangibles	$ 6,700,000			$ 6,700,000
Accelerated amortization			$ 7,300,000
Mobidiag \| Measurement Input, Discount Rate
Indefinite-Lived Intangible Assets [Line Items]
Measurement input	0.180			0.180
Mobidiag \| Customer Relationships
Indefinite-Lived Intangible Assets [Line Items]
Finite-lived intangibles			0
Mobidiag \| Trade Names
Indefinite-Lived Intangible Assets [Line Items]
Finite-lived intangibles			0
Mobidiag \| In-process research and development
Indefinite-Lived Intangible Assets [Line Items]
Impairment of intangible assets	$ 16,900,000		4,300,000
Intangible assets, current	$ 5,000,000		$ 22,400,000	$ 5,000,000
BioZorb
Indefinite-Lived Intangible Assets [Line Items]
Impairment of intangible assets		26,800,000
BioZorb \| Developed technology
Indefinite-Lived Intangible Assets [Line Items]
Impairment of intangible assets		25,900,000
Finite-lived intangibles		13,900,000			13,900,000
BioZorb \| Trade Names
Indefinite-Lived Intangible Assets [Line Items]
Impairment of intangible assets		900,000
Finite-lived intangibles		$ 500,000			$ 500,000