XML 68 R46.htm IDEA: XBRL DOCUMENT v3.21.2

Summary of Significant Accounting Policies - Rollforward of Goodwill Activity by Reportable Segments (Detail) $ in Millions	12 Months Ended
	Sep. 25, 2021 USD ($)
Goodwill [Roll Forward]
Balance at September 26, 2020	$ 2,657.9
Foreign currency and other adjustments	(5.7)
Balance at September 25, 2021	3,281.6
Diagnostics
Goodwill [Roll Forward]
Balance at September 26, 2020	821.6
Foreign currency and other adjustments	(7.8)
Balance at September 25, 2021	1,410.8
Breast Health
Goodwill [Roll Forward]
Balance at September 26, 2020	764.8
Foreign currency and other adjustments	(0.1)
Balance at September 25, 2021	797.1
Gyn Surgical [Member]
Goodwill [Roll Forward]
Balance at September 26, 2020	1,063.4
Foreign currency and other adjustments	2.2
Balance at September 25, 2021	1,065.6
Skeletal Health
Goodwill [Roll Forward]
Balance at September 26, 2020	8.1
Foreign currency and other adjustments	0.0
Balance at September 25, 2021	8.1
Mobidiag Oy
Goodwill [Roll Forward]
Tax adjustment	432.6
Mobidiag Oy | Diagnostics
Goodwill [Roll Forward]
Tax adjustment	432.6
Diagenode
Goodwill [Roll Forward]
Tax adjustment	83.5
Diagenode | Diagnostics
Goodwill [Roll Forward]
Tax adjustment	83.5
Biotheranostics
Goodwill [Roll Forward]
Tax adjustment	80.9
Biotheranostics | Diagnostics
Goodwill [Roll Forward]
Tax adjustment	80.9
Somatex
Goodwill [Roll Forward]
Tax adjustment	32.4
Somatex | Breast Health
Goodwill [Roll Forward]
Tax adjustment	$ 32.4

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(10)(1))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266

+ Details

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

X

- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

+ Details

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

X

- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

+ Details

Name:	us-gaap_GoodwillForeignCurrencyTranslationGainLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=holx_DiagnosticsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=holx_BreastHealthMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=holx_GynSurgicalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=holx_SkeletalHealthMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

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

X

- Details

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

X

- Details

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