Reporting Unit, Impairment Test, Estimated Cash Flows, Discount Rate

No definition available.

Name:	bhc_ReportingUnitImpairmentTestEstimatedCashFlowsDiscountRate
Namespace Prefix:	bhc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Reporting Unit, Impairment Test, Long-Term Growth Rate

+ References

No definition available.

+ Details

Name:	bhc_ReportingUnitImpairmentTestLongTermGrowthRate
Namespace Prefix:	bhc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of accumulated impairment loss for 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 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

+ Details

Name:	us-gaap_GoodwillImpairedAccumulatedImpairmentLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising 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 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13854-109267

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13777-109266

+ Details

Name:	us-gaap_GoodwillImpairmentLoss
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

No definition available.

+ Details

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

- Definition

The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275

+ Details

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

- Definition

Percentage of fair value of reporting unit in excess of carrying amount.

+ References

No definition available.

+ Details

Name:	us-gaap_ReportingUnitPercentageOfFairValueInExcessOfCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_ReportingUnitAxis=bhc_OrthoDermatologicsReportUnitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=bhc_ProductBrandsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=bhc_DiscontinuedProductLinesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

INTANGIBLE ASSETS AND GOODWILL - Narrative (Details) - USD ($)		3 Months Ended	6 Months Ended
	Oct. 01, 2019	Jun. 30, 2020	Jun. 30, 2020	Jun. 30, 2019
Goodwill [Line Items]
Impairment of intangible assets			$ 15,000,000	$ 16,000,000
Goodwill impairment	$ 0
Reporting unit, impairment test, long-term growth rate		2.00%	2.00%
Accumulated goodwill impairment charges		$ 3,711,000,000	$ 3,711,000,000
Ortho Dermatologics Report Unit
Goodwill [Line Items]
Goodwill impairment		$ 0
Maximum
Goodwill [Line Items]
Reporting unit, impairment test, long-term growth rate	2.00%
Reporting unit, impairment test, estimated cash flows, discount rate	9.80%	10.00%	10.00%
Maximum \| Ortho Dermatologics Report Unit
Goodwill [Line Items]
Fair value of reporting value, greater than its carrying value		15.00%	15.00%
Minimum
Goodwill [Line Items]
Reporting unit, impairment test, long-term growth rate	1.50%
Reporting unit, impairment test, estimated cash flows, discount rate	9.00%	9.50%	9.50%
Minimum \| Ortho Dermatologics Report Unit
Goodwill [Line Items]
Fair value of reporting value, greater than its carrying value		10.00%	10.00%
Product brands
Goodwill [Line Items]
Impairment of intangible assets			$ 14,000,000	13,000,000
Discontinued Product Lines
Goodwill [Line Items]
Impairment of intangible assets			$ 1,000,000	$ 3,000,000