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

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Reporting Unit, Impairment Test, Estimated Cash Flows, Increase (Decrease) In Discount Rate

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Reporting Unit, Impairment Test, Long-Term Growth Rate

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

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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.

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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.

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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.

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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.

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Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.

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

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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INTANGIBLE ASSETS AND GOODWILL - Narrative (Details)				2 Months Ended	3 Months Ended				9 Months Ended		12 Months Ended
INTANGIBLE ASSETS AND GOODWILL - Narrative (Details)	Oct. 01, 2021 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Jun. 30, 2022 USD ($) reporting_unit	Sep. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($) reporting_unit	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) reporting_unit	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Goodwill [Line Items]
Asset impairments, including loss on assets held for sale					$ 1,000,000			$ 18,000,000	$ 15,000,000	$ 213,000,000
Impairment of intangible assets										213,000,000
Finite-lived intangible assets					4,326,000,000				4,326,000,000		$ 5,250,000,000
Revenues					2,046,000,000			2,111,000,000	5,931,000,000	6,238,000,000
Fair value of reporting value, greater than its carrying value		45.00%	40.00%
Goodwill impairment		$ 0	$ 0						202,000,000		469,000,000
Accumulated goodwill impairment charges					4,382,000,000				4,382,000,000
Bausch + Lomb
Goodwill [Line Items]
Number of reporting units \| reporting_unit				3
Ortho Dermatologics
Goodwill [Line Items]
Goodwill impairment									$ 0		469,000,000
Number of reporting units \| reporting_unit							2		2
Salix
Goodwill [Line Items]
Revenues					$ 544,000,000			$ 527,000,000	$ 1,509,000,000	1,515,000,000
Goodwill impairment									$ 0		0
Reporting Units Excluding Ortho Dermatologics
Goodwill [Line Items]
Goodwill impairment											0
Ortho Dermatologics Reporting Unit
Goodwill [Line Items]
Reporting unit, impairment test, long-term growth rate	1.00%		1.00%	1.00%	1.00%	1.00%	1.00%		1.00%
Reporting unit, impairment test, estimated cash flows, discount rate	9.00%			10.00%	10.50%	10.00%	9.00%		10.50%
Fair value of reporting value, greater than its carrying value	10.00%						2.00%
Goodwill impairment	$ 0		$ 469,000,000		$ 119,000,000	$ 83,000,000	$ 0
Reporting unit, impairment test, estimated cash flows, change in discount rate				1.00%		1.00%
Vision Care, Surgical And Ophthalmic Reporting Units \| Bausch + Lomb
Goodwill [Line Items]
Fair value of reporting value, greater than its carrying value				25.00%		25.00%
Goodwill impairment				$ 0
All Reporting Units, Excluding Ortho Dermatologics, Vision Care, Surgical and Ophthalmic
Goodwill [Line Items]
Goodwill impairment						$ 0
Salix Reporting Unit
Goodwill [Line Items]
Reporting unit, impairment test, long-term growth rate					2.50%				2.50%
Fair value of reporting value, greater than its carrying value					5.00%				5.00%
Goodwill impairment					$ 0
Minimum
Goodwill [Line Items]
Reporting unit, impairment test, long-term growth rate		2.00%	1.00%
Reporting unit, impairment test, estimated cash flows, discount rate		7.00%	11.00%
Minimum \| Ortho Dermatologics Reporting Unit
Goodwill [Line Items]
Reporting unit, impairment test, estimated cash flows, discount rate			9.00%
Minimum \| Vision Care, Surgical And Ophthalmic Reporting Units \| Bausch + Lomb
Goodwill [Line Items]
Reporting unit, impairment test, long-term growth rate				2.00%		2.00%
Reporting unit, impairment test, estimated cash flows, discount rate				9.00%		9.00%
Minimum \| Salix Reporting Unit
Goodwill [Line Items]
Reporting unit, impairment test, estimated cash flows, discount rate					9.75%				9.75%
Maximum
Goodwill [Line Items]
Reporting unit, impairment test, long-term growth rate		3.00%	3.00%
Reporting unit, impairment test, estimated cash flows, discount rate		10.00%	12.25%
Maximum \| Ortho Dermatologics Reporting Unit
Goodwill [Line Items]
Reporting unit, impairment test, estimated cash flows, discount rate			10.00%
Maximum \| Vision Care, Surgical And Ophthalmic Reporting Units \| Bausch + Lomb
Goodwill [Line Items]
Reporting unit, impairment test, long-term growth rate				3.00%		3.00%
Reporting unit, impairment test, estimated cash flows, discount rate				11.50%		11.50%
Maximum \| Salix Reporting Unit
Goodwill [Line Items]
Reporting unit, impairment test, estimated cash flows, discount rate					10.00%				10.00%
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Amoun
Goodwill [Line Items]
Impairment of intangible assets										88,000,000
Xifaxan Branded Products
Goodwill [Line Items]
Impairment of intangible assets									$ 0
Finite-lived intangible assets					$ 2,828,000,000				$ 2,828,000,000
Finite lived intangible assets, useful life									63 months
Revenues									$ 1,216,000,000	1,194,000,000
Finite lived intangible assets, annual amortization expense									$ 539,000,000
Xifaxan Branded Products \| Salix \| Revenue from Contract with Customer, Segment Benchmark \| Product Concentration Risk
Goodwill [Line Items]
Concentration risk percentage					80.00%				80.00%
Product brands
Goodwill [Line Items]
Impairment of intangible assets									$ 10,000,000	105,000,000
Finite-lived intangible assets					$ 3,846,000,000				3,846,000,000		$ 4,673,000,000
Discontinued Product Lines
Goodwill [Line Items]
Impairment of intangible assets									$ 5,000,000	$ 20,000,000