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INTANGIBLE ASSETS AND GOODWILL - Narrative (Details) - USD ($)								3 Months Ended			12 Months Ended
	Oct. 01, 2021	Jun. 30, 2021	Mar. 31, 2021	Oct. 01, 2020	Jun. 30, 2020	Mar. 31, 2020	Oct. 01, 2019	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Goodwill impairments		$ 0	$ 0				$ 0				$ 469,000,000
Revenues											8,434,000,000	$ 8,027,000,000	$ 8,601,000,000
Revenue, year-over-year increase											407,000,000
Revenue, year-over-year decrease, percentage								1.00%	3.00%	23.00%
Percentage of fair value in excess of carrying value		45.00%	40.00%
Accumulated goodwill impairment charges to date											4,180,000,000
Ortho Dermatologics Reporting Unit
Finite-Lived Intangible Assets [Line Items]
Goodwill impairments	$ 0		$ 469,000,000	$ 0	$ 0	$ 0
Reporting unit, impairment test, long-term growth rates	1.00%		1.00%	2.00%
Reporting unit, impairment test, estimated cash flows, discount rate	9.00%
Percentage of fair value in excess of carrying value	10.00%			10.00%
Reporting Units Excluding Ortho Dermatologics
Finite-Lived Intangible Assets [Line Items]
Goodwill impairments												0
Minimum
Finite-Lived Intangible Assets [Line Items]
Reporting unit, impairment test, long-term growth rates		2.00%	1.00%
Reporting unit, impairment test, estimated cash flows, discount rate		7.00%	11.00%
Minimum | Ortho Dermatologics Reporting Unit
Finite-Lived Intangible Assets [Line Items]
Reporting unit, impairment test, estimated cash flows, discount rate			9.00%	9.50%
Maximum
Finite-Lived Intangible Assets [Line Items]
Reporting unit, impairment test, long-term growth rates		3.00%	3.00%
Reporting unit, impairment test, estimated cash flows, discount rate		10.00%	12.25%
Maximum | Ortho Dermatologics Reporting Unit
Finite-Lived Intangible Assets [Line Items]
Reporting unit, impairment test, estimated cash flows, discount rate			10.00%	9.75%
Acquired IPR&D
Finite-Lived Intangible Assets [Line Items]
Impairment of indefinite-lived intangible assets												1,000,000	4,000,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Amoun Pharmaceutical Company S.A.E
Finite-Lived Intangible Assets [Line Items]
Impairment of intangible assets											88,000,000
Impairment of long-lived assets											26,000,000
Held For Sale | Amoun Pharmaceutical Company S.A.E
Finite-Lived Intangible Assets [Line Items]
Impairment of long-lived assets								$ 96,000,000
Held For Sale | A Certain International Business
Finite-Lived Intangible Assets [Line Items]
Impairment of long-lived assets												96,000,000
Held For Sale | Certain Products For Disposal, September 2019
Finite-Lived Intangible Assets [Line Items]
Impairment of long-lived assets													8,000,000
Product brands
Finite-Lived Intangible Assets [Line Items]
Impairment of intangible assets											105,000,000	16,000,000	58,000,000
Discontinued Product Lines
Finite-Lived Intangible Assets [Line Items]
Impairment of intangible assets											23,000,000	$ 1,000,000
Product rights/patents
Finite-Lived Intangible Assets [Line Items]
Impairment of intangible assets													$ 5,000,000
Unutilized IT Infrastructure Improvement Project
Finite-Lived Intangible Assets [Line Items]
Impairment of intangible assets											$ 18,000,000

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