SEGMENT INFORMATION - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Revenues	$ 1,944	$ 1,918
Pharmaceuticals
Disaggregation of Revenue [Line Items]
Revenues	823	834
Devices
Disaggregation of Revenue [Line Items]
Revenues	479	458
OTC
Disaggregation of Revenue [Line Items]
Revenues	394	376
Branded and Other Generics
Disaggregation of Revenue [Line Items]
Revenues	226	223
Other revenues
Disaggregation of Revenue [Line Items]
Revenues	22	27
Salix
Disaggregation of Revenue [Line Items]
Revenues	496	464
Salix | Pharmaceuticals
Disaggregation of Revenue [Line Items]
Revenues	496	464
Salix | Devices
Disaggregation of Revenue [Line Items]
Revenues	0	0
Salix | OTC
Disaggregation of Revenue [Line Items]
Revenues	0	0
Salix | Branded and Other Generics
Disaggregation of Revenue [Line Items]
Revenues	0	0
Salix | Other revenues
Disaggregation of Revenue [Line Items]
Revenues	0	0
International
Disaggregation of Revenue [Line Items]
Revenues	247	244
International | Pharmaceuticals
Disaggregation of Revenue [Line Items]
Revenues	57	58
International | Devices
Disaggregation of Revenue [Line Items]
Revenues	0	0
International | OTC
Disaggregation of Revenue [Line Items]
Revenues	39	38
International | Branded and Other Generics
Disaggregation of Revenue [Line Items]
Revenues	138	133
International | Other revenues
Disaggregation of Revenue [Line Items]
Revenues	13	15
Solta Medical
Disaggregation of Revenue [Line Items]
Revenues	73	72
Solta Medical | Pharmaceuticals
Disaggregation of Revenue [Line Items]
Revenues	0	0
Solta Medical | Devices
Disaggregation of Revenue [Line Items]
Revenues	73	72
Solta Medical | OTC
Disaggregation of Revenue [Line Items]
Revenues	0	0
Solta Medical | Branded and Other Generics
Disaggregation of Revenue [Line Items]
Revenues	0	0
Solta Medical | Other revenues
Disaggregation of Revenue [Line Items]
Revenues	0	0
Diversified
Disaggregation of Revenue [Line Items]
Revenues	197	249
Diversified | Pharmaceuticals
Disaggregation of Revenue [Line Items]
Revenues	162	205
Diversified | Devices
Disaggregation of Revenue [Line Items]
Revenues	0	0
Diversified | OTC
Disaggregation of Revenue [Line Items]
Revenues	2	2
Diversified | Branded and Other Generics
Disaggregation of Revenue [Line Items]
Revenues	27	36
Diversified | Other revenues
Disaggregation of Revenue [Line Items]
Revenues	6	6
Bausch + Lomb
Disaggregation of Revenue [Line Items]
Revenues	931	889
Bausch + Lomb | Pharmaceuticals
Disaggregation of Revenue [Line Items]
Revenues	108	107
Bausch + Lomb | Devices
Disaggregation of Revenue [Line Items]
Revenues	406	386
Bausch + Lomb | OTC
Disaggregation of Revenue [Line Items]
Revenues	353	336
Bausch + Lomb | Branded and Other Generics
Disaggregation of Revenue [Line Items]
Revenues	61	54
Bausch + Lomb | Other revenues
Disaggregation of Revenue [Line Items]
Revenues	$ 3	$ 6