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ACQUISITIONS AND OTHER ARRANGEMENTS - Summary of Fair Value of Assets Acquired and Liabilities Assumed for Transderm Scop (Details) $ in Millions	Mar. 31, 2021 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Asset Acquisition [Line Items]
Goodwill		$ 6,514	$ 6,452
Transderm Scop
Asset Acquisition [Line Items]
Inventories	$ 16
Goodwill	1
Other intangible assets	67
Total assets acquired	84
Transderm Scop \| Developed Product Rights
Asset Acquisition [Line Items]
Reacquired license rights fair value total	$ 64
Weighted-average useful life	9 years
Transderm Scop \| Developed Product Rights \| Measurement Input Discount Rate
Asset Acquisition [Line Items]
Discount rate used to measure intangible assets	0.225
Transderm Scop \| Customer relationships
Asset Acquisition [Line Items]
Reacquired license rights fair value total	$ 3
Weighted-average useful life	7 years
Transderm Scop \| Customer relationships \| Measurement Input Discount Rate
Asset Acquisition [Line Items]
Discount rate used to measure intangible assets	0.155