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ACQUISITIONS AND OTHER ARRANGEMENTS - Transderm Scop Narrative (Details)		12 Months Ended
	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Asset Acquisition [Line Items]
Cash		$ 743,000,000	$ 709,000,000	$ 696,000,000
Transderm Scop
Asset Acquisition [Line Items]
Cash	$ 60,000,000
Contingent consideration liability	30,000,000
Developed Product Rights | Transderm Scop
Asset Acquisition [Line Items]
Reacquired license rights fair value total	$ 64,000,000
Weighted-average useful life	9 years
Developed Product Rights | Measurement Input Discount Rate | Transderm Scop
Asset Acquisition [Line Items]
Discount rate used to measure intangible assets	0.225
Customer relationships | Transderm Scop
Asset Acquisition [Line Items]
Reacquired license rights fair value total	$ 3,000,000
Weighted-average useful life	7 years
Customer relationships | Measurement Input Discount Rate | Transderm Scop
Asset Acquisition [Line Items]
Discount rate used to measure intangible assets	0.155

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