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ACQUISITIONS AND OTHER ARRANGEMENTS - Additional Information (Details) $ in Millions	1 Months Ended			3 Months Ended		6 Months Ended
	Jul. 29, 2021 USD ($)	Mar. 31, 2021 USD ($)	Feb. 28, 2021 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)
Business Acquisition [Line Items]
Payments to acquire productive assets						$ 329	$ 316
Net sales				$ 3,098	$ 2,718	6,044	$ 5,520
PerClot \| Subsequent Event
Business Acquisition [Line Items]
Contingent consideration, fair value	$ 25
Contingent Consideration	$ 36
Caelyx and Doxil
Business Acquisition [Line Items]
Payments to acquire productive assets			$ 325
Net sales				$ 28		$ 41
Caelyx and Doxil \| Customer Relationships
Business Acquisition [Line Items]
Weighted-average useful life			8 years
Payments to acquire productive assets			$ 11
Caelyx and Doxil \| Developed Technology Intangible Asset
Business Acquisition [Line Items]
Weighted-average useful life			9 years
Payments to acquire productive assets			$ 314
Transderm Scop \| Glaxo Smith Kline
Business Acquisition [Line Items]
Cash		$ 60
Contingent consideration, fair value		24
Contingent Consideration		30
Transderm Scop \| Developed Product Rights \| Glaxo Smith Kline
Business Acquisition [Line Items]
Fair value of asset acquired		$ 64
Weighted-average useful life		9 years
Transderm Scop \| Developed Product Rights \| Measurement Input, Discount Rate \| Glaxo Smith Kline
Business Acquisition [Line Items]
Discount rate used to measure intangible assets		0.225
Transderm Scop \| Customer Relationships \| Glaxo Smith Kline
Business Acquisition [Line Items]
Fair value of asset acquired		$ 3
Weighted-average useful life		7 years
Transderm Scop \| Customer Relationships \| Measurement Input, Discount Rate \| Glaxo Smith Kline
Business Acquisition [Line Items]
Discount rate used to measure intangible assets		0.155