RESTRUCTURING - Additional Information (Details) $ in Millions	6 Months Ended
	Jun. 30, 2022 USD ($) employee	Jun. 30, 2021 USD ($) employee	Dec. 31, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Change in estimates	$ 8	$ 8
Cost of products sold
Restructuring Cost and Reserve [Line Items]
Expected synergies, percentage	0.05
Marketing, selling and administrative
Restructuring Cost and Reserve [Line Items]
Expected synergies, percentage	0.65
Research and development
Restructuring Cost and Reserve [Line Items]
Expected synergies, percentage	0.30
Celgene Acquisition Plan
Restructuring Cost and Reserve [Line Items]
Expected cost savings and avoidance			$ 3,000
Expected restructuring and related charges	$ 3,300
Restructuring and related charges incurred to date	2,900
Cash outlays	$ 3,000
Workforce reduction of manufacturing, selling, administrative, and research and development personnel | employee	140	240
MyoKardia Acquisition Plan
Restructuring Cost and Reserve [Line Items]
Expected restructuring and related charges	$ 150
Restructuring and related charges incurred to date	$ 122