RESTRUCTURING - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) employee	Dec. 31, 2020 USD ($) employee	Dec. 31, 2019 USD ($) employee
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	$ 3,000
Restructuring and related charges incurred to date	$ 2,600
Cash outlays			$ 2,700
Workforce reduction of manufacturing, selling, administrative, and research and development personnel | employee	405	1,565	125
MyoKardia Acquisition Plan
Restructuring Cost and Reserve [Line Items]
Expected restructuring and related charges	$ 150
Restructuring and related charges incurred to date	$ 117
Company Transformation
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges incurred to date		$ 1,500