RESTRUCTURING - Schedule of Restructuring and Related Costs (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Restructuring Cost and Reserve [Line Items]
Total charges	$ 135	$ 130
Employee termination costs	65	22
Other termination costs	2	1
Provision for restructuring	67	23
Integration expenses (Note 6)	67	105
Accelerated depreciation	1	2
Cost of products sold
Restructuring Cost and Reserve [Line Items]
Total charges	1	0
Marketing, selling and administrative
Restructuring Cost and Reserve [Line Items]
Total charges	0	2
Other (income)/expense, net
Restructuring Cost and Reserve [Line Items]
Total charges	134	128
Celgene Acquisition Plan
Restructuring Cost and Reserve [Line Items]
Total charges	57	127
Other Restructuring
Restructuring Cost and Reserve [Line Items]
Total charges	78	$ 3
Employee termination costs	$ 61