RESTRUCTURING - Schedule of Restructuring and Related Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Restructuring Cost and Reserve [Line Items]
Total charges	$ 520	$ 751	$ 1,410
Employee termination costs	69	159	457
Other termination costs	6	10	73
Provision for restructuring	75	169	530
Integration expenses	440	564	717
Accelerated depreciation	5	2	53
Asset impairments	0	24	103
Other shutdown costs, net	0	(8)	7
Cost of products sold
Restructuring Cost and Reserve [Line Items]
Total charges	0	24	32
Marketing, selling and administrative
Restructuring Cost and Reserve [Line Items]
Total charges	5	3	10
Research and development
Restructuring Cost and Reserve [Line Items]
Total charges	0	0	113
Other (income)/expense, net
Restructuring Cost and Reserve [Line Items]
Total charges	515	724	1,255
Celgene Acquisition Plan
Restructuring Cost and Reserve [Line Items]
Total charges	472	673	1,244
Other Restructuring
Restructuring Cost and Reserve [Line Items]
Total charges	48	78	39
Company Transformation
Restructuring Cost and Reserve [Line Items]
Total charges	$ 0	$ 0	$ 127