RESTRUCTURING - Schedule of Restructuring and Related Costs (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Restructuring Cost and Reserve [Line Items]
Total charges	$ 234	$ 148	$ 369	$ 278
Employee termination costs	109	19	174	41
Provision for restructuring	113	20	180	43
Integration expenses	59	124	126	229
Accelerated depreciation	12	4	13	6
Asset impairments	50	0	50	0
Other termination costs
Restructuring Cost and Reserve [Line Items]
Other termination costs	4	1	6	2
Other shutdown costs
Restructuring Cost and Reserve [Line Items]
Other termination costs	0	0	0	0
Marketing, selling and administrative
Restructuring Cost and Reserve [Line Items]
Total charges	20	4	20	6
Other (income)/expense, net
Restructuring Cost and Reserve [Line Items]
Total charges	172	144	306	272
Cost of products sold
Restructuring Cost and Reserve [Line Items]
Total charges	36	0	37	0
Research and Development
Restructuring Cost and Reserve [Line Items]
Total charges	6	0	6	0
2023 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Total charges	170	0	231	0
Celgene and Other Acquisition Plans
Restructuring Cost and Reserve [Line Items]
Total charges	$ 64	$ 148	$ 138	$ 278