REVENUE - Disaggregation of Revenue by Product and Region (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Revenue from External Customer [Line Items]
Total revenues	$ 11,337	$ 11,648
Performance obligation satisfied in previous period	166	147
United States
Revenue from External Customer [Line Items]
Total revenues	8,033	7,694
International
Revenue from External Customer [Line Items]
Total revenues	3,149	3,727
Other
Revenue from External Customer [Line Items]
Total revenues	155	227
In-Line Products
Revenue from External Customer [Line Items]
Total revenues	8,625	8,287
Eliquis
Revenue from External Customer [Line Items]
Total revenues	3,423	3,211
Opdivo
Revenue from External Customer [Line Items]
Total revenues	2,202	1,923
Pomalyst/Imnovid
Revenue from External Customer [Line Items]
Total revenues	832	826
Orencia
Revenue from External Customer [Line Items]
Total revenues	764	792
Sprycel
Revenue from External Customer [Line Items]
Total revenues	429	483
Yervoy
Revenue from External Customer [Line Items]
Total revenues	508	515
Mature and other products
Revenue from External Customer [Line Items]
Total revenues	467	537
New Product Portfolio
Revenue from External Customer [Line Items]
Total revenues	723	350
Reblozyl
Revenue from External Customer [Line Items]
Total revenues	206	156
Abecma
Revenue from External Customer [Line Items]
Total revenues	147	67
Opdualag
Revenue from External Customer [Line Items]
Total revenues	117	6
Zeposia
Revenue from External Customer [Line Items]
Total revenues	78	36
Breyanzi
Revenue from External Customer [Line Items]
Total revenues	71	44
Onureg
Revenue from External Customer [Line Items]
Total revenues	34	23
Inrebic
Revenue from External Customer [Line Items]
Total revenues	25	18
Camzyos
Revenue from External Customer [Line Items]
Total revenues	29	0
Sotyktu
Revenue from External Customer [Line Items]
Total revenues	16	0
Total In-Line Products and New Product Portfolio
Revenue from External Customer [Line Items]
Total revenues	9,348	8,637
Recent LOE Products
Revenue from External Customer [Line Items]
Total revenues	1,989	3,011
Revlimid
Revenue from External Customer [Line Items]
Total revenues	1,750	2,797
Abraxane
Revenue from External Customer [Line Items]
Total revenues	$ 239	$ 214