REVENUE - Disaggregation of Revenue by Product and Region (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenue from External Customer [Line Items]
Total Revenues	$ 48,300	$ 45,006	$ 46,159
Performance obligation satisfied in previous period	797	462	556
United States
Revenue from External Customer [Line Items]
Total Revenues	34,105	31,210	31,500
International
Revenue from External Customer [Line Items]
Total Revenues	13,199	13,097	13,825
Other
Revenue from External Customer [Line Items]
Total Revenues	996	699	834
Growth Portfolio
Revenue from External Customer [Line Items]
Total Revenues	22,563	19,366	16,757
Opdivo
Revenue from External Customer [Line Items]
Total Revenues	9,304	9,009	8,249
Orencia
Revenue from External Customer [Line Items]
Total Revenues	3,682	3,601	3,464
Yervoy
Revenue from External Customer [Line Items]
Total Revenues	2,530	2,238	2,131
Reblozyl
Revenue from External Customer [Line Items]
Total Revenues	1,773	1,008	717
Opdualag
Revenue from External Customer [Line Items]
Total Revenues	928	627	252
Breyanzi
Revenue from External Customer [Line Items]
Total Revenues	747	364	182
Camzyos
Revenue from External Customer [Line Items]
Total Revenues	602	231	24
Zeposia
Revenue from External Customer [Line Items]
Total Revenues	566	434	250
Abecma
Revenue from External Customer [Line Items]
Total Revenues	406	472	388
Sotyktu
Revenue from External Customer [Line Items]
Total Revenues	246	170	8
Krazati
Revenue from External Customer [Line Items]
Total Revenues	126	0	0
Augtyro
Revenue from External Customer [Line Items]
Total Revenues	38	1	0
Cobenfy
Revenue from External Customer [Line Items]
Total Revenues	10	0	0
Other Growth products
Revenue from External Customer [Line Items]
Total Revenues	1,605	1,211	1,092
Legacy Portfolio
Revenue from External Customer [Line Items]
Total Revenues	25,737	25,640	29,402
Eliquis
Revenue from External Customer [Line Items]
Total Revenues	13,333	12,206	11,789
Revlimid
Revenue from External Customer [Line Items]
Total Revenues	5,773	6,097	9,978
Pomalyst/Imnovid
Revenue from External Customer [Line Items]
Total Revenues	3,545	3,441	3,497
Sprycel
Revenue from External Customer [Line Items]
Total Revenues	1,286	1,930	2,165
Abraxane
Revenue from External Customer [Line Items]
Total Revenues	875	1,004	811
Other Legacy products
Revenue from External Customer [Line Items]
Total Revenues	$ 925	$ 962	$ 1,162