REVENUE - Disaggregation of Revenue by Product and Region (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue from External Customer [Line Items]
Total Revenues	$ 11,218	$ 11,624	$ 34,753	$ 34,400
Performance obligation satisfied in previous period	119	73	450	463
United States
Revenue from External Customer [Line Items]
Total Revenues	7,941	7,296	23,903	21,694
International
Revenue from External Customer [Line Items]
Total Revenues	3,062	4,052	10,216	12,075
Other Region
Revenue from External Customer [Line Items]
Total Revenues	215	276	634	631
Total In-Line Products and New Product Portfolio
Revenue from External Customer [Line Items]
Total Revenues	8,621	8,011	26,403	24,031
Total In-Line Products
Revenue from External Customer [Line Items]
Total Revenues	8,068	7,667	25,018	23,301
Eliquis
Revenue from External Customer [Line Items]
Total Revenues	2,655	2,413	9,101	8,091
Opdivo
Revenue from External Customer [Line Items]
Total Revenues	2,047	1,905	6,033	5,535
Pomalyst/Imnovid
Revenue from External Customer [Line Items]
Total Revenues	886	851	2,620	2,478
Orencia
Revenue from External Customer [Line Items]
Total Revenues	883	870	2,551	2,442
Sprycel
Revenue from External Customer [Line Items]
Total Revenues	560	551	1,587	1,562
Yervoy
Revenue from External Customer [Line Items]
Total Revenues	523	515	1,563	1,481
Empliciti
Revenue from External Customer [Line Items]
Total Revenues	73	82	225	253
Mature and other products
Revenue from External Customer [Line Items]
Total Revenues	441	480	1,338	1,459
Total New Product Portfolio
Revenue from External Customer [Line Items]
Total Revenues	553	344	1,385	730
Reblozyl
Revenue from External Customer [Line Items]
Total Revenues	190	160	518	400
Abecma
Revenue from External Customer [Line Items]
Total Revenues	107	71	263	95
Zeposia
Revenue from External Customer [Line Items]
Total Revenues	69	40	171	86
Breyanzi
Revenue from External Customer [Line Items]
Total Revenues	44	30	127	47
Inrebic
Revenue from External Customer [Line Items]
Total Revenues	21	22	62	54
Onureg
Revenue from External Customer [Line Items]
Total Revenues	32	21	87	48
Opdualag
Revenue from External Customer [Line Items]
Total Revenues	84	0	148	0
Camzyos
Revenue from External Customer [Line Items]
Total Revenues	5	0	8	0
Sotyktu
Revenue from External Customer [Line Items]
Total Revenues	1	0	1	0
Total Recent LOE Products
Revenue from External Customer [Line Items]
Total Revenues	2,597	3,613	8,350	10,369
Revlimid
Revenue from External Customer [Line Items]
Total Revenues	2,420	3,347	7,718	9,493
Abraxane
Revenue from External Customer [Line Items]
Total Revenues	$ 177	$ 266	$ 632	$ 876