REVENUE - Reconciliation of Gross Product Sales to Net Product Sales (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Gross to Net Adjustments [Line Items]
Total revenues	$ 10,966	$ 11,218	$ 33,529	$ 34,753
Total GTN adjustments	(8,003)	(6,793)	(21,437)	(17,949)
Prior period gross to net adjustment impacted by new accounting pronouncement	18	10	116	207
Gross product sales
Gross to Net Adjustments [Line Items]
Total revenues	18,648	17,606	54,047	51,555
Net product sales
Gross to Net Adjustments [Line Items]
Total revenues	10,645	10,813	32,610	33,606
Charge-backs and cash discounts
Gross to Net Adjustments [Line Items]
Total GTN adjustments	(2,373)	(1,907)	(6,743)	(5,420)
Medicaid and Medicare rebates
Gross to Net Adjustments [Line Items]
Total GTN adjustments	(3,730)	(3,295)	(9,355)	(8,003)
Other rebates, returns, discounts and adjustments
Gross to Net Adjustments [Line Items]
Total GTN adjustments	$ (1,900)	$ (1,591)	$ (5,339)	$ (4,526)