REVENUE - Reconciliation of Gross Product Sales to Net Product Sales (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Gross to Net Adjustments [Line Items]
Total Revenues	$ 12,222	$ 11,892	$ 35,692	$ 35,958
Total GTN adjustments	(10,644)	(9,740)	(29,903)	(26,331)
Prior period gross to net adjustment impacted by new accounting pronouncement	87	42	418	103
United States
Gross to Net Adjustments [Line Items]
Total Revenues	8,329	8,232	24,721	25,509
Total GTN adjustments	(9,800)	(8,900)	(27,500)	(23,900)
Gross product sales
Gross to Net Adjustments [Line Items]
Total Revenues	22,494	21,223	64,548	61,298
Net product sales
Gross to Net Adjustments [Line Items]
Total Revenues	11,850	11,483	34,645	34,967
Charge-backs and cash discounts
Gross to Net Adjustments [Line Items]
Total GTN adjustments	(3,475)	(2,967)	(9,840)	(8,366)
Medicaid and Medicare rebates
Gross to Net Adjustments [Line Items]
Total GTN adjustments	(4,887)	(4,577)	(13,244)	(11,525)
Other rebates, returns, discounts and adjustments
Gross to Net Adjustments [Line Items]
Total GTN adjustments	$ (2,281)	$ (2,196)	$ (6,819)	$ (6,440)