REVENUE - Reconciliation of Gross Product Sales to Net Product Sales (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Gross to Net Adjustments [Line Items]
Total Revenues	$ 12,269	$ 12,201	$ 23,470	$ 24,066
Total GTN adjustments	(10,272)	(8,855)	(19,260)	(16,591)
Prior period gross to net adjustment impacted by new accounting pronouncement	42	(19)	331	61
United States
Gross to Net Adjustments [Line Items]
Total Revenues	8,519	8,801	16,392	17,277
Total GTN adjustments	(9,500)	(8,000)	(17,600)	(14,900)
Gross product sales
Gross to Net Adjustments [Line Items]
Total Revenues	22,181	20,780	42,054	40,075
Net product sales
Gross to Net Adjustments [Line Items]
Total Revenues	11,909	11,925	22,794	23,484
Charge-backs and cash discounts
Gross to Net Adjustments [Line Items]
Total GTN adjustments	(3,407)	(2,843)	(6,365)	(5,399)
Medicaid and Medicare rebates
Gross to Net Adjustments [Line Items]
Total GTN adjustments	(4,516)	(3,864)	(8,356)	(6,948)
Other rebates, returns, discounts and adjustments
Gross to Net Adjustments [Line Items]
Total GTN adjustments	$ (2,348)	$ (2,148)	$ (4,538)	$ (4,244)