ALLIANCES - Selected Financial Information For Alliances (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Alliance Statement [Line Items]
Total alliance revenues		$ 11,201	$ 11,865
Cost of products sold	[1]	3,033	2,932
Selling, general and administrative		(1,584)	(2,367)
Other (income)/expense, net		339	81
Receivables – from alliance partners		10,801		$ 10,747
Accounts payable – to alliance partners		4,002		3,602
Net product sales
Alliance Statement [Line Items]
Total alliance revenues		10,886	11,559
Collaborative Arrangement
Alliance Statement [Line Items]
Total alliance revenues		3,723	3,896
Cost of products sold		1,788	1,825
Selling, general and administrative		(65)	(79)
Research and development		77	54
Acquired IPRD		0	800
Other (income)/expense, net		(12)	(12)
Receivables – from alliance partners		170		221
Accounts payable – to alliance partners		1,762		1,578
Deferred income - from alliances		217		$ 222
Collaborative Arrangement | Net product sales
Alliance Statement [Line Items]
Total alliance revenues		3,635	3,762
Collaborative Arrangement | Alliance revenues
Alliance Statement [Line Items]
Total alliance revenues		$ 88	$ 134

[1] Excludes amortization of acquired intangible assets