ALLIANCES - Selected Financial Information For Alliances (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Alliance Statement [Line Items]
Total revenues		$ 11,226	$ 11,887	$ 22,563	$ 23,535
Cost of products sold	[1]	2,876	2,720	5,442	5,191
Marketing, selling and administrative		(1,934)	(1,787)	(3,696)	(3,618)
Other (income)/expense, net		(116)	284	(529)	933
Receivables – from alliance partners		10,112		10,112		$ 9,886
Accounts payable – to alliance partners		3,069		3,069		3,040
Net product sales
Alliance Statement [Line Items]
Total revenues		10,917	11,485	21,965	22,793
Alliance revenues
Alliance Statement [Line Items]
Total revenues		179	199	323	387
Alliance revenues
Alliance Statement [Line Items]
Total revenues		3,499	3,472	7,175	6,899
Cost of products sold		1,614	1,572	3,320	3,128
Marketing, selling and administrative		(64)	(53)	(138)	(107)
Research and development		36	12	80	34
Other (income)/expense, net		(15)	(11)	(27)	(23)
Receivables – from alliance partners		287		287		317
Accounts payable – to alliance partners		1,613		1,613		1,249
Deferred income from - alliances		300		300		$ 289
Acquired IPRD		55	100	55	100
Alliance revenues | Net product sales
Alliance Statement [Line Items]
Total revenues		$ 3,320	$ 3,273	$ 6,852	$ 6,512

[1] Excludes amortization of acquired intangible assets