ALLIANCES - Financial Information Pertaining to Alliances (Total) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Total Revenues		$ 46,159	$ 46,385	$ 42,518
Cost of products sold	[1]	10,137	9,940	11,773
Marketing, selling and administrative		(7,814)	(7,690)	(7,661)
Other (income)/expense, net		576	(720)	(2,314)
Receivables – from alliance partners		9,886	9,369
Accounts payable – to alliance partners		3,040	2,949
Net product sales
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Total Revenues		44,671	45,055	41,321
Alliance revenues
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Total Revenues		12,743	11,556	9,979
Cost of products sold		5,768	5,227	4,485
Marketing, selling and administrative		(223)	(183)	(128)
Research and development		49	42	91
Acquired IPRD		100	730	258
Other (income)/expense, net		(53)	(62)	(74)
Receivables – from alliance partners		317	320
Accounts payable – to alliance partners		1,249	1,229
Deferred income from alliances		289	330
Alliance revenues | Net product sales
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Total Revenues		$ 12,001	$ 10,840	$ 9,364

[1] Excludes amortization of acquired intangible assets.