ALLIANCES (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Alliance Statement [Line Items]
Total Revenues		$ 11,073	$ 10,781
Cost of products sold	[1]	2,841	3,662
Other (income)/expense, net		(702)	1,163
Receivables - from alliance partners		8,660		$ 8,501
Accounts payable - to alliance partners		2,972		2,713
Collaborative Arrangement [Member]
Alliance Statement [Line Items]
Total Revenues		3,024	2,828
Cost of products sold		1,397	1,306
Selling, General and Administrative Expense		(49)	(40)
Research and Development Expense		7	46
Other (income)/expense, net		(5)	(15)
Receivables - from alliance partners		315		343
Accounts payable - to alliance partners		1,356		1,093
Deferred income from alliance		367		$ 366
Net product sales [Member]
Alliance Statement [Line Items]
Total Revenues		10,798	10,541
Net product sales [Member] | Collaborative Arrangement [Member]
Alliance Statement [Line Items]
Total Revenues		2,882	2,723
Collaborative Arrangement [Member] | Collaborative Arrangement [Member]
Alliance Statement [Line Items]
Total Revenues		$ 142	$ 105

[1] Excludes amortization of acquired intangible assets