ALLIANCES (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Alliance Statement [Line Items]
Revenues		$ 10,781	$ 5,920
Cost of Goods and Services Sold	[1]	3,662	1,824
Other Nonoperating (Income) Expense		1,163	(261)
Receivables		8,290		$ 7,685
Accounts payable		3,069		2,445
Collaborative Arrangement [Member]
Alliance Statement [Line Items]
Revenues		2,828	2,507
Cost of Goods and Services Sold		1,306	1,019
Selling, General and Administrative Expense - Collaborative Arrangement		(40)	(28)
Research and Development Expense - Collaborative Arrangement		46	14
Other Nonoperating (Income) Expense		(15)	(14)
Receivables		309		347
Accounts payable		1,284		1,026
Deferred income from alliances		432		$ 431
Net product sales [Member]
Alliance Statement [Line Items]
Revenues		10,541	5,713
Net product sales [Member] | Collaborative Arrangement [Member]
Alliance Statement [Line Items]
Revenues		2,723	2,378
Collaborative Arrangement [Member] | Collaborative Arrangement [Member]
Alliance Statement [Line Items]
Revenues		$ 105	$ 129

[1] Excludes amortization of acquired intangible assets