OTHER EXPENSE (INCOME), NET (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Other Nonoperating Income (Expense) [Abstract]
Interest expense	$ 357		$ 123	$ 719	$ 168
Pension and postretirement	(2)		26	(6)	70
Royalties and licensing income	(311)		(303)	(721)	(611)
Divestiture losses/(gains)	9		8	(7)	8
Acquisition expenses	0		303	0	468
Contingent consideration	(165)		0	391	0
Investment income	(25)		(119)	(86)	(175)
Integration expenses	166		106	340	128
Provision for restructuring	115		10	275	22
Equity investment gains	(818)		(71)	(479)	(246)
Litigation and other settlements	(1)		0	31	1
Transition and other service fees	(50)		(2)	(111)	(4)
Intangible asset impairment	21		15	21	15
Reversion excise tax	0	$ 76	0	76	0
Other	(32)		4	(16)	(5)
Other (income)/expense, net	$ (736)		$ 100	$ 427	$ (161)