GOODWILL AND OTHER INTANGIBLE ASSETS (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 20,517		$ 20,517		$ 22,488
Gross other intangible assets	68,069		68,069		68,106
Less: accumulated amortization	(11,371)		(11,371)		(4,137)
Other intangible assets	56,698		56,698		63,969
Acquired Developed Product Rights Reclassified From IPRD			12,900
Amortization expense	2,500	$ 52	7,300	$ 156
Licenses [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net	461		461		482
Acquired developed product rights [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net	59,651		59,651		46,827
Capitalized software [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net	1,357		1,357		1,297
In Process Research and Development [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
In-process research and development	$ 6,600		$ 6,600		$ 19,500
Minimum [Member] | Licenses [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			5 years
Minimum [Member] | Acquired developed product rights [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			3 years
Minimum [Member] | Capitalized software [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			3 years
Maximum [Member] | Licenses [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			15 years
Maximum [Member] | Acquired developed product rights [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			15 years
Maximum [Member] | Capitalized software [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			10 years