GOODWILL AND OTHER INTANGIBLE ASSETS - Summary of Other Intangible Assets (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Finite other intangible assets, gross carrying amount	$ 10,610	$ 10,660
Finite other intangible assets, accumulated amortization	(5,424)	(5,161)
Finite other intangible assets, net	5,186	5,499
Other intangible assets, gross carrying amount	10,660	10,710
Other intangible assets, net	5,236	5,549
In process research and development [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite other intangible asset, carrying amount	50	50
Developed technology
Finite-Lived Intangible Assets [Line Items]
Finite other intangible assets, gross carrying amount	3,254	3,263
Finite other intangible assets, accumulated amortization	(1,804)	(1,690)
Finite other intangible assets, net	1,450	1,573
Software
Finite-Lived Intangible Assets [Line Items]
Finite other intangible assets, gross carrying amount	1,479	1,420
Finite other intangible assets, accumulated amortization	(833)	(780)
Finite other intangible assets, net	646	640
Trademarks/tradenames
Finite-Lived Intangible Assets [Line Items]
Finite other intangible assets, gross carrying amount	689	697
Finite other intangible assets, accumulated amortization	(594)	(570)
Finite other intangible assets, net	95	127
Customer-related
Finite-Lived Intangible Assets [Line Items]
Finite other intangible assets, gross carrying amount	4,945	5,035
Finite other intangible assets, accumulated amortization	(2,030)	(1,965)
Finite other intangible assets, net	2,915	3,070
Other
Finite-Lived Intangible Assets [Line Items]
Finite other intangible assets, gross carrying amount	243	245
Finite other intangible assets, accumulated amortization	(163)	(156)
Finite other intangible assets, net	$ 80	$ 89