GOODWILL AND OTHER INTANGIBLE ASSETS - Summary of Other Intangible Assets (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Finite other intangible assets, gross carrying amount	$ 7,654	$ 7,601
Finite other intangible assets, accumulated amortization	(3,657)	(3,379)
Finite other intangible assets, net	3,997	4,222
Other intangible assets, gross carrying amount	7,657	7,604
Other intangible assets, net	4,000	4,225
In process research and development [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite other intangible asset, carrying amount	3	3
Developed technology
Finite-Lived Intangible Assets [Line Items]
Finite other intangible assets, gross carrying amount	2,634	2,634
Finite other intangible assets, accumulated amortization	(1,363)	(1,252)
Finite other intangible assets, net	1,271	1,382
Software
Finite-Lived Intangible Assets [Line Items]
Finite other intangible assets, gross carrying amount	1,426	1,404
Finite other intangible assets, accumulated amortization	(847)	(805)
Finite other intangible assets, net	579	599
Trademarks/tradenames
Finite-Lived Intangible Assets [Line Items]
Finite other intangible assets, gross carrying amount	352	352
Finite other intangible assets, accumulated amortization	(342)	(329)
Finite other intangible assets, net	10	23
Customer-related
Finite-Lived Intangible Assets [Line Items]
Finite other intangible assets, gross carrying amount	3,242	3,211
Finite other intangible assets, accumulated amortization	(1,105)	(993)
Finite other intangible assets, net	$ 2,137	$ 2,218