GOODWILL AND OTHER INTANGIBLE ASSETS - Summary of Other Intangible Assets (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 7,604	$ 7,601
Finite-Lived Intangible Assets, Accumulated Amortization	3,748	3,379
Finite-Lived Intangible Assets, Net	3,856	4,222
Intangible Assets, Gross (Excluding Goodwill)	7,607	7,604
Other intangible assets	3,859	4,225
Developed technology
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	2,633	2,634
Finite-Lived Intangible Assets, Accumulated Amortization	1,414	1,252
Finite-Lived Intangible Assets, Net	1,219	1,382
Software
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	1,434	1,404
Finite-Lived Intangible Assets, Accumulated Amortization	867	805
Finite-Lived Intangible Assets, Net	567	599
Trademarks/tradenames
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	352	352
Finite-Lived Intangible Assets, Accumulated Amortization	342	329
Finite-Lived Intangible Assets, Net	10	23
Customer-related
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	3,185	3,211
Finite-Lived Intangible Assets, Accumulated Amortization	1,125	993
Finite-Lived Intangible Assets, Net	2,060	2,218
In-process research and development
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets (Excluding Goodwill)	$ 3	$ 3