GOODWILL AND OTHER INTANGIBLE ASSETS - Summary of Other Intangible Assets (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Finite other intangible assets, gross carrying amount	$ 15,741	$ 16,065
Finite other intangible assets, accumulated amortization	(5,812)	(4,143)
Finite other intangible assets, net	9,929	11,922
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets (Excluding Goodwill)	1,599	1,671
Intangible Assets, Gross (Excluding Goodwill)	17,340	17,736
Other intangible assets, net	11,528	13,593
Trademarks / tradenames
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets (Excluding Goodwill)	1,599	1,671
Developed technology
Finite-Lived Intangible Assets [Line Items]
Finite other intangible assets, gross carrying amount	4,229	4,343
Finite other intangible assets, accumulated amortization	(1,705)	(1,361)
Finite other intangible assets, net	2,524	2,982
Trademarks / tradenames
Finite-Lived Intangible Assets [Line Items]
Finite other intangible assets, gross carrying amount	2,395	2,433
Finite other intangible assets, accumulated amortization	(1,378)	(455)
Finite other intangible assets, net	1,017	1,978
Customer-related
Finite-Lived Intangible Assets [Line Items]
Finite other intangible assets, gross carrying amount	8,942	8,986
Finite other intangible assets, accumulated amortization	(2,644)	(2,229)
Finite other intangible assets, net	6,298	6,757
Other Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Finite other intangible assets, gross carrying amount	175	303
Finite other intangible assets, accumulated amortization	(85)	(98)
Finite other intangible assets, net	$ 90	$ 205