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GOODWILL AND INTANGIBLE ASSETS - NARRATIVE (Details) - USD ($) $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Goodwill [Line Items]
Goodwill impairment	$ 0		$ 0		$ 0	$ 157
Indefinite-lived intangible asset impairment					0	$ 39
Developed technology and patents
Goodwill [Line Items]
Payments to acquire intangible assets		$ 3
Asset Acquisition, Contingent Consideration, Liability	$ 17				$ 17
Technologies & Equipment
Goodwill [Line Items]
Goodwill impairment				$ 157
Technologies & Equipment \| Equipment and Instruments Reporting Unit
Goodwill [Line Items]
Indefinite-lived intangible asset impairment				$ 39