GOODWILL AND INTANGIBLE ASSETS - GOODWILL CARRYING AMOUNT (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Goodwill [Line Items]
Gross Carrying Amount	$ 6,879	$ 6,134
Cumulative Impairment	(2,893)	(2,737)
Net Carrying Amount	3,986	3,397	$ 3,431
Technologies & Equipment
Goodwill [Line Items]
Gross Carrying Amount	5,985	5,253
Cumulative Impairment	(2,893)	(2,737)
Net Carrying Amount	3,092	2,516	2,545
Consumables
Goodwill [Line Items]
Gross Carrying Amount	894	881
Cumulative Impairment	0	0
Net Carrying Amount	$ 894	$ 881	$ 886