EARNINGS PER SHARE ("EPS") AND EQUITY Schedule of Changes in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive loss	$ 44	$ 45	$ 32	$ 35
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(12)	(10)
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive loss	18	36	8	30
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(10)	(6)
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Including Portion Attributable to Noncontrolling Interest [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive loss	(3)	(3)	3	(3)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	0	0
Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive loss	29	12	$ 27	$ 8
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	$ (2)	$ (4)