RESTRUCTURING AND OTHER EXIT COSTS (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($) country	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and other exit costs	$ 149	$ 0	$ 0
Noncash restructuring and other exit costs	7
Estimated additional restructuring expenses	$ 40
Minimum
Restructuring Cost and Reserve [Line Items]
Number of countries in which restructuring actions have taken place | country	60
Accrued expenses and other current liabilities
Restructuring Cost and Reserve [Line Items]
Restructuring liabilities	$ 37