PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS - Amounts Recognized in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
U.S. Postretirement Benefit Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Unrecognized actuarial losses	$ (1)	$ (4)	$ (6)
Unrecognized prior service credits	17	20	23
U.S. Plan | Pension Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Unrecognized actuarial losses	(31)	(18)	(26)
Unrecognized prior service credits	0	0	0
Non-U.S. Plans | Pension Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Unrecognized actuarial losses	(50)	(56)	(61)
Unrecognized prior service credits	$ 27	$ 29	$ 26