PENSION BENEFITS - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Recorded expenses for defined benefit plans	$ 24	$ 18	$ 11
Assumptions used calculating the expected return on plan assets, market-related value	25.00%
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	$ 14
Mexico
Defined Benefit Plan Disclosure [Line Items]
Weighted-average expected long-term rate of return on plan assets	8.00%
United Kingdom
Defined Benefit Plan Disclosure [Line Items]
Weighted-average expected long-term rate of return on plan assets	5.39%
Other Postretirement Benefits Plan
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation	$ 1	1
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment	(15)	0	0
Benefit obligation	1,555	$ 1,442	$ 1,604
Actuarial loss that will be amortized from AOCI in 2018	$ 8
Weighted-average expected long-term rate of return on plan assets	5.40%	5.50%	5.50%
Benefit plan, expected future employer contributions, current fiscal year	$ 43