EMPLOYEE BENEFIT PLANS (Components of Net Periodic Benefit Cost) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service Cost	$ 13	$ 15	$ 13
Non-Service Cost
Interest Cost	18	16	15
Expected Return on Plan Assets	(26)	(28)	(25)
Amortization of Net (Gain) Loss	8	7	8
Net Periodic Benefit Cost	13	10	11
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service Cost	4	5	4
Non-Service Cost
Interest Cost	3	2	2
Expected Return on Plan Assets	(2)	(1)	(1)
Amortization of Net (Gain) Loss	0	0	0
Net Periodic Benefit Cost	$ 5	$ 6	$ 5