EMPLOYEE BENEFIT PLANS (Components of Net Periodic Benefit Cost) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service Cost	$ 12	$ 12	$ 10
Interest Cost	15	17	16
Expected Return on Plan Assets	(23)	(23)	(21)
Amortization of Net Loss	7	7	3
Net Periodic Benefit Cost	11	13	8
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service Cost	4	4	4
Interest Cost	2	3	3
Expected Return on Plan Assets	(1)	(1)	(1)
Amortization of Net Loss	0	0	0
Net Periodic Benefit Cost	$ 5	$ 6	$ 6