SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION (Components of Postretirement Benefit Expense) (Details) (Postretirement benefit expense [Member], USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Postretirement benefit expense [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0	$ 1	$ 1
Interest cost	3	4	10	11
Actuarial loss	2	2	4	5
Amortization of prior service credit	(3)	(6)	(10)	(18)
Net periodic benefit expense	$ 2	$ 0	$ 5	$ (1)