SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION (Components of Postretirement Benefit Expense) (Details) (Postretirement benefit expense [Member], USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Postretirement benefit expense [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1	$ 1	$ 1	$ 1
Interest cost	3	3	7	7
Actuarial loss	1	0	2	3
Amortization of prior service credit	(4)	(6)	(7)	(12)
Net periodic benefit expense	$ 1	$ (2)	$ 3	$ (1)