PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS - Funded Status of Our Pension and Other Postretirement Benefit Plans (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Current liabilities	$ (57)	$ (58)
Pension
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	35	2
Current liabilities	(22)	(21)
Noncurrent liabilities	(233)	(1,534)
Funded status	(220)	(1,553)
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	0	0
Current liabilities	(35)	(37)
Noncurrent liabilities	(283)	(396)
Funded status	$ (318)	$ (433)