EMPLOYEE BENEFIT PLANS - 1% HIGHER OR LOWER TREND RATE IN HEALTH CARE (DETAILS) (Postretirement Medical Benefits [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Postretirement Medical Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Change in service and interest cost, 1% higher trend rate	$ 1	$ 2	$ 2
Change in service and interes cost, 1% lower trend rate	(1)	(1)	(2)
Change in year-end postretirement benefit obligation, 1% higher trend rate	10	14	14
Change in year-end postretirement benefit obligation, 1% lower trend rate	$ (9)	$ (12)	$ (13)