PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Defined Benefit Pension Plans [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	$ 8	$ 7	$ 16	$ 14
Interest cost	41	47	82	94
Expected return on plan assets	(58)	(59)	(116)	(118)
Amortization of prior service cost	2	2	4	4
Amortization of net loss	22	15	44	30
Net periodic benefit cost	15	12	30	24
Other Postretirement Benefits [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Interest cost	4	4	8	8
Net periodic benefit cost	$ 4	$ 4	$ 8	$ 8