PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Pension Plans) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Defined Benefit Plan Disclosure [Line Items]
Pension contributions	$ 158	$ 48	$ 2
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Projected Benefit Obligation	4,433	4,037
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Accumulated Benefit Obligation	4,383	3,993
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Fair Value of Plan Assets	3,548	3,351
Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Benefit Obligation	4,433	4,037	3,867
Expected pension contributions	$ 160
Discount rate - benefit obligations	3.85%	4.85%	5.35%
Rate of increase in future compensation levels - benefit obligations	4.50%	4.50%	4.50%
Discount rate - net periodic costs	4.85%	5.35%	5.85%
Rate of increase in future compensation levels - net periodic costs	4.50%	4.50%	4.50%
Expected long-term rate of return on plan assets - net periodic costs	6.90%	7.40%	7.40%