PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Other Postretirement Benefits) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate - benefit obligations	3.85%	4.85%	5.35%
Discount rate - net periodic costs	4.85%	5.35%	5.85%
Rate of increase in future compensation levels - benefit obligations	4.50%	4.50%	4.50%
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%
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate - benefit obligations	3.65%	4.60%	5.10%
Initial health care cost trend rate - benefit obligations	7.85%	8.30%	8.72%
Ultimate health care cost trend rate - benefit obligations	5.00%	5.00%	5.00%
Year ultimate trend rate to be reached - benefit obligations	2019	2019	2019
Discount rate - net periodic costs	4.60%	5.10%	5.60%
Initial health care cost trend rate - net periodic costs	8.30%	8.72%	9.17%
Ultimate health care cost trend rate - net periodic costs	5.00%	5.00%	5.00%
Year ultimate trend rate to be reached - net periodic costs	2019	2019	2019
Defined Benefit Plan, Effect of One Percentage Point Increase on Accumulated Postretirement Benefit Obligation	5
Defined Benefit Plan, Effect of One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation	5