PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Other Postretirement Benefits) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Employer Group Waiver Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial gain included in accumulated other comprehensive loss	$ 250
Reduction in postretirement benefit obligation	250
Decrease in net periodic benefit costs in next twelve months	25
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total recognized in net periodic benefit cost and other comprehensive income (loss)	(307)	280	129
United States Postretirement Benefit Plan of US Entity, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Effect of One Percentage Point Increase on Accumulated Postretirement Benefit Obligation	25
Defined Benefit Plan, Effect of One Percentage Point Increase On Net Periodic Postretirement Benefit Cost	1
Discount rate - benefit obligations	4.37%	3.67%	4.66%
Initial health care cost trend rate - benefit obligations	7.45%	7.84%	8.28%
Ultimate health care cost trend rate - benefit obligations	5.00%	5.00%	5.00%
Year ultimate trend rate to be reached - benefit obligations	2020	2019	2019
Discount rate - net periodic costs	3.67%	4.66%	5.15%
Expected long-term rate of return on plan assets - net periodic costs	0.00%	1.00%	3.60%
Initial health care cost trend rate - net periodic costs	7.84%	8.28%	8.70%
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	2020	2019	2019
Defined benefit plan effect of one percentage point decrease on accumulated postretirement benefit obligation	29
Defined benefit plan effect of one percentage point decrease on net periodic postretirement benefit cost	$ 1