PENSION AND POSTRETIREMENT BENEFIT PLANS (Actuarial Assumptions) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Pension, Postretirement And Postemployment Liabilities Statement [Line Items]
The amount by which the market-related value of plan assets exceeded the fair value as of the balance sheet date	$ 225
Percentage of the higher of the market-related value or projected benefit obligation corridor not amortized	10.00%
Net actuarial loss and prior service cost expected to be amortized from accumulated other comprehensive income into net periodic benefit cost during 2016	$ 70
United States Postretirement Benefit Plan of US Entity, Defined Benefit [Member]
Pension, Postretirement And Postemployment Liabilities Statement [Line Items]
Expected weighted-average remaining lives of plan participants, which is the period over which actuarial gain/loss is amortized	35 years
Pension Plans, Defined Benefit [Member]
Pension, Postretirement And Postemployment Liabilities Statement [Line Items]
Discount rate used to determine benefit obligations	3.80%	3.60%
Rate of compensation increase used to determine benefit obligations	0.50%	0.80%
Discount rate used to determine net periodic benefit cost	3.60%	4.20%	4.10%
Expected long-term return on plan assets used to determine net periodic benefit cost	7.20%	7.60%	8.00%
Rate of compensation increase used to determine net periodic benefit cost	0.80%	2.30%	2.30%
Historical long-term annualized returns for U.S. pension plans, 10 years	6.70%	7.90%	8.00%
Historical long-term annualized returns for U.S. pension plans, 15 years	6.00%	6.40%	6.80%
Historical long-term annualized returns for U.S. pension plans, 20 years	8.10%	9.30%	8.80%
Other Postretirement Benefit Plans, Defined Benefit [Member]
Pension, Postretirement And Postemployment Liabilities Statement [Line Items]
Discount rate used to determine benefit obligations	3.60%	3.40%
Rate of compensation increase used to determine benefit obligations	2.00%	2.00%
Discount rate used to determine net periodic benefit cost	3.40%	3.70%	3.00%
Expected long-term return on plan assets used to determine net periodic benefit cost	7.80%	8.30%	8.80%
Rate of compensation increase used to determine net periodic benefit cost	2.00%	2.10%	2.10%
Healthcare cost trend rate assumed for next year	5.50%	6.00%	6.40%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	4.50%	4.50%	4.50%