INCOME TAXES (Schedule of Deferred Tax Balances) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Income Tax Expense (Benefit), Continuing Operations [Abstract]
Deferred Tax Assets, Property, Plant and Equipment	$ 0	$ 0
Deferred Tax Assets, Operating Loss and Tax Credit Carryforwards	47	53
Postretirement benefit obligations, Deferred Tax Assets	251	442
Other accruals and reserves, Deferred Tax Assets	349	611
Inventory, Deferred Tax Assets	8	14
Other - net, deferred tax assets	9	13
Subtotal, deferred tax assets	(664)	(1,133)
Valuation allowances, deferred tax assets	(19)	(20)
Total, deferred tax assets	645	1,113
Property, Deferred Tax Liabilities	132	183
Tax loss and credit carryforwards, Deferred Tax Liabilities,	0	0
Postretirement benefit obligations, Deferred Tax Liabilities	0	0
Other accruals and reserves, Deferred Tax Liabilities	1	0
Inventory, deferred tax liabilities	0	0
Other - net, deferred tax liabilities	1	2
Total, deferred tax liabilities	134	185
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries	9	$ 36
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability	$ 97