Income Taxes (Significant Components Of Deferred Tax Liabilities And Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Deferred tax liabilities
Property, plant, and equipment	$ 1,074	$ 1,079
Equity in earnings of affiliates	70	91
Debt exchange	81	83
Inventories	25	4
Other	83	79
Deferred Tax Liabilities, Gross	1,333	1,336
Deferred tax assets
Pension and postretirement benefits	122	126
Stock compensation	55	52
Foreign tax loss carryforwards	313	254
Capital loss carryforwards	55	64
State tax attributes	74	78
Deferred Tax Assets, Unrealized Currency Losses	48	103
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Reserves	18	17
Other	56	40
Gross deferred tax assets	741	734
Valuation allowances	(289)	(264)
Net deferred tax assets	452	470
Deferred Tax Liabilities, Net, Classification [Abstract]
Net deferred tax liabilities	(881)	(866)
Domestic Tax Authority [Member]
Deferred Tax Liabilities, Net, Classification [Abstract]
Noncurrent Liabilities	(929)	(934)
Foreign [Member]
Deferred Tax Liabilities, Net, Classification [Abstract]
Noncurrent assets	186	187
Noncurrent Liabilities	$ (138)	$ (119)