Income Taxes (Significant Components Of Deferred Tax Liabilities And Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Deferred tax liabilities
Property, plant, and equipment	$ 1,612	$ 1,651
Equity in earnings of affiliates	361	306
Debt exchange	132	133
Inventories	41	18
Other	105	109
Deferred Tax Liabilities, Gross	2,251	2,217
Deferred tax assets
Pension and postretirement benefits	307	374
Stock compensation	81	70
Foreign tax credit carryforwards	95	90
Foreign tax loss carryforwards	278	301
Capital loss carryforwards	57	22
State tax attributes	62	62
Deferred Tax Assets, Unrealized Currency Losses	58	71
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Reserves	0	26
Other	18	125
Gross deferred tax assets	956	1,141
Valuation allowances	(216)	(302)
Net deferred tax assets	740	839
Deferred Tax Liabilities, Net, Classification [Abstract]
Noncurrent Liabilities	(1,669)	(1,563)
Net deferred tax liabilities	(1,511)	(1,378)
Domestic Tax Authority [Member]
Deferred Tax Liabilities, Net, Classification [Abstract]
Noncurrent Liabilities	(1,472)	(1,394)
Foreign [Member]
Deferred Tax Liabilities, Net, Classification [Abstract]
Noncurrent assets	158	185
Noncurrent Liabilities	$ (197)	$ (169)