Income Taxes (Significant Components Of Deferred Tax Liabilities And Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Deferred tax liabilities
Property, plant, and equipment	$ 1,651	$ 1,717
Equity in earnings of affiliates	306	394
Debt exchange	133	135
Inventories	18	57
Other	109	192
Deferred Tax Liabilities, Gross	2,217	2,495
Deferred tax assets
Pension and postretirement benefits	374	460
Stock compensation	70	55
Foreign tax credit carryforwards	90	76
Foreign tax loss carryforwards	301	305
Capital loss carryforwards	22	21
State tax attributes	62	70
Deferred Tax Assets, Unrealized Currency Losses	71	86
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Reserves	26	43
Other	125	271
Gross deferred tax assets	1,141	1,387
Valuation allowances	(302)	(347)
Net deferred tax assets	839	1,040
Deferred Tax Liabilities, Net, Classification [Abstract]
Deferred Tax Assets, Net, Current	185
Current liabilities	(17)
Noncurrent Liabilities	(1,563)	(1,662)
Net deferred tax liabilities	(1,378)	(1,455)
Domestic Tax Authority [Member]
Deferred tax assets
Valuation allowances			$ (41)
Deferred Tax Liabilities, Net, Classification [Abstract]
Deferred Tax Assets, Net, Current	0	17
Noncurrent Liabilities	(1,394)	(1,316)
Foreign [Member]
Deferred Tax Liabilities, Net, Classification [Abstract]
Deferred Tax Assets, Net, Current	0	137
Noncurrent assets	185	86
Current liabilities	0	(33)
Noncurrent Liabilities	$ (169)	$ (346)