Income Taxes (Schedule of Temporary Differences of Tax Effects to Deferred Income Tax Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Deferred income tax assets:
Accrued postretirement and postemployment benefits	$ 239	$ 287
Accrued pension costs	334	256
Inventory	131	241
Accrued liabilities	117	137
Foreign exchange	91	0
Other	114	173
Total deferred income tax assets	1,026	1,094
Deferred income tax liabilities:
Trade names	(546)	(554)
Property, plant and equipment	(223)	(217)
Unremitted earnings	(49)	(636)
Foreign exchange	0	(725)
Total deferred income tax liabilities	(818)	(2,132)
Net deferred income tax assets	$ 208
Net deferred income tax liabilities		$ (1,038)