Income Taxes (Schedule of Temporary Differences of Tax Effects to Deferred Income Tax Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Deferred income tax assets:
Accrued postretirement and postemployment benefits	$ 184	$ 193
Accrued pension costs	620	390
Inventory	176	136
Accrued liabilities	130	138
Net operating loss carryforwards and tax credits	486	452
Other	101	37
Total deferred income tax assets	1,697	1,346
Less: valuation allowance	(304)	(257)
Total deferred income tax assets	1,393	1,089
Deferred income tax liabilities:
Trade names	(469)	(508)
Property, plant and equipment	(180)	(222)
Unremitted earnings	(243)	(123)
Foreign exchange	(256)	(157)
Total deferred income tax liabilities	(1,148)	(1,010)
Net deferred income tax assets	$ 245	$ 79