Income Taxes (Components of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Employee benefits	$ 127	$ 106
Accrued expenses	35	26
Loss and other tax credit carryforwards	270	240
Inventory	6	6
Lease Liabilities	64	57
Other	41	3
Total deferred tax assets	543	438
Valuation allowance	(217)	(191)
Net deferred tax asset	326	247
Deferred tax liabilities:
Intangibles	138	160
Investment in foreign subsidiaries	5	7
Property, plant and equipment	77	78
Lease right-of-use assets	62	57
Other	30	29
Total deferred tax liabilities	$ 312	$ 331