Property, Plant and Equipment (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
PROPERTY, PLANT AND EQUIPMENT
Total		$ 2,492	$ 2,404
Less accumulated depreciation		(1,503)	(1,410)
Property, plant, and equipment—net	[1]	989	994
Depreciation expense		106	129	$ 124
Land and land improvements
PROPERTY, PLANT AND EQUIPMENT
Total		97	98
Buildings
PROPERTY, PLANT AND EQUIPMENT
Total		241	236
Plant and equipment
PROPERTY, PLANT AND EQUIPMENT
Total		1,974	1,926
Construction in progress
PROPERTY, PLANT AND EQUIPMENT
Total		$ 180	$ 144

[1] At December 31, 2019 and December 31, 2018, the following amounts from consolidated variable interest entities are included in the respective balance sheet captions above: $2 and $5 of cash and cash equivalents; $4 and $5 of accounts receivable, net; $2 and $1 of inventories; $5 each of property, plant and equipment, net; $1 and nil of operating lease right-of-use assets; $11 and $14 of intangible assets, net; $1 each of accounts payable; $3 and $4 of accrued liabilities; $1 and nil of operating lease liabilities; and nil and $2 of current portion of debt. See "Note 9. Variable Interest Entities."