Acquisitions, Dispositions and Plant Closures Plant Closures (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020
Restructuring Cost and Reserve [Line Items]
Asset impairments		$ 1	$ 4
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property		5	0
Plant Office Closures		(9)	$ 1
Europe [Member] | Engineered Materials
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Accelerated Depreciation		2
Plant Shutdown Costs		(7)
Restructuring and Related Cost, Expected Cost		22
Plant Office Closures	[1]	$ (9)

[1] Included in Other (charges) gains, net in the unaudited interim consolidated statement of operations (Note 12).