Properties, Plants, and Equipment, net (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 5,056		$ 5,010
Less: accumulated depreciation and amortization	2,736		2,626
Properties, plants and equipment excluding construction work in progress	2,320		2,384
Construction work-in-progress	163		208
Properties, plants, and equipment, net	2,483		2,592
Capital expenditures incurred but not yet paid	42	$ 29
Land and land rights
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	92		98
Structures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,024		1,033
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 3,940		$ 3,879