Other (Charges) Gains, Net (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	[1]	Sep. 30, 2015
Restructuring Cost and Reserve [Line Items]
Employee termination benefits	$ (3)	$ (6)	$ (11)		$ (20)
Meredosia, IL [Member] | Industrial Specialties [Member] | Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Accelerated Depreciation		6
Tarragona, Spain [Member] | Industrial Specialties [Member] | Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Accelerated Depreciation		$ 4

[1] Includes $3 million of special termination benefits included in Benefit obligations in the unaudited consolidated balance sheets.