Acquisitions, Dispositions and Plant Closures (Schedule of Business Acquisitions, by Acquisition) (Details) - USD ($)		Dec. 31, 2016	[1]	Dec. 01, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Business Acquisition, Goodwill, Expected Tax Deductible Amount				$ 0
Goodwill		$ 796,000,000			$ 705,000,000	$ 749,000,000
Advanced Engineered Materials [Member]
Business Acquisition [Line Items]
Goodwill		$ 385,000,000			$ 282,000,000	$ 295,000,000
SO.F.TER. S.p.A. [Member]
Business Acquisition [Line Items]
Cash and cash equivalents				11,000,000
Trade receivables - third party and affiliates				53,000,000
Inventories				58,000,000
Property, plant and equipment, net				68,000,000
Intangible assets (Note 11)				79,000,000
Goodwill	[2]			106,000,000
Other assets(2)	[3]			33,000,000
Total fair value of assets acquired				408,000,000
Trade payables - third party and affiliates				(41,000,000)
Total debt (Note 14)				(103,000,000)
Deferred income taxes				(30,000,000)
Other liabilities				(45,000,000)
Total fair value of liabilities assumed				(219,000,000)
Net assets acquired				189,000,000
Indemnity for uncertain tax positions [Member] | SO.F.TER. S.p.A. [Member]
Business Acquisition [Line Items]
Other assets(2)	[3]			$ 23,000,000

[1] There were $0 million of accumulated impairment losses as of December 31, 2016.

[2] Goodwill consists of expected revenue and operating synergies resulting from the acquisition. None of the goodwill is deductible for income tax purposes.

[3] Includes a $23 million indemnity receivable for uncertain tax positions related to the acquisition.