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Acquisitions, Dispositions and Plant Closures Acquisitions, Dispositions and Plant Closures (Details) - Advanced Engineered Materials [Member] - So.F.teR. Group [Member] - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2017
Dec. 01, 2016
Business Acquisition [Line Items]    
Business Acquisition, Percentage of Voting Interests Acquired   100.00%
Goodwill, Purchase Accounting Adjustments $ (3)