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Divestitures and Other Transactions (Schedule of cash flow information of discontinued operations) (Details) - Performance Chemicals [Member]
$ in Millions
6 Months Ended
Jun. 30, 2015
USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]  
Depreciation $ 126
Amortization of intangible assets 1
Purchases of property, plant and equipment $ 235