Divestitures and Other Transactions Divestitures and Other Transactions (Schedule of cash flow information of discontinued operations) (Details) - Performance Chemicals [Member] - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Depreciation	$ 126	$ 186
Amortization of intangible assets	2	2
Purchases of property, plant and equipment	$ 235	$ 350