Divestitures and Other Transactions (Schedule of cash flow information of discontinued operations) (Performance Chemicals) (Details) - Performance Chemicals [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Depreciation	$ 126	$ 248	$ 253
Amortization of intangible assets	2	3	6
Purchases of property, plant and equipment	$ 235	$ 525	$ 429