Divestitures and Other Transactions (Schedule of results of operations from discontinued operations) (Performance Chemicals) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Loss) income from discontinued operations after income taxes	$ 4	$ 64	$ 491
Performance Chemicals [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales	0	2,810	6,317
Costs of goods sold	0	2,215	4,680
Other operating charges	36	386	422
Selling, general and administrative expenses	0	(87)	453
Research and development expense	0	40	109
Other income, net	(3)	(27)	(46)
Interest expense	0	32	0
Employee separation / asset related charges, net	0	59	21
(Loss) income from discontinued operations before income taxes	(33)	192	678
(Benefit from) provision for income taxes	(28)	106	202
(Loss) income from discontinued operations after income taxes	$ (5)	$ 86	$ 476