Divestitures and Other Transactions Divestitures and Other Transactions (Schedule of results of operations from discontinued operations) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from discontinued operations after taxes	$ 104	$ 103	$ 89	$ 385
Performance Chemicals [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales	0	1,606	2,810	4,788
Other income, net	0	(7)	27	33
Total	0	1,599	2,837	4,821
Cost of goods sold	0	1,183	2,215	3,530
Other operating charges	59	122	369	300
Selling, general and administrative expenses	(277)	114	(87)	347
Research and development expense	0	28	40	86
Interest expense	0	0	32	0
Employee separation / asset related charges, net	0	0	59	19
Total	(218)	1,447	2,628	4,282
Income from discontinued operations before taxes	218	152	209	539
Provision for income taxes	108	49	114	154
Income from discontinued operations after taxes	$ 110	$ 103	$ 95	$ 385