Divestitures and Other Transactions (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2014 GLS/Vinyls [Member]	Jun. 30, 2014 Performance Chemicals [Member]	Jun. 30, 2014 Performance Chemicals [Member]	Jun. 30, 2013 Performance Coatings [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Pre-tax gain on sale of business, continuing operations	$ 391	$ 391
After-tax gain on sale of business, continuing operations		273
Separation related transaction costs			35	51
Pre-tax gain on sale of discontinued operation					2,682
After-tax gain on sale of discontinued operation					$ 1,943