Divestitures and Other Transactions (Schedule of assets and liabilities of discontinued operations) (Performance Chemicals) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total assets of discontinued operations	$ 0	$ 6,227
Total liabilities of discontinued operations	$ 0	2,467
Performance Chemicals [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accounts and notes receivable, net		887
Inventories		1,054
Prepaid expenses		15
Deferred income taxes - current		53
Property, plant and equipment, net of accumulated depreciation		3,378
Goodwill		197
Other intangible assets		11
Investment in affiliates		124
Deferred income taxes - noncurrent		42
Other assets - noncurrent		466
Total assets of discontinued operations		6,227
Accounts payable		1,036
Income taxes		9
Other accrued liabilities		373
Other liabilities - noncurrent		616
Deferred income taxes - noncurrent		433
Total liabilities of discontinued operations		$ 2,467