Segment Information (Reconciliation of Other Items) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Depreciation and amortization		$ 1,258	$ 1,466	$ 1,617
Equity in earnings (losses) of affiliates, net		99	49	(36)
Affiliate net assets		649	688	762
Purchases of property, plant and equipment		1,019	1,629	2,020
Segment Totals [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization		1,113	1,177	1,214
Equity in earnings (losses) of affiliates, net		99	47	(37)
Affiliate net assets		649	688	761
Purchases of property, plant and equipment		879	970	1,100
Corporate and Discontinued Operations [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization	[1]	145	289	403
Equity in earnings (losses) of affiliates, net	[1]	0	2	1
Affiliate net assets	[1]	0	0	1
Purchases of property, plant and equipment	[1]	$ 140	$ 659	$ 920

[1] Adjustments include amounts related to Corporate in all periods presented, and to the Performance Chemicals business in 2015 and 2014, as it met the criteria for discontinued operations during 2015. See Note 1 for additional information on the presentation of discontinued operations and See Note 3 for depreciation, amortization and purchases of property, plant and equipment related to Performance Chemicals for the years ended December 31, 2015 and 2014.