Restructuring and Asset Related Charges, Net (Segment Earnings) (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring and asset related charges, net	$ 14,000		$ 139,000	$ 41,000	$ 200,000
2015 Global Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and asset related charges, net	1,000	$ 48,000	3,000	5,000	64,000
Plant and Product Line Closures [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and asset related charges, net	13,000		136,000	36,000	136,000
Operating Segments [Member] | Titanium Technologies [Member] | 2015 Global Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and asset related charges, net	0		1,000	2,000	24,000
Operating Segments [Member] | Titanium Technologies [Member] | Plant and Product Line Closures [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and asset related charges, net	5,000		126,000	24,000	126,000
Operating Segments [Member] | Fluoroproducts [Member] | 2015 Global Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and asset related charges, net	1,000		1,000	3,000	26,000
Operating Segments [Member] | Fluoroproducts [Member] | Plant and Product Line Closures [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and asset related charges, net	1,000		10,000	6,000	10,000
Operating Segments [Member] | Chemical Solutions [Member] | 2015 Global Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and asset related charges, net	0		1,000	0	14,000
Operating Segments [Member] | Chemical Solutions [Member] | Plant and Product Line Closures [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and asset related charges, net	$ 7,000		0	$ 6,000	0
Corporate and Other [Member] | 2015 Global Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and asset related charges, net			$ 13,000		$ 13,000