Geographic and Segment Information - (Schedule of Net Sales to External Customers by Product Group) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Total net sales to external customers	$ 6,183	$ 5,400	$ 5,717
Divested Business [Member]
Segment Reporting Information [Line Items]
Total net sales to external customers	4	212	431
Titanium Dioxide [Member]
Segment Reporting Information [Line Items]
Total net sales to external customers	2,958	2,364	2,392
Fluoropolymers [member]
Segment Reporting Information [Line Items]
Total net sales to external customers	1,276	1,171	1,246
Fluorochemicals [Member]
Segment Reporting Information [Line Items]
Total net sales to external customers	1,378	1,093	984
Performance Chemicals and Intermediates [Member]
Segment Reporting Information [Line Items]
Total net sales to external customers	306	298	363
Mining Solution [Member]
Segment Reporting Information [Line Items]
Total net sales to external customers	$ 261	$ 262	$ 301