Segment Information Level 4 (Details) - EBITDA by Segment - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Segment Reporting Information [Line Items]
Segment EBITDA [Line Items]	$ 118	$ 95
Epoxy, Phenolic and Coating Resins [Member]
Segment Reporting Information [Line Items]
Segment EBITDA [Line Items]	70	52
Forest Products Resins [Member]
Segment Reporting Information [Line Items]
Segment EBITDA [Line Items]	67	61
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Segment EBITDA [Line Items]	$ (19)	$ (18)