Segment Information Level 4 (Details) - EBITDA by Segment - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Segment EBITDA [Line Items]	$ 440	$ 365	$ 433
EPCD [Member]
Segment Reporting Information [Line Items]
Segment EBITDA [Line Items]	226	174	258
FPD [Member]
Segment Reporting Information [Line Items]
Segment EBITDA [Line Items]	285	257	240
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Segment EBITDA [Line Items]	$ (71)	$ (66)	$ (65)