Segment Information - Schedule of Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Segment Reporting Information [Line Items]
Sales	$ 609.1	$ 748.2	$ 1,320.6	$ 1,498.8
Operating Income	38.0	46.1	90.8	93.2
Total assets	4,337.0		4,337.0		$ 3,273.3
Corporate and eliminations before intersegment eliminations
Segment Reporting Information [Line Items]
Sales	2.3	0.0	5.8	0.0
Corporate and eliminations
Segment Reporting Information [Line Items]
Sales	(15.3)	(21.2)	(35.1)	(41.1)
Operating Income	(25.9)	(41.2)	(55.3)	(73.6)
Corporate and eliminations | Continuing Operations
Segment Reporting Information [Line Items]
Total assets	2,144.7		2,144.7		1,047.9
Color, Additives and Inks
Segment Reporting Information [Line Items]
Sales	225.9	266.0	481.3	528.1
Color, Additives and Inks | Operating Segments
Segment Reporting Information [Line Items]
Sales	226.8	267.5	483.3	530.8
Operating Income	32.3	42.3	72.8	81.8
Color, Additives and Inks | Operating Segments | Continuing Operations
Segment Reporting Information [Line Items]
Total assets	1,193.9		1,193.9		1,215.8
Specialty Engineered Materials
Segment Reporting Information [Line Items]
Sales	146.3	180.3	315.5	356.1
Specialty Engineered Materials | Operating Segments
Segment Reporting Information [Line Items]
Sales	158.8	195.3	344.1	385.2
Operating Income	17.0	24.9	39.3	45.4
Specialty Engineered Materials | Operating Segments | Continuing Operations
Segment Reporting Information [Line Items]
Total assets	755.6		755.6		774.0
Distribution
Segment Reporting Information [Line Items]
Sales	234.6	301.9	518.0	614.6
Distribution | Operating Segments
Segment Reporting Information [Line Items]
Sales	238.8	306.6	528.3	623.9
Operating Income	14.6	$ 20.1	34.0	$ 39.6
Distribution | Operating Segments | Continuing Operations
Segment Reporting Information [Line Items]
Total assets	$ 242.8		$ 242.8		$ 235.6