Operating Segment and Geographic Information - Geographic Area Data (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Net sales	$ 266.9	$ 296.3	$ 755.2	$ 849.3
Operating lease right-of-use assets	34.0		34.0		$ 0.0
Specialty Construction Chemicals
Segment Reporting Information [Line Items]
Net sales	151.8	165.4	433.9	487.4
Specialty Building Materials
Segment Reporting Information [Line Items]
Net sales	115.1	130.9	321.3	361.9
Total North America
Segment Reporting Information [Line Items]
Net sales	143.9	154.1	393.2	426.4
Operating lease right-of-use assets	12.8		12.8
United States
Segment Reporting Information [Line Items]
Net sales	134.8	144.4	369.2	402.4
Operating lease right-of-use assets	12.6		12.6
Canada and Other
Segment Reporting Information [Line Items]
Net sales	9.1	9.7	24.0	24.0
Operating lease right-of-use assets	0.2		0.2
Europe Middle East Africa
Segment Reporting Information [Line Items]
Net sales	50.7	61.7	149.4	189.2
Operating lease right-of-use assets	12.0		12.0
Asia Pacific
Segment Reporting Information [Line Items]
Net sales	56.8	63.9	166.4	181.6
Operating lease right-of-use assets	8.1		8.1
Latin America
Segment Reporting Information [Line Items]
Net sales	15.5	$ 16.6	46.2	$ 52.1
Operating lease right-of-use assets	1.1		1.1
Operating Segments | Specialty Construction Chemicals
Segment Reporting Information [Line Items]
Operating lease right-of-use assets	17.7		17.7
Operating Segments | Specialty Building Materials
Segment Reporting Information [Line Items]
Operating lease right-of-use assets	13.4		13.4
Corporate
Segment Reporting Information [Line Items]
Operating lease right-of-use assets	$ 2.9		$ 2.9