Operating Segment Information - Geographic Area Data (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Geographic Area Data
Net sales	$ 431.5	$ 398.0
United States
Geographic Area Data
Net sales	112.4	103.7
CANADA
Geographic Area Data
Net sales	13.6	12.0
Total North America
Geographic Area Data
Net sales	126.0	115.7
Europe Middle East Africa
Geographic Area Data
Net sales	178.7	148.7
Asia Pacific
Geographic Area Data
Net sales	100.2	99.9
Latin America
Geographic Area Data
Net sales	$ 26.6	$ 33.7