Operating Segment Information - Geographic Area Data (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Geographic Area Data
Net sales	$ 429.5	$ 404.5	$ 1,257.0	$ 1,157.8
United States
Geographic Area Data
Net sales	106.7	115.8	319.3	336.4
CANADA
Geographic Area Data
Net sales	12.1	11.8	36.0	34.1
Total North America
Geographic Area Data
Net sales	118.8	127.6	355.3	370.5
Europe Middle East Africa
Geographic Area Data
Net sales	173.2	171.6	485.8	472.4
Asia Pacific
Geographic Area Data
Net sales	119.6	76.7	335.0	231.9
Latin America
Geographic Area Data
Net sales	$ 17.9	$ 28.6	$ 80.9	$ 83.0