Segment Information - Geographic Area Data (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Geographic Area Data
Net sales	$ 485.7	$ 429.5	$ 917.2	$ 827.5
United States
Geographic Area Data
Net sales	138.1	108.8	250.5	212.6
Canada
Geographic Area Data
Net sales	9.3	12.0	22.9	23.9
Total North America
Geographic Area Data
Net sales	147.4	120.8	273.4	236.5
Europe Middle East Africa
Geographic Area Data
Net sales	185.4	163.9	364.1	312.6
Asia Pacific
Geographic Area Data
Net sales	124.1	115.5	224.3	215.4
Latin America
Geographic Area Data
Net sales	$ 28.8	$ 29.3	$ 55.4	$ 63.0