Segment Information - Geographic Area Data (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Geographic Area Data
Revenues	$ 419.4	$ 470.5	$ 1,259.6	$ 1,453.6
United States
Geographic Area Data
Revenues	108.7	124.1	329.9	395.9
Canada
Geographic Area Data
Revenues	9.9	13.4	34.3	42.0
Total North America
Geographic Area Data
Revenues	118.6	137.5	364.2	437.9
Europe Middle East Africa
Geographic Area Data
Revenues	182.7	195.6	526.2	604.3
Asia Pacific
Geographic Area Data
Revenues	97.7	117.5	310.7	345.4
Latin America
Geographic Area Data
Revenues	$ 20.4	$ 19.9	$ 58.5	$ 66.0