Goodwill and Other Intangible Assets - Changes in goodwill by reportable segment (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Goodwill
Balance at the beginning of the period	$ 232.5	$ 232.8
Foreign currency impact	(2.2)	(0.3)
Balance at the end of the period	230.3	232.5
Americas
Goodwill
Balance at the beginning of the period	166.5	166.5
Balance at the end of the period	166.5	166.5
Middle East and Asia Pacific ("MEAP")
Goodwill
Balance at the beginning of the period	66.0	66.3
Foreign currency impact	(2.2)	(0.3)
Balance at the end of the period	$ 63.8	$ 66.0