Goodwill and Other Intangible Assets - Changes in goodwill by reportable segment (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Goodwill
Balance at the beginning of the period	$ 235.1	$ 232.5
Foreign currency impact	(0.3)	2.6
Balance at the end of the period	234.8	235.1
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	68.6	66.0
Foreign currency impact	(0.3)	2.6
Balance at the end of the period	$ 68.3	$ 68.6