Goodwill and Other Intangible Assets - Changes in goodwill by reportable segment (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Goodwill
Balance at the beginning of the period	$ 232,800,000	$ 321,300,000
Foreign currency impact	(300,000)	(6,300,000)
Goodwill impairment	0	(82,200,000)
Net balance at the end of the period	232,500,000	232,800,000
Americas
Goodwill
Balance at the beginning of the period	166,500,000	166,500,000
Net balance at the end of the period	166,500,000	166,500,000
Europe and Africa ("EURAF")
Goodwill
Balance at the beginning of the period		85,900,000
Foreign currency impact		(3,700,000)
Goodwill impairment		(82,200,000)
Middle East and Asia Pacific ("MEAP")
Goodwill
Balance at the beginning of the period	66,300,000	68,900,000
Foreign currency impact	(300,000)	(2,600,000)
Net balance at the end of the period	$ 66,000,000.0	$ 66,300,000