Goodwill and Intangible Assets - Intangible Assets by Major Class (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Schedule of Intangible Assets by Major Class [Line Items]
Cost	$ 81.1	$ 83.2
Accumulated amortization	(58.1)	(52.7)
Net	23.0	30.5
Patents and licensing
Schedule of Intangible Assets by Major Class [Line Items]
Cost	25.1	25.9
Accumulated amortization	(19.4)	(17.9)
Net	5.7	8.0
Technology
Schedule of Intangible Assets by Major Class [Line Items]
Cost	3.3	3.3
Accumulated amortization	(2.0)	(1.7)
Net	1.3	1.6
Trademarks
Schedule of Intangible Assets by Major Class [Line Items]
Cost	2.0	2.0
Accumulated amortization	(1.9)	(1.8)
Net	0.1	0.2
Customer relationships
Schedule of Intangible Assets by Major Class [Line Items]
Cost	40.1	40.9
Accumulated amortization	(25.4)	(23.4)
Net	14.7	17.5
Customer contracts
Schedule of Intangible Assets by Major Class [Line Items]
Cost	10.6	11.1
Accumulated amortization	(9.4)	(7.9)
Net	$ 1.2	$ 3.2