Intangible Assets - Components of Intangible Assets (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 316.5	$ 199.4
Accumulated Amortization	(44.1)	(28.3)
Total	272.4	171.1
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	100.0	97.7
Accumulated Amortization	(19.2)	(14.7)
Total	80.8	83.0
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	215.5	101.7
Accumulated Amortization	(24.8)	(13.6)
Total	190.7	88.1
Tradename
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	1.0	0.0
Accumulated Amortization	(0.1)	0.0
Total	$ 0.9	$ 0.0