Cloud Computing Costs (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Short-term portion	$ 17.3		$ 17.3		$ 18.4
Long-term portion	78.7		78.7		49.2
Total capitalized implementation costs	96.0		96.0		67.6
Less: accumulated amortization	(13.2)		(13.2)		(4.4)
Capitalized implementation costs, net	82.8		82.8		$ 63.2
Capitalized implementation costs, amortization	$ 3.8	$ 0.8	$ 8.8	$ 2.1
Minimum | Cloud Computing Costs
Finite-Lived Intangible Assets [Line Items]
Expected term			3 years
Maximum | Cloud Computing Costs
Finite-Lived Intangible Assets [Line Items]
Expected term			5 years