Customer Contracts - Schedule of Amortization of Capitalized Contract Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Amortization of capitalized sales commissions
Capitalized Contract Cost [Line Items]
Capitalized contract cost, amortization	$ 43.7	$ 44.2	$ 40.9
Amortization of capitalized implementation costs
Capitalized Contract Cost [Line Items]
Capitalized contract cost, amortization	$ 18.1	$ 17.4	$ 14.8