Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Deferred Sales Commissions
Revenue recognized out of adjusted deferred revenue balance	$ 12.8	$ 10.8
Total net capitalized costs	36.8		$ 30.4
Amortization of capitalized costs of obtaining a contract	$ 2.0	$ 0.7
Incremental commission costs of obtaining new contracts
Deferred Sales Commissions
Amortization period for deferred incremental commission costs of obtaining new contracts	5 years