v3.20.2
Revenue - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Revenue From Contract With Customer [Abstract]          
Revenue recognized $ 73.3 $ 43.5 $ 121.0 $ 62.9  
Allowance for doubtful accounts receivable deemed uncollectible 0.9 0.2 0.9 0.2  
Unbilled accounts receivable $ 17.2   $ 17.2   $ 14.4
Deferred contract costs amortization period 4 years   4 years    
Deferred contract costs $ 34.2   $ 34.2   $ 25.8
Amortization expense $ 2.7 $ 1.4 $ 7.3 $ 3.7