XML 57 R43.htm IDEA: XBRL DOCUMENT v3.20.4
Revenue and Deferred Revenue - Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Revenue From Contract With Customer [Abstract]      
Deferred revenue, revenue recognized $ 137.6 $ 101.1 $ 83.3