XML 64 R52.htm IDEA: XBRL DOCUMENT v3.21.2
Revenue Recognition (Costs to Obtain a Contract) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2021
Dec. 31, 2020
Disaggregation of Revenue [Line Items]      
Deferred commission costs $ 18.4 $ 18.4 $ 17.5
Commissions expense recognized $ 1.5 $ 3.0  
Minimum      
Disaggregation of Revenue [Line Items]      
Amortization period 3 years 3 years  
Maximum      
Disaggregation of Revenue [Line Items]      
Amortization period 7 years 7 years