v3.20.2
Basis of Presentation and Summary of Significant Accounting Policies - Accrued Expenses and Other Current Liabilities (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Jun. 30, 2020
Dec. 31, 2018
Disaggregation of Revenue [Line Items]      
Total accrued expenses and other current liabilities $ 62.2 $ 47.0  
DiscoverOrg Holdings      
Disaggregation of Revenue [Line Items]      
Accrued salaries, wages, and benefits 42.6   $ 6.0
Other 19.6   3.5
Total accrued expenses and other current liabilities 62.2   $ 9.5
Deferred consideration $ 24.9