v3.20.2

Redeemable Series A Preferred Units - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 08, 2020 | Feb. 01, 2019 | Jun. 30, 2020 | Jun. 30, 2020 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019 | Dec. 31, 2018
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Series A Preferred Unit redemption accretion |  |  |  | $ 74.0 |  |  |  |
Stock issuance costs |  |  |  |  | $ 7.2 | $ 0.0 |  |
Carrying amount of Units |  |  | $ 0.0 | 0.0 | $ 0.0 |  | $ 200.2 |
Additional Paid-in Capital |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Series A Preferred Unit redemption accretion |  |  | $ 74.0 | $ 74.0 |  |  |  |
DiscoverOrg Holdings |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Liquidation preference |  |  |  |  |  |  | 282.5 |
Carrying amount of Units |  |  |  |  |  |  | 200.2 | $ 0.0
Redeemable Series A Preferred Units |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Outstanding preferred units redeemed and cancelled | $ 274.2 |  |  |  |  |  |  |
Unpaid dividends | 45.4 |  |  |  |  |  |  |
Excess amount due upon early redemption | 28.6 |  |  |  |  |  |  |
Carrying amount of Units | 200.2 |  |  |  |  |  |  |
Excess amount paid attributable to common stockholders | 11.0 |  |  |  |  |  |  |
Redeemable Series A Preferred Units | Noncontrolling Interests |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Carrying amount of Units | $ 17.6 |  |  |  |  |  |  |
Redeemable Series A Preferred Units | DiscoverOrg Holdings |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Series A Preferred Unit redemption accretion |  | $ 51.8 |  |  |  |  |  |
Proceeds from sale of Series A Preferred Units |  | 200.2 |  |  |  |  |  |
Stock issuance costs |  | $ 0.6 |  |  |  |  |  |
Outstanding preferred units redeemed and cancelled |  |  |  |  |  |  | $ 51.8 |
Initial liquidiation preference (in dollars per share) |  |  | $ 4 | $ 4 | $ 4 |  |  |
Redeemable Series A Preferred Units | DiscoverOrg Holdings | Minimum |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Priority return rate |  |  | 15.00% | 15.00% | 15.00% |  |  |
Redeemable Series A Preferred Units | DiscoverOrg Holdings | Maximum |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Priority return rate |  |  | 17.00% | 17.00% | 17.00% |  |  |

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