v3.23.2
Equity-based Compensation - Narrative (Details)
$ in Millions
 1 Months Ended 3 Months Ended 5 Months Ended 6 Months Ended 12 Months Ended 37 Months Ended
Dec. 31, 2020
Jun. 30, 2020
Dec. 31, 2019
USD ($)
shares
Jun. 30, 2023
USD ($)
shares
Sep. 30, 2022
Jun. 30, 2022
USD ($)
shares
May 31, 2020
Jun. 30, 2023
USD ($)
shares
Jun. 30, 2022
USD ($)
shares
Dec. 31, 2020
Dec. 31, 2019
USD ($)
Jun. 30, 2023
Jun. 03, 2020
instrument
shares
May 26, 2020
shares
Mar. 31, 2020
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Award vesting period               4 years              
Total equity-based compensation expense | $       $ 46.3   $ 47.0   $ 84.0 $ 89.5            
Maximum                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Unit options outstanding, weighted average remaining term               10 years              
Pre-IPO Awards                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Award vesting period             4 years                
Pre-IPO Awards | Tranche One                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Award vesting period             2 years                
Award vesting percentage             50.00%                
Post-IPO Awards                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Award vesting period                       4 years      
Post-IPO Awards | Tranche One                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Award vesting period                       1 year      
Award vesting percentage                       25.00%      
Post-IPO Awards | Quarterly Vesting                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Award vesting percentage                       6.25%      
Performance Based Restricted Stock Unit                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Award vesting period         1 year     1 year              
Performance Based Restricted Stock Unit | Annual Tranches                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Award vesting period               3 years              
Performance Based Restricted Stock Unit | Annual Tranches | Minimum                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Award vesting percentage               0.00%              
Performance Based Restricted Stock Unit | Annual Tranches | Maximum                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Award vesting percentage               200.00%              
HSKB Incentive Units                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Economic equivalent of unit (in shares)               1              
Amount allocated to be paid if holder of grant remains employed | $     $ 31.3               $ 31.3       $ 5.3
Employment period                   3 years 3 years        
Amount paid from allocated funds | $               $ 0.9              
Common Stock                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Stock issued during period shares employee stock purchase plans (in shares)       181,931                      
2020 Omnibus Incentive Plan | Common Stock                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Number of units authorized (in shares)                           18,650,000  
2020 Omnibus Incentive Plan | Common Stock                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Increase to authorized plan shares based on stock outstanding, percentage 5.00%                            
Employee Stock Purchase Plan                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Share based compensation arrangement maximum employee subscription rate                         15.00%    
Number of purchase periods permitted under the ESPP | instrument                         2    
Duration of each purchase period under the ESPP   6 months                          
Percentage of purchase price for common stock               90.00%              
Shares withheld for future ESPP purchase (in shares)                         7,500,000    
Shares withheld for future ESPP purchase | $       $ 1.4   $ 0.6   $ 4.4 $ 0.6            
Stock issued during period shares employee stock purchase plans (in shares)       181,931   0   181,931 0            
Total equity-based compensation expense | $       $ 0.8   $ 0.1   $ 2.0 $ 0.1            
Employee Stock Purchase Plan | Maximum                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Maximum shares purchased (in shares)               1,500              
Employee Stock Purchase Plan | Common Stock                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Increase to authorized plan shares based on stock outstanding, percentage                   1.00%          
ZoomInfo OpCo and HSKB 2019 Phantom Unit Plans | HSKB Phantom Units                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Period to settle awards     30 days                        
ZoomInfo OpCo and HSKB 2019 Phantom Unit Plans | Common Units | HSKB Phantom Units                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Economic equivalent of unit (in shares)     1