| Cover Page | Sep. 07, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Sep. 7, 2021 |
| Entity Registrant Name | ZoomInfo Technologies Inc. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-39310 |
| Entity Tax Identification Number | 84-3721253 |
| Entity Address, Address Line One | 805 Broadway Street |
| Entity Address, Address Line Two | Suite 900 |
| Entity Address, City or Town | Vancouver |
| Entity Address, State or Province | WA |
| Entity Address, Postal Zip Code | 98660 |
| City Area Code | 800 |
| Local Phone Number | 914-1220 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Class A common stock, par value $0.01 per share |
| Trading Symbol | ZI |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Entity Central Index Key | 0001794515 |
| Amendment Flag | false |
