Cover page - shares	9 Months Ended
	Sep. 30, 2020	Nov. 11, 2020
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2020
Document Transition Report	false
Entity File Number	001-39310
Entity Registrant Name	ZoomInfo Technologies Inc.
Entity Incorporation, State or Country Code	DE
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
Title of 12(b) Security	Class A common stock, par value $0.01 per share
Trading Symbol	ZI
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Entity Central Index Key	0001794515
Current Fiscal Year End Date	--12-31
Class A common stock
Entity Common Stock, Shares Outstanding		69,240,501
Class B common stock
Entity Common Stock, Shares Outstanding		228,488,162
Class C common stock
Entity Common Stock, Shares Outstanding		91,582,353