The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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Amount of cash outflow, not made soon after acquisition date of business combination, to settle contingent consideration liability up to amount recognized at acquisition date, including, but not limited to, measurement period adjustment and less amount paid soon after acquisition date.

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Cash received on stock transaction after deduction of issuance costs.

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No definition available.

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The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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Number Of Offices

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Number of Subsidiaries, C Corporations

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Number of Subsidiaries, Foreign Entities

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Number of Subsidiaries, Limited Liability Companies

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Number of Subsidiaries, Partnerships

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Number Of Tax Receivable Agreements

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Organization, Consolidation and Presentation of Financial Statements

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Organization and Background (Details) $ / shares in Units, $ in Millions		3 Months Ended	6 Months Ended		12 Months Ended
	Jun. 08, 2020 USD ($) agreement $ / shares shares	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) office segment	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($) agreement office	Dec. 31, 2018 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Repurchase of shares, value		$ 11.9
Merger consideration payable			$ 24.0	$ 0.3
Conversion ratio	0
Number of tax receivable agreements \| agreement	2
Number of subsidiaries, corporations \| segment			2
ZoomInfo HoldCo
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Ownership of consolidated entity (as a percent)			98.00%
Blocker Mergers
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Merger consideration payable	$ 5.5
IPO \| Class A common stock
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Number of shares sold \| shares	51,175,000
Public offering price (in dollars per share) \| $ / shares	$ 21.00
Net proceeds	$ 1,019.6
U.S.
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Number of offices \| office			6
Israel
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Number of offices \| office			1
DiscoverOrg Holdings
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Repurchase of shares, value					$ 5.6
Merger consideration payable					$ 0.3	$ 0.0
Number of subsidiaries, partnerships \| agreement					2
Number of subsidiaries, limited liability companies \| agreement					11
Number of subsidiaries, corporations \| agreement					2
Number of subsidiaries, foreign entities \| agreement					1
DiscoverOrg Holdings \| U.S.
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Number of offices \| office					7
DiscoverOrg Holdings \| Israel
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Number of offices \| office					1
ZoomInfo HoldCo
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Number of shares repurchased \| shares	48,528,783
Repurchase of shares, value	$ 966.9
ZoomInfo HoldCo \| OpCo
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Ownership of non-consolidated entity (as a percent)			39.00%
OpCo
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Number of shares repurchased \| shares	2,370,948
Repurchase of shares, value	$ 47.2