v3.20.2

Business Combinations - Components of Finite-Lived Intangible Assets Acquired (Details) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Feb. 01, 2019 | Dec. 31, 2019
Pre-Acquisition ZI |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Total intangible assets | $ 322.0 |
Pre-Acquisition ZI | DiscoverOrg Holdings |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Total intangible assets | 322.0 |
Pre-Acquisition ZI | Developed technology |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Fair Value | $ 116.0 |
Weighted Average Useful Life | 5 years 9 months 18 days |
Pre-Acquisition ZI | Developed technology | DiscoverOrg Holdings |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Fair Value | $ 116.0 |
Weighted Average Useful Life | 5 years 9 months 18 days |
Pre-Acquisition ZI | Customer relationships |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Fair Value | $ 173.0 |
Weighted Average Useful Life | 15 years |
Pre-Acquisition ZI | Customer relationships | DiscoverOrg Holdings |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Fair Value | $ 173.0 |
Weighted Average Useful Life | 15 years |
NeverBounce | Developed technology | DiscoverOrg Holdings |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Fair Value |  | $ 2.3
Weighted Average Useful Life |  | 7 years
NeverBounce | Customer relationships | DiscoverOrg Holdings |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Fair Value |  | $ 1.1
Weighted Average Useful Life |  | 5 years
NeverBounce | Brand portfolio | DiscoverOrg Holdings |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Fair Value |  | $ 0.2
Weighted Average Useful Life |  | 7 years

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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