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Note 16 - Commitments and Contingencies (Details Textual) - USD ($) | Jun. 16, 2023 | Jan. 30, 2023 | Jun. 27, 2022
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Miller v. Pentagon Federal Credit Union, Verisk Analytics, Inc. and Lead Intelligence, Inc. [Member] |  |  |
Loss Contingency, Aggregate Claims of Proposed Class | $ 5,000,000.0 |  |
Ahringer et al. v. LoanDepot, Inc. and Verisk Analytics [Member] |  |  |
Loss Contingency, Aggregate Claims of Proposed Class |  | $ 5.0 |
Williams v. DDR Merida, LLC and Lead Intelligence, Inc. [Member] |  |  |
Loss Contingency, Damages Per Violation |  |  | $ 5,000

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- Definition Aggregate claims of proposed class for loss contingency. + References No definition available. + Details
Name: | vrsk_LossContingencyAggregateClaimsOfProposedClass
Namespace Prefix: | vrsk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The amount of damages per violation accrued under loss contingency. + References No definition available. + Details
Name: | vrsk_LossContingencyDamagesPerViolation
Namespace Prefix: | vrsk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | srt_LitigationCaseAxis=vrsk_MillerVPentagonFederalCreditUnionVeriskAnalyticsIncAndLeadIntelligenceIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=vrsk_AhringerEtAlVLoandepotIncAndVeriskAnalyticsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=vrsk_WilliamsVDdrMeridaLlcAndLeadIntelligenceIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |