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Note 13 - Income Taxes - Summary of Company's Net Operating Loss Carryforwards Expires (Details) $ in Millions	Dec. 31, 2023 USD ($)
Operating loss carryforwards	$ 69.0
Period One [Member]
Operating loss carryforwards	20.5
Period Two [Member]
Operating loss carryforwards	11.5
Period Three [Member]
Operating loss carryforwards	$ 37.0

X

- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-3

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

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Balance Type:
Period Type:

X

- Details

Name:	us-gaap_TaxPeriodAxis=vrsk_PeriodTwoMember
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Balance Type:
Period Type:

X

- Details

Name:	us-gaap_TaxPeriodAxis=vrsk_PeriodThreeMember
Namespace Prefix:
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