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Component: (Network and Table)
Network
2402406 - Disclosure - Summary of Significant Accounting Policies (Schedule of Useful Lives of Finite Lived Intangible Assets) (Detail)
(http://www.comscore.com/role/SummaryOfSignificantAccountingPoliciesScheduleOfUsefulLivesOfFiniteLivedIntangibleAssetsDetail)
TableSchedule of Finite-Lived Intangible Assets [Table]
Slicers (applies to each fact value in each table cell)
Finite-Lived Intangible Assets [Line Items]Finite-Lived Intangible Assets by Major Class [Axis]
Acquired Methodologies Technology [Member]Customer Relationships [Member]Panel [Member]Developed Technology Rights [Member]Trade Names [Member]
Range [Axis]Range [Axis]Range [Axis]Range [Axis]Range [Axis]
Minimum [Member]Maximum [Member]Minimum [Member]Maximum [Member]Range [Domain]Minimum [Member]Maximum [Member]Minimum [Member]Maximum [Member]
Finite-lived intangible assets useful life (in years)
P3Y 
P10Y 
P3Y 
P12Y 
P7Y 
P7Y 
P13Y 
P2Y 
P10Y