v3.19.2
Cover Page - shares
6 Months Ended
Jun. 30, 2019
Aug. 02, 2019
Cover page.    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2019  
Document Transition Report false  
Entity File Number 001-33520  
Entity Registrant Name comScore, Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 54-1955550  
Entity Address, Address Line One 11950 Democracy Drive, Suite 600  
Entity Address, City or Town Reston  
Entity Address, State or Province VA  
Entity Address, Postal Zip Code 20190  
City Area Code 703  
Local Phone Number 438-2000  
Title of 12(b) Security Common Stock, par value $0.001 per share  
Trading Symbol SCOR  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   64,148,258
Amendment Flag false  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q2  
Entity Central Index Key 0001158172  
Current Fiscal Year End Date --12-31