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Cover - shares
 6 Months Ended
Jun. 30, 2021
Aug. 13, 2021
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Jun. 30, 2021  
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2021  
Current Fiscal Year End Date --12-31  
Entity File Number 1-12471  
Entity Registrant Name THEMAVEN, INC.  
Entity Central Index Key 0000894871  
Entity Tax Identification Number 68-0232575  
Entity Incorporation, State or Country Code DE  
Entity Address, Address Line One 225 Liberty Street  
Entity Address, Address Line Two 27th Floor  
Entity Address, City or Town New York  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 10281  
City Area Code 212  
Local Phone Number 321-5002  
Entity Current Reporting Status No  
Entity Interactive Data Current No  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   263,441,879