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Cover - shares
 9 Months Ended
Sep. 30, 2023
Nov. 02, 2023
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Entity Interactive Data Current Yes  
Amendment Flag false  
Document Period End Date Sep. 30, 2023  
Document Fiscal Year Focus 2023  
Document Fiscal Period Focus Q3  
Entity Information [Line Items]    
Entity Registrant Name WisdomTree, Inc.  
Entity Central Index Key 0000880631  
Entity File Number 001-10932  
Entity Tax Identification Number 13-3487784  
Entity Incorporation, State or Country Code DE  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Shell Company false  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Contact Personnel [Line Items]    
Entity Address, Address Line One 250 West 34th Street  
Entity Address, Address Line Two 3rd Floor  
Entity Address, City or Town New York  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 10119  
Entity Phone Fax Numbers [Line Items]    
City Area Code 212  
Local Phone Number 801-2080  
Entity Listings [Line Items]    
Entity Common Stock, Shares Outstanding   150,335,358
Common Stock    
Entity Listings [Line Items]    
Title of 12(b) Security Common Stock, $0.01 par value  
Trading Symbol WT  
Security Exchange Name NYSE  
Preferred Stock    
Entity Listings [Line Items]    
Title of 12(b) Security Preferred Stock Purchase Rights  
No Trading Symbol Flag true  
Security Exchange Name NYSE