XML 10 R1.htm IDEA: XBRL DOCUMENT v3.25.1
Cover Page - USD ($)
 12 Months Ended
Dec. 31, 2024
Feb. 28, 2025
Jun. 30, 2024
Cover      
Document Type 10-K/A    
Document Annual Report true    
Document Period End Date Dec. 31, 2024    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-39331    
Entity Registrant Name System1, Inc.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 92-3978051    
Entity Address, Address Line One 4235 Redwood Avenue    
Entity Address, City or Town Los Angeles    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 90066    
City Area Code 310    
Local Phone Number 924-6037    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company true    
Entity Ex Transition Period false    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 39,900,000
Entity Central Index Key 0001805833    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Amendment Flag false    
Class A Common Stock      
Cover      
Title of 12(b) Security Class A common stock, par value $0.0001 per share    
Trading Symbol SST    
Security Exchange Name NYSE    
Entity Common Stock, Shares Outstanding   74,510,018  
Redeemable warrants, each whole warrant exercisable for one Class A common stock at an exercise price of $11.50 per share      
Cover      
Title of 12(b) Security Redeemable warrants, each whole warrant exercisable for one Class A common stock at an exercise price of $11.50 per share    
Trading Symbol SST.WS    
Security Exchange Name NYSE    
Common Class C      
Cover      
Entity Common Stock, Shares Outstanding   18,703,676