v3.26.1
Cover
 12 Months Ended
Dec. 31, 2025
shares
Document Information [Line Items]  
Document Type 20-F
Document Registration Statement false
Document Annual Report true
Document Transition Report false
Document Financial Statement Error Correction [Flag] false
Document Shell Company Report false
Entity Interactive Data Current Yes
Document Accounting Standard International Financial Reporting Standards
ICFR Auditor Attestation Flag true
Amendment Flag false
Document Period End Date Dec. 31, 2025
Document Fiscal Year Focus 2025
Document Fiscal Period Focus FY
Entity Information [Line Items]  
Entity Registrant Name FORMULA SYSTEMS (1985) LTD.
Entity Central Index Key 0001045986
Entity File Number 000-29442
Entity Incorporation, State or Country Code L3
Current Fiscal Year End Date --12-31
Entity Well-known Seasoned Issuer Yes
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Shell Company false
Entity Filer Category Large Accelerated Filer
Entity Emerging Growth Company false
Entity Contact Personnel [Line Items]  
Entity Address, Address Line One Terminal Center, 1 Yahadut Canada Street
Entity Address, City or Town Or Yehuda
Entity Address, Country IL
Entity Address, Postal Zip Code 6037501
Entity Listings [Line Items]  
Title of 12(b) Security American Depositary Shares, each representing one Ordinary Share, NIS 1 par value
Trading Symbol FORTY
Security Exchange Name NASDAQ
Entity Common Stock, Shares Outstanding 15,332,667
Business Contact [Member]  
Entity Contact Personnel [Line Items]  
Contact Personnel Name Asaf Berenstin
Contact Personnel Fax Number +972 3 5389300
Entity Address, Address Line One Terminal Center, 1 Yahadut Canada Street
Entity Address, City or Town Or Yehuda
Entity Address, Country IL
Entity Address, Postal Zip Code 6037501
Entity Phone Fax Numbers [Line Items]  
City Area Code +972
Local Phone Number 3 5389305