XML 17 R1.htm IDEA: XBRL DOCUMENT v3.24.0.1
Cover Page - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2023
Feb. 16, 2024
Jun. 30, 2023
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2023    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-02658    
Entity Registrant Name STEWART INFORMATION SERVICES CORP    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 74-1677330    
Entity Address, Address Line One 1360 Post Oak Blvd.,    
Entity Address, Address Line Two Suite 100    
Entity Address, City or Town Houston,    
Entity Address, State or Province TX    
Entity Address, Postal Zip Code 77056    
City Area Code 713    
Local Phone Number 625-8100    
Title of 12(b) Security Common Stock, $1 par value per share    
Trading Symbol STC    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
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    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction false    
Entity Shell Company false    
Entity Public Float     $ 1.1
Entity Common Stock, Shares Outstanding   27,464,157  
Documents Incorporated by Reference
Portions of the definitive proxy statement (the Proxy Statement), in connection with the Registrant's 2024 Annual Meeting of Stockholders, are incorporated herein by reference in Part III of this document.
    
Entity Central Index Key 0000094344    
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY    
Amendment Flag false