v3.26.1
Cover
May 13, 2026
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date May 13, 2026
Entity File Number 001-10607
Entity Registrant Name OLD REPUBLIC INTERNATIONAL CORPORATION
Entity Central Index Key 0000074260
Entity Tax Identification Number 36-2678171
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 307 North Michigan Avenue
Entity Address, City or Town Chicago
Entity Address, State or Province IL
Entity Address, Postal Zip Code 60601
City Area Code 312
Local Phone Number 346-8100
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock / $1 par value
Trading Symbol ORI
Security Exchange Name NYSE
Entity Emerging Growth Company false