XML 13 R1.htm IDEA: XBRL DOCUMENT v3.20.2
Document and Entity Information - shares
6 Months Ended
Jun. 30, 2020
Jul. 20, 2020
Document and Entity Information    
Document type 10-Q  
Document quarterly report true  
Document period end date Jun. 30, 2020  
Document transition report false  
Entity file number 001-10898  
Registrant name Travelers Companies, Inc.  
Entity incorporation, state MN  
Entity tax identification number 41-0518860  
Entity address, address line one 485 Lexington Avenue  
Entity address, city New York  
Entity address, state NY  
Entity address, postal zip code 10017  
City area code 917  
Local phone number 778-6000  
Title of 12(b) security Common stock, without par value  
Trading symbol TRV  
Security exchange name NYSE  
Entity current reporting status Yes  
Entity interactive data current Yes  
Filer category Large Accelerated Filer  
Entity small business false  
Entity emerging growth company false  
Entity shell company false  
Common stock shares outstanding   253,191,174
Central index key 0000086312  
Amendment flag false  
Current fiscal year end date --12-31  
Document fiscal year focus 2020  
Document fiscal period focus Q2