Document and Entity Information	9 Months Ended
	Sep. 30, 2012	Oct. 15, 2012
Entity [Domain]
Registrant name	Travelers Companies, Inc.
Central index key	0000086312
Document type	10-Q
Document period end date	Sep. 30, 2012
Amendment flag	false
Current fiscal year end date	--12-31
Well-known seasoned issuer	Yes
Voluntary filers	No
Current reporting status	Yes
Filer category	Large Accelerated Filer
Common stock shares outstanding		381,449,123
Document fiscal year focus	2012
Document fiscal period focus	Q3