v3.25.2
Cover Page Document - shares
6 Months Ended
Jun. 30, 2025
Jul. 31, 2025
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2025  
Document Transition Report false  
Entity File Number 001-36537  
Entity Registrant Name TRUPANION, INC.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 83-0480694  
Entity Address, Address Line One 6100 4th Avenue S, Suite 200  
Entity Address, City or Town Seattle,  
Entity Address, State or Province WA  
Entity Address, Postal Zip Code 98108  
City Area Code (855)  
Local Phone Number 727 - 9079  
Title of 12(b) Security Common stock, $0.00001 par value per share  
Trading Symbol TRUP  
Security Exchange Name NASDAQ  
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  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   42,994,675
Entity Central Index Key 0001371285  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q2  
Amendment Flag false