v3.26.1
Document and Entity Information - shares
 6 Months Ended
Jun. 30, 2026
Jul. 31, 2026
Document and Entity Information    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
Document Transition Report false  
Securities Act File Number 001-37717  
Entity Registrant Name Senseonics Holdings, Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 47-1210911  
Entity Address, Address Line One 20451 Seneca Meadows Parkway  
Entity Address, City or Town Germantown  
Entity Address, State or Province MD  
Entity Address, Postal Zip Code 20876-7005  
City Area Code 301  
Local Phone Number 515-7260  
Title of 12(b) Security Common Stock, $0.001 par value  
Trading Symbol SENS  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   52,874,053
Entity Central Index Key 0001616543  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q2  
Amendment Flag false