Document and Entity Information - shares
6 Months Ended
Jun. 30, 2019
Jul. 25, 2019
Cover page.    
Entity Incorporation, State or Country Code DE  
Title of 12(b) Security Common Stock, $0.01 Par Value Per Share  
Document Transition Report false  
Document Quarterly Report true  
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jun. 30, 2019  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q2  
Trading Symbol PODD  
Entity Registrant Name INSULET CORPORATION  
Entity File Number 001-33462  
Entity Central Index Key 0001145197  
Current Fiscal Year End Date --12-31  
Entity Filer Category Large Accelerated Filer  
Entity Emerging Growth Company false  
Entity Small Business false  
Entity Current Reporting Status Yes  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding (in shares)   60,271,673
Security Exchange Name NASDAQ  
City Area Code 978  
Entity Interactive Data Current Yes  
Local Phone Number 600-7000  
Entity Tax Identification Number 04-3523891  
Entity Address, Address Line One 100 Nagog Park  
Entity Address, City or Town Acton  
Entity Address, State or Province MA  
Entity Address, Postal Zip Code 01720