| Document and Entity Information | Apr. 19, 2021 |
| Cover [Abstract] | |
| Entity Registrant Name | INSULET CORP |
| Amendment Flag | false |
| Entity Central Index Key | 0001145197 |
| Document Type | 8-K |
| Document Period End Date | Apr. 19, 2021 |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-33462 |
| 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 |
| City Area Code | (978) |
| Local Phone Number | 600-7000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Security 12b Title | Common Stock, $0.001 Par Value Per Share |
| Trading Symbol | PODD |
| Security Exchange Name | NASDAQ |
