| Document and Entity Information | Nov. 01, 2019 |
| Cover page. | |
| Document Type | 8-K |
| Document Period End Date | Nov. 1, 2019 |
| Entity Registrant Name | HAEMONETICS CORPORATION |
| Entity Central Index Key | 0000313143 |
| Amendment Flag | false |
| Entity Incorporation, State or Country Code | MA |
| Entity File Number | 001-14041 |
| Entity Tax Identification Number | 04-2882273 |
| Entity Address, Address Line One | 400 Wood Road |
| Entity Address, City or Town | Braintree |
| Entity Address, State or Province | MA |
| Entity Address, Postal Zip Code | 02184 |
| City Area Code | 781 |
| Local Phone Number | 848-7100 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common stock, $.01 par value per share |
| Trading Symbol | HAE |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
