DOCUMENT AND ENTITY INFORMATION - shares	9 Months Ended
	Dec. 26, 2020	Jan. 29, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Dec. 26, 2020
Document Transition Report	false
Entity File Number	001-14041
Entity Registrant Name	HAEMONETICS CORP
Entity Central Index Key	0000313143
Current Fiscal Year End Date	--04-03
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Incorporation, State or Country Code	MA
Entity Tax Identification Number	04-2882273
Entity Address, Address Line One	125 Summer Street
Entity Address, City or Town	Boston,
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	02110
City Area Code	781
Local Phone Number	848-7100
Title of 12(b) Security	Common stock, $.01 par value per share
Trading Symbol	HAE
Security Exchange Name	NYSE
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		50,821,698