SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)	12 Months Ended
	Mar. 28, 2020	Mar. 30, 2019	Mar. 31, 2018	Mar. 31, 2019
Summary of Significant Accounting Pronouncements [Line Items]
Optional exemption term	1 year
Cash and cash equivalents maximum maturity period	3 months
Goodwill impairment	$ 0	$ 0
Intangible asset impairment	0	0
Impairment charges related to the discontinuance of certain capitalized software projects	0	0
Other Liabilities
VAT liabilities	3,279,000	3,995,000
Forward contracts and interest rate swaps	8,870,000	5,348,000
Deferred revenue	28,843,000	27,279,000
Accrued taxes	13,292,000	8,451,000
Operating Lease, Liability, Current, Other	7,306,000
All other	36,051,000	46,459,000
Total	97,641,000	91,532,000
Other Long-Term Liabilities
Unfunded pension liability	13,083,000	13,766,000
Interest Rate Swaps, Noncurrent, Other	9,475,000	0
Unrecognized tax benefit	3,437,000	2,895,000
Transition tax liability	5,374,000	6,305,000
Operating Lease, Liability, Noncurrent, Other	52,014,000	0
All other	5,721,000	5,814,000
Total	89,104,000	28,780,000
Advertising expense	4,300,000	4,500,000	$ 3,100,000
Foreign currency losses	2,900,000	$ 2,300,000	$ 200,000
Right-of-use assets	52,236,000
Lease liabilities	$ 59,320,000
Minimum
Summary of Significant Accounting Pronouncements [Line Items]
Software capitalization term	5 years
Maximum
Summary of Significant Accounting Pronouncements [Line Items]
Software capitalization term	10 years
Building | Minimum
Summary of Significant Accounting Pronouncements [Line Items]
Property, plant and equipment, useful life	30 years
Building | Maximum
Summary of Significant Accounting Pronouncements [Line Items]
Property, plant and equipment, useful life	40 years
Building improvements | Minimum
Summary of Significant Accounting Pronouncements [Line Items]
Property, plant and equipment, useful life	5 years
Building improvements | Maximum
Summary of Significant Accounting Pronouncements [Line Items]
Property, plant and equipment, useful life	20 years
Plant equipment and machinery | Minimum
Summary of Significant Accounting Pronouncements [Line Items]
Property, plant and equipment, useful life	3 years
Plant equipment and machinery | Maximum
Summary of Significant Accounting Pronouncements [Line Items]
Property, plant and equipment, useful life	15 years
Office equipment and information technology | Minimum
Summary of Significant Accounting Pronouncements [Line Items]
Property, plant and equipment, useful life	3 years
Office equipment and information technology | Maximum
Summary of Significant Accounting Pronouncements [Line Items]
Property, plant and equipment, useful life	10 years
Haemonetics equipment | Minimum
Summary of Significant Accounting Pronouncements [Line Items]
Property, plant and equipment, useful life	3 years
Haemonetics equipment | Maximum
Summary of Significant Accounting Pronouncements [Line Items]
Property, plant and equipment, useful life	7 years
Net Revenues | Customer Concentration Risk | Ten Largest Customers
Other Long-Term Liabilities
Concentration risk	54.00%	52.00%	45.00%
Net Revenues | Customer Concentration Risk | Two Plasma Customers, CSL Plasma Inc. (CSL) and Grifols S.A. (Grifols)
Other Long-Term Liabilities
Concentration risk	27.00%	27.00%	26.00%
ASU 2016-02
Other Long-Term Liabilities
Right-of-use assets				$ 22,900,000
Lease liabilities				$ 22,700,000