RESTRUCTURING (Schedule of Restructuring Reserve by Type of Cost) (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 02, 2022	Apr. 03, 2021	Mar. 28, 2020
Restructuring Reserve [Roll Forward]
Beginning Balance	$ 1,012	$ 2,648	$ 7,479
Cost Incurred	4,230	1,444	3,591
Payments	(2,437)	(3,080)	(8,275)
Non-cash adjustments			(147)
Ending Balance	2,805	1,012	2,648
Turnaround costs	24,594	14,217	16,287
Total restructuring and turnaround	28,824	15,661	19,878
Plasma products and services
Restructuring Reserve [Roll Forward]
Cost Incurred	2,492	454	544
Turnaround costs	7,906	1,870	820
Blood Center products and services
Restructuring Reserve [Roll Forward]
Cost Incurred	(18)	201	(5)
Turnaround costs	556	1,599	320
Hospital products and services
Restructuring Reserve [Roll Forward]
Cost Incurred	(93)	322	845
Turnaround costs	379	14	0
All Other
Restructuring Reserve [Roll Forward]
Cost Incurred	1,849	467	2,207
Turnaround costs	15,753	10,734	15,147
2020 Program
Restructuring Reserve [Roll Forward]
Beginning Balance	575	1,136	0
Cost Incurred	4,202	1,501	2,234
Payments	(2,317)	(2,062)	(1,098)
Non-cash adjustments			0
Ending Balance	2,460	575	1,136
Prior Programs
Restructuring Reserve [Roll Forward]
Beginning Balance	437	1,512	7,479
Cost Incurred	28	(57)	1,357
Payments	(120)	(1,018)	(7,177)
Non-cash adjustments			(147)
Ending Balance	345	437	1,512
Cost of Goods Sold
Restructuring Reserve [Roll Forward]
Cost Incurred	2,236	390	1,082
Turnaround costs	17,832	9,318	2,227
Research and development
Restructuring Reserve [Roll Forward]
Cost Incurred	105	142	532
Turnaround costs	714	1,026	354
Selling, general and administrative expenses
Restructuring Reserve [Roll Forward]
Cost Incurred	1,889	912	1,977
Turnaround costs	$ 6,048	$ 3,873	$ 13,706