Segment and Geographic Data - Information by Geographic Area (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2022	Apr. 24, 2021	Apr. 25, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 6,499,405	$ 5,912,066	$ 5,490,011
Property and equipment, net	213,140	219,438
Assets	2,741,630	2,751,511
Dental net sales
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	2,516,132	2,327,021	2,101,922
Assets	851,746	863,718
Animal Health net sales
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	3,982,874	3,559,994	3,336,253
Assets	1,459,450	1,391,892
Corporate net sales
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	399	25,051	51,836
Assets	430,434	495,901
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	5,358,489	4,877,070	4,554,345
Property and equipment, net	200,839	209,361
United States | Dental net sales
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	2,259,579	2,107,521	1,900,539
United States | Animal Health net sales
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	3,098,511	2,744,498	2,601,970
United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	717,481	677,910	608,320
Property and equipment, net	6,045	2,471
United Kingdom | Animal Health net sales
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	717,481	677,910	608,320
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	423,435	357,086	327,346
Property and equipment, net	6,256	7,606
Canada | Dental net sales
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	256,553	219,500	201,383
Canada | Animal Health net sales
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 166,882	$ 137,586	$ 125,963