Supplemental Balance Sheet Information (Components Of Property, Plant And Equipment) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Jun. 30, 2020
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	$ 1,085,629	$ 969,166
Accumulated depreciation and amortization	(622,139)	(551,831)
Property, plant and equipment, net	463,490	417,335
Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	349,022	285,287
Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	194,386	188,036
Furniture And Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	54,435	54,275
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	5,959	5,513
Clinical, Demonstration And Rental Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	110,620	95,860
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	77,392	60,490
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	54,458	51,803
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	$ 239,357	$ 227,902