Supplemental Balance Sheet Information (Components Of Property, Plant And Equipment) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 30, 2019
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	$ 969,166	$ 898,975
Accumulated depreciation and amortization	(551,831)	(511,515)
Property, plant and equipment, net	417,335	387,460
Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	285,287	262,010
Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	188,036	173,895
Furniture And Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	54,275	51,942
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	5,513	7,477
Clinical, Demonstration And Rental Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	95,860	94,007
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	60,490	34,210
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	51,803	52,406
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	$ 227,902	$ 223,028