Property, Plant And Equipment (Components Of Property, Plant And Equipment) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jun. 30, 2017
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 896,521	$ 850,540
Accumulated depreciation and amortization	(498,540)	(456,299)
Property, plant and equipment, net	397,981	394,241
Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	245,339	230,632
Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	164,969	154,032
Furniture And Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	52,180	47,074
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	7,904	7,667
Clinical, Demonstration And Rental Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	97,594	86,024
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	39,240	35,932
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	55,317	55,311
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 233,978	$ 233,868