Property, Plant And Equipment (Components Of Property, Plant And Equipment) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Jun. 30, 2018
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 870,488	$ 860,864
Accumulated depreciation and amortization	(488,983)	(474,314)
Property, plant and equipment, net	381,505	386,550
Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	247,576	239,671
Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	164,433	155,069
Furniture And Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	51,246	51,045
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	7,360	7,399
Clinical, Demonstration And Rental Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	90,647	92,229
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	33,228	32,169
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	52,508	54,089
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 223,490	$ 229,193