Property, Plant And Equipment (Components Of Property, Plant And Equipment) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jun. 30, 2018
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 888,344	$ 860,864
Accumulated depreciation and amortization	(505,848)	(474,314)
Property, plant and equipment, net	382,496	386,550
Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	256,797	239,671
Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	170,620	155,069
Furniture And Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	51,510	51,045
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	7,390	7,399
Clinical, Demonstration And Rental Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	91,133	92,229
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	33,677	32,169
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	52,735	54,089
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 224,482	$ 229,193