Property, Plant And Equipment (Components Of Property, Plant And Equipment) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Jun. 30, 2017
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 887,876	$ 850,540
Accumulated depreciation and amortization	(486,339)	(456,299)
Property, plant and equipment, net	401,537	394,241
Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	243,738	230,632
Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	161,199	154,032
Furniture And Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	51,429	47,074
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	7,963	7,667
Clinical, Demonstration And Rental Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	93,386	86,024
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	37,984	35,932
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	55,859	55,311
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 236,318	$ 233,868