Segment Information (Schedule Of Revenue By Segment, Product, And Region) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Net revenue	$ 2,957,013	$ 2,606,572	$ 2,340,196
U.S., Canada And Latin America [Member]
Net revenue	1,926,959	1,696,285	1,447,086
Global [Member]
Net revenue	2,957,013	2,606,572	2,340,197
Operating Segments [Member] | Devices [Member] | U.S., Canada And Latin America [Member]
Net revenue	792,766	743,066	689,603
Operating Segments [Member] | Devices [Member] | Combined Europe, Asia And Other Markets [Member]
Net revenue	715,056	618,525	613,978
Operating Segments [Member] | Devices [Member] | Global [Member]
Net revenue	1,507,822	1,361,591	1,303,581
Operating Segments [Member] | Masks And Other [Member] | U.S., Canada And Latin America [Member]
Net revenue	779,561	677,430	600,480
Operating Segments [Member] | Masks And Other [Member] | Combined Europe, Asia And Other Markets [Member]
Net revenue	314,998	291,762	279,133
Operating Segments [Member] | Masks And Other [Member] | Global [Member]
Net revenue	1,094,559	969,192	879,613
Operating Segments [Member] | Sleep And Respiratory Care [Member] | U.S., Canada And Latin America [Member]
Net revenue	1,572,327	1,420,496	1,290,083
Operating Segments [Member] | Sleep And Respiratory Care [Member] | Combined Europe, Asia And Other Markets [Member]
Net revenue	1,030,054	910,287	893,111
Operating Segments [Member] | Sleep And Respiratory Care [Member] | Global [Member]
Net revenue	2,602,381	2,330,783	2,183,194
Operating Segments [Member] | Software As A Service [Member] | U.S., Canada And Latin America [Member]
Net revenue	354,632	275,789	157,003
Operating Segments [Member] | Software As A Service [Member] | Global [Member]
Net revenue	$ 354,632	$ 275,789	$ 157,003