Summary Of Significant Accounting Policies (Summary Of Net Revenue Disaggregated By Product And Region) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Net revenue	$ 768,767	$ 769,455	$ 2,320,722	$ 2,186,669
Software As A Service [Member]
Disaggregation of Revenue [Line Items]
Net revenue	93,836	89,560	277,813	263,156
U.S., Canada And Latin America [Member]
Disaggregation of Revenue [Line Items]
Net revenue	496,717	483,109	1,510,607	1,434,964
U.S., Canada And Latin America [Member] | Devices [Member]
Disaggregation of Revenue [Line Items]
Net revenue	192,897	196,497	595,287	586,907
U.S., Canada And Latin America [Member] | Masks And Other [Member]
Disaggregation of Revenue [Line Items]
Net revenue	209,984	197,052	637,507	584,901
U.S., Canada And Latin America [Member] | Sleep And Respiratory Care [Member]
Disaggregation of Revenue [Line Items]
Net revenue	402,881	393,549	1,232,794	1,171,808
U.S., Canada And Latin America [Member] | Software As A Service [Member]
Disaggregation of Revenue [Line Items]
Net revenue	93,836	89,560	277,813	263,156
Combined Europe, Asia And Other Markets [Member] | Devices [Member]
Disaggregation of Revenue [Line Items]
Net revenue	172,838	195,038	536,856	509,274
Combined Europe, Asia And Other Markets [Member] | Masks And Other [Member]
Disaggregation of Revenue [Line Items]
Net revenue	99,212	91,308	273,259	242,431
Combined Europe, Asia And Other Markets [Member] | Sleep And Respiratory Care [Member]
Disaggregation of Revenue [Line Items]
Net revenue	272,050	286,346	810,115	751,705
Global [Member]
Disaggregation of Revenue [Line Items]
Net revenue	768,767	769,455	2,320,722	2,186,669
Global [Member] | Devices [Member]
Disaggregation of Revenue [Line Items]
Net revenue	365,735	391,535	1,132,143	1,096,181
Global [Member] | Masks And Other [Member]
Disaggregation of Revenue [Line Items]
Net revenue	309,196	288,360	910,766	827,332
Global [Member] | Sleep And Respiratory Care [Member]
Disaggregation of Revenue [Line Items]
Net revenue	674,931	679,895	2,042,909	1,923,513
Global [Member] | Software As A Service [Member]
Disaggregation of Revenue [Line Items]
Net revenue	$ 93,836	$ 89,560	$ 277,813	$ 263,156