Condensed Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Net revenue	$ 800,011	$ 736,157	$ 1,551,955	$ 1,417,213
Cost of sales (exclusive of amortization shown separately below)	326,364	296,975	627,668	572,976
Amortization of acquired intangible assets	11,164	12,052	23,143	25,488
Total cost of sales	337,528	309,027	650,811	598,464
Gross profit	462,483	427,130	901,144	818,749
Operating expenses:
Selling, general and administrative	169,470	171,422	328,459	338,862
Research and development	54,935	49,943	109,468	97,976
Amortization of acquired intangible assets	7,689	8,556	15,932	13,599
Restructuring expenses (note 11)	8,673		8,673
Litigation settlement expenses		(600)		(600)
Total operating expenses	240,767	229,321	462,532	449,837
Income from operations	221,716	197,809	438,612	368,912
Other income (loss), net:
Interest income	132	202	249	650
Interest expense	(5,924)	(10,220)	(12,766)	(21,212)
Loss attributable to equity method investments (note 5)	(2,640)	(6,924)	(4,928)	(13,786)
Other, net (note 13)	(2,692)	(2,115)	5,279	(5,225)
Total other income (loss), net	(11,124)	(19,057)	(12,166)	(39,573)
Income before income taxes	210,592	178,752	426,446	329,339
Income taxes	31,078	18,198	68,560	48,637
Net income	$ 179,514	$ 160,554	$ 357,886	$ 280,702
Basic earnings per share (note 9)	$ 1.24	$ 1.11	$ 2.47	$ 1.95
Diluted earnings per share (note 9)	1.23	1.10	2.45	1.93
Dividend declared per share	$ 0.39	$ 0.39	$ 0.78	$ 0.78
Basic shares outstanding (000's)	145,246	144,212	145,053	143,966
Diluted shares outstanding (000's)	146,421	145,575	146,350	145,479
Sleep And Respiratory Care [Member]
Net revenue	$ 708,178	$ 649,451	$ 1,367,979	$ 1,243,617
Cost of sales (exclusive of amortization shown separately below)	293,862	267,377	562,852	513,793
Operating expenses:
Amortization of acquired intangible assets	1,140	2,205	3,095	4,456
Software As A Service [Member]
Net revenue	91,833	86,706	183,976	173,596
Cost of sales (exclusive of amortization shown separately below)	32,502	29,598	64,816	59,183
Operating expenses:
Amortization of acquired intangible assets	$ 10,024	$ 9,847	$ 20,048	$ 21,032