Consolidated Income Statements - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Net revenues
Revenue from contract with customer, excluding assessed tax	$ 583,252	$ 563,394	$ 1,736,006	$ 1,652,059
Cost of net revenues
Cost of net revenues	106,040	90,767	295,920	265,659
Gross profit	477,212	472,627	1,440,086	1,386,400
Operating expenses
Sales and marketing	211,808	195,852	622,799	531,065
Research and development	115,991	116,894	321,024	305,246
General and administrative	61,792	57,141	194,809	146,340
Restructuring charges	0	0	7,800	0
Total	389,591	369,887	1,146,432	982,651
Income from operations	87,621	102,740	293,654	403,749
Other income, net	141	4,722	5,220	19,251
Income before income taxes	87,762	107,462	298,874	423,000
Provision for income taxes	17,890	21,557	69,096	90,103
Net income	$ 69,872	$ 85,905	$ 229,778	$ 332,897
Net income per share — basic (dollars per share)	$ 1.15	$ 1.43	$ 3.78	$ 5.55
Weighted average shares — basic (shares)	60,978	59,981	60,831	59,963
Net income per share — diluted (dollars per share)	$ 1.14	$ 1.43	$ 3.76	$ 5.51
Weighted average shares — diluted (shares)	61,415	60,196	61,182	60,372
Product
Net revenues
Revenue from contract with customer, excluding assessed tax	$ 253,331	$ 248,929	$ 747,405	$ 720,665
Cost of net revenues
Cost of net revenues	57,437	44,336	152,641	130,293
Service
Net revenues
Revenue from contract with customer, excluding assessed tax	329,921	314,465	988,601	931,394
Cost of net revenues
Cost of net revenues	$ 48,603	$ 46,431	$ 143,279	$ 135,366