Consolidated Income Statements - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Net revenues
Revenue from contract with customer, excluding assessed tax	$ 780,370	$ 695,495	$ 2,277,982	$ 2,069,446
Cost of net revenues
Cost of net revenues	148,628	136,425	430,097	413,927
Gross profit	631,742	559,070	1,847,885	1,655,519
Operating expenses
Sales and marketing	220,428	205,550	644,524	615,277
Research and development	136,345	124,387	403,424	366,169
General and administrative	78,652	65,950	228,320	197,852
Restructuring charges	0	93	11,321	8,655
Total	435,425	395,980	1,287,589	1,187,953
Income from operations	196,317	163,090	560,296	467,566
Other income, net	16,706	8,529	32,971	24,385
Income before income taxes	213,023	171,619	593,267	491,951
Provision for income taxes	23,111	27,540	91,380	90,469
Net income	$ 189,912	$ 144,079	$ 501,887	$ 401,482
Net income per share — basic (dollars per share)	$ 3.29	$ 2.46	$ 8.65	$ 6.82
Weighted average shares — basic (shares)	57,772	58,584	57,989	58,832
Net income per share — diluted (dollars per share)	$ 3.25	$ 2.44	$ 8.54	$ 6.75
Weighted average shares — diluted (shares)	58,492	59,147	58,773	59,461
Product
Net revenues
Revenue from contract with customer, excluding assessed tax	$ 388,838	$ 308,489	$ 1,094,531	$ 914,510
Cost of net revenues
Cost of net revenues	88,782	80,813	252,905	248,834
Service
Net revenues
Revenue from contract with customer, excluding assessed tax	391,532	387,006	1,183,451	1,154,936
Cost of net revenues
Cost of net revenues	$ 59,846	$ 55,612	$ 177,192	$ 165,093