Revenue from Contracts with Customers - Summary of Revenue and Profit Attributable to Product Groups (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026	Mar. 31, 2025
Revenue from External Customer [Line Items]
Total revenue	$ 774,303	$ 636,366	$ 1,460,128	$ 1,201,494
Product lifecycle management (PLM)
Revenue from External Customer [Line Items]
Total revenue	492,128	396,149	923,670	749,608
Computer-aided design (CAD)
Revenue from External Customer [Line Items]
Total revenue	$ 282,175	$ 240,217	$ 536,458	$ 451,886