Acquisitions - Additional Information (Details) $ in Thousands				3 Months Ended		6 Months Ended
	Oct. 04, 2023 USD ($) Employees	Oct. 02, 2023 USD ($)	Jan. 03, 2023 USD ($) Employees	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)
Business Acquisition [Line Items]
Business combination, acquisition related costs				$ 300	$ 11,900	$ 2,800	$ 17,700
Goodwill				$ 3,446,373		3,446,373		$ 3,358,511
Servicemax acquisition
Business Acquisition [Line Items]
Preliminary purchase price			$ 828,200
Payments to acquire business, net of cash			$ 1,448,200
Deferred acquisition payments		$ 650,000				$ 650,000
Payments to acquire business		620,000
Imputed interest payable		$ 30,000
Number Of Employees | Employees			500
Goodwill			$ 974,900
Intangible assets			628,600
Net tax liabilities			121,700
Other net liabilities			$ 33,600
Pure System
Business Acquisition [Line Items]
Payments to acquire business, net of cash	$ 93,500
Number Of Employees | Employees	50
Goodwill	$ 77,118
Other net liabilities	$ 526
Pure System | Customer relationships
Business Acquisition [Line Items]
Acquired finite-lived intangible asset, weighted average useful life	18 years
Intangible assets	$ 17,400
Pure System | Purchased Software
Business Acquisition [Line Items]
Acquired finite-lived intangible asset, weighted average useful life	10 years
Intangible assets	$ 10,000
Pure System | Trademarks
Business Acquisition [Line Items]
Acquired finite-lived intangible asset, weighted average useful life	10 years
Intangible assets	$ 800