Acquisitions and Disposition of Businesses - Schedule of Purchase Price Allocation (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Oct. 04, 2023	Sep. 30, 2023	Jan. 03, 2023	Sep. 30, 2022	Apr. 29, 2022
Business Acquisition [Line Items]
Goodwill	$ 3,461,891		$ 3,358,511		$ 2,353,654
Pure Systems
Business Acquisition [Line Items]
Goodwill		$ 77,118
Net tax liability		(8,860)
Acquired debt		(2,475)
Other net liabilities		(526)
Total		93,457
Servicemax acquisition
Business Acquisition [Line Items]
Goodwill				$ 974,850
Accounts receivable				58,722
Other net assets				5,540
Net tax liability				(121,656)
Deferred revenue				(97,829)
Total				1,448,227
Intland Software
Business Acquisition [Line Items]
Goodwill						$ 240,971
Accounts receivable						6,506
Net tax liability						(20,811)
Deferred revenue						(6,925)
Other net liabilities						(818)
Total						278,123
Customer relationships | Pure Systems
Business Acquisition [Line Items]
Intangible assets		17,400
Customer relationships | Servicemax acquisition
Business Acquisition [Line Items]
Intangible assets				512,700
Customer relationships | Intland Software
Business Acquisition [Line Items]
Intangible assets						38,800
Purchased Software | Pure Systems
Business Acquisition [Line Items]
Intangible assets		10,000
Purchased Software | Servicemax acquisition
Business Acquisition [Line Items]
Intangible assets				106,900
Purchased Software | Intland Software
Business Acquisition [Line Items]
Intangible assets						19,100
Trademarks | Pure Systems
Business Acquisition [Line Items]
Intangible assets		$ 800
Trademarks | Servicemax acquisition
Business Acquisition [Line Items]
Intangible assets				$ 9,000
Trademarks | Intland Software
Business Acquisition [Line Items]
Intangible assets						$ 1,300