Revenue from Contracts with Customers - Additional Information (Details) - USD ($)	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Revenue from External Customer [Line Items]
Contract with customer, asset, expected to be transferred to receivables within the next 12 months and therefore	$ 16,100,000
Contract with customer other current asset		$ 16,900,000
Contract with customer, asset, reclassified to receivable	14,700,000
Contract with customer, asset, increase in contract assets related to revenue recognized	10,000,000
Deferred revenue, revenue recognized	509,100,000
Deferred revenue, additions	$ 572,500,000
Capitalized contract cost, amortization period	5 years
Amortization expense related to costs to obtain a contract with a customer	$ 53,400,000	50,900,000
Impairments of the contract cost asset	0	0
Impairment of contract assets	0
Deferred revenue	681,550,000	520,333,000
Revenue, remaining performance obligation, amount	2,051,000,000
Unrecorded
Revenue from External Customer [Line Items]
Revenue, remaining performance obligation, amount	1,369,400,000
Other Current Assets
Revenue from External Customer [Line Items]
Capitalized contract cost, net	41,800,000	40,700,000
Other Assets
Revenue from External Customer [Line Items]
Capitalized contract cost, net	78,700,000	$ 77,000,000
Servicemax Inc. acquisition
Revenue from External Customer [Line Items]
Addition to the acquisition of deferred revenue	$ 97,800,000