Debt - Schedule of Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Sep. 30, 2024
Debt Instrument [Line Items]
Long-term debt	$ 1,626,125	$ 515,038
Deferred debt issuance costs, net	(14,011)	(1,514)
Current maturities of long-term debt	(38,500)	(26,563)
Long-term debt, net of current maturities and debt issuance costs	1,573,614	486,961
Term Loan \| Line of Credit \| Term Loan A
Debt Instrument [Line Items]
Long-term debt	592,500	392,188
Term Loan \| Line of Credit \| Term Loan B
Debt Instrument [Line Items]
Long-term debt	843,625	0
Revolving Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Long-term debt	$ 190,000	$ 122,850

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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