Quarterly report [Sections 13 or 15(d)]

Debt And Derivatives - Schedule of Debt (Details)

v3.25.1
Debt And Derivatives - Schedule of Debt (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Sep. 30, 2024
Debt Instrument [Line Items]    
Debt principal $ 1,506,875  
Total debt principal 1,506,875 $ 1,145,819
Less: Unamortized debt-issuance costs and discounts (14,074) (13,726)
Total debt 1,492,801 1,132,093
Less: Current portion of long-term debt (47,055) (40,139)
Long-term debt 1,445,746 1,091,954
Secured Debt | Term Loan A (TLA)    
Debt Instrument [Line Items]    
Debt principal 875,625 641,875
Secured Debt | Term Loan B (TLB)    
Debt Instrument [Line Items]    
Debt principal 496,250 498,750
Revolver | Revolving Credit Facility    
Debt Instrument [Line Items]    
Debt principal 135,000 0
Subsidiary loan agreements    
Debt Instrument [Line Items]    
Subsidiary loan agreements $ 0 $ 5,194