Quarterly report pursuant to Section 13 or 15(d)

Debt And Derivatives - Schedule of Debt (Details)

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Debt And Derivatives - Schedule of Debt (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Sep. 30, 2022
Debt Instrument [Line Items]    
Term loans $ 1,318,171 $ 1,366,314
Less: Unamortized debt-issuance costs and discounts (8,137) (10,373)
Total debt 1,310,034 1,355,941
Less: Current portion of long-term debt (86,901) (63,458)
Long-term debt 1,223,133 1,292,483
Secured Debt | Term Loan A, due 2026    
Debt Instrument [Line Items]    
Term loans 930,000 971,250
Secured Debt | Term Loan B, due 2028    
Debt Instrument [Line Items]    
Term loans 345,850 395,000
Revolver | Revolving Credit Facility    
Debt Instrument [Line Items]    
Term loans 39,000 0
Subsidiary loan agreements    
Debt Instrument [Line Items]    
Term loans $ 3,321 $ 64