Annual report pursuant to Section 13 and 15(d)

Debt And Derivatives - Narrative (Details)

v3.23.3
Debt And Derivatives - Narrative (Details) - USD ($)
12 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Debt Instrument [Line Items]    
Annual effective interest rate 5.97%  
Minimum    
Debt Instrument [Line Items]    
Commitment fee percentage 0.125%  
Maximum    
Debt Instrument [Line Items]    
Commitment fee percentage 0.30%  
Other Assets    
Debt Instrument [Line Items]    
Fair value of derivative instrument $ 31,000,000 $ 31,400,000
Term Loan A and Revolving Credit Facility | Minimum    
Debt Instrument [Line Items]    
Basis spread on variable rate 1.00%  
Term Loan A and Revolving Credit Facility | Maximum    
Debt Instrument [Line Items]    
Basis spread on variable rate 2.00%  
Secured Debt    
Debt Instrument [Line Items]    
Maximum amount netted against funded debt $ (75,000,000)  
Net total leverage ratio maximum 400.00%  
Covenant, interest coverage ratio, minimum 300.00%  
Net total leverage ratio 2.19  
Covenant, interest coverage ratio 628.00%  
Secured Debt | SOFR    
Debt Instrument [Line Items]    
Floor interest rate 0.50%  
Secured Debt | Term Loan A, due 2026    
Debt Instrument [Line Items]    
Debt instrument, face amount $ 1,100,000,000  
Secured Debt | Term Loan A, due 2026 | Interest Rate Swap 1    
Debt Instrument [Line Items]    
Derivative, notional amount $ 500,000,000  
Derivative, fixed interest rate 2.31%  
Secured Debt | Term Loan A, due 2026 | Interest Rate Swap 2    
Debt Instrument [Line Items]    
Derivative, notional amount $ 150,000,000  
Derivative asset $ 150,000,000  
Derivative, fixed interest rate 4.38%  
Secured Debt | Term Loan B, due 2028    
Debt Instrument [Line Items]    
Debt instrument, face amount $ 400,000,000  
Secured Debt | Term Loan B, due 2028 | SOFR    
Debt Instrument [Line Items]    
Basis spread on variable rate 2.00%  
Line of Credit | Revolving Credit Facility    
Debt Instrument [Line Items]    
Maximum borrowing capacity $ 600,000,000