Annual report pursuant to Section 13 and 15(d)

Debt - Narrative (Details)

v3.21.2
Debt - Narrative (Details)
3 Months Ended 12 Months Ended
May 28, 2021
USD ($)
Dec. 31, 2021
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Sep. 30, 2019
USD ($)
Debt Instrument [Line Items]          
Annual effective interest rate     2.05%    
Outstanding balance     $ 1,509,692,000 $ 28,895,000  
Costs related to debt financing     $ 8,509,000 $ 0 $ 0
Secured Debt          
Debt Instrument [Line Items]          
Floor interest rate 0.50%        
Net total leverage ratio     2.3    
Maximum amount netted against funded debt     $ (75,000,000)    
Net total leverage ratio maximum     400.00%    
Covenant, interest coverage ratio, minimum     300.00%    
Covenant, interest coverage ratio     1700.00%    
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 | LIBOR          
Debt Instrument [Line Items]          
Basis spread on variable rate 1.75%        
Net total leverage ratio 2.5        
Secured Debt | Term Loan A, due 2026 | LIBOR | Forecast          
Debt Instrument [Line Items]          
Basis spread on variable rate   1.50%      
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 | LIBOR          
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        
Outstanding balance     $ 0    
Bridge Loan          
Debt Instrument [Line Items]          
Costs related to debt financing     $ 8,500,000