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Debt (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Mar. 31, 2023
Dec. 31, 2022
Sep. 13, 2021
Mar. 19, 2021
Mar. 31, 2022
Mar. 31, 2021
Sep. 30, 2022
Dec. 31, 2021
Line of Credit Facility [Line Items]                
Loss on extinguishment of debt       $ 7,610,000 $ 0 $ 7,610,000    
2022 EUR Senior Notes                
Line of Credit Facility [Line Items]                
Repayment of debt       400,900,000        
Loss on extinguishment of debt           $ 7,600,000    
Make whole premium       $ 6,600,000        
Term Loan Facility                
Line of Credit Facility [Line Items]                
Line of credit facility, maximum borrowing capacity     $ 300,000,000          
Term Loan Facility | Forecast                
Line of Credit Facility [Line Items]                
Periodic payment $ 10,000,000 $ 10,000,000         $ 7,500,000  
Revolving Credit Facility | Senior Credit Facility                
Line of Credit Facility [Line Items]                
Line of credit facility, maximum borrowing capacity     800,000,000          
Line of credit, commitment fee (as a percentage)         0.175%      
Amount drawn         $ 0     $ 0
Line of credit facility, current borrowing capacity         383,500,000     614,200,000
Letter of Credit | Senior Credit Facility                
Line of Credit Facility [Line Items]                
Line of credit facility, maximum borrowing capacity     750,000,000          
Letters of credit outstanding         $ 87,100,000     $ 78,300,000
Swing Line Loans | Senior Credit Facility                
Line of Credit Facility [Line Items]                
Line of credit facility, maximum borrowing capacity     $ 30,000,000          
LIBOR | Revolving Credit Facility | Senior Credit Facility                
Line of Credit Facility [Line Items]                
Basis spread on variable rate         1.375%      
Base Rate | Revolving Credit Facility | Senior Credit Facility                
Line of Credit Facility [Line Items]                
Basis spread on variable rate         0.375%      
Minimum | Revolving Credit Facility | Senior Credit Facility                
Line of Credit Facility [Line Items]                
Line of credit, commitment fee (as a percentage)     0.08%          
Minimum | LIBOR | Term Loan Facility                
Line of Credit Facility [Line Items]                
Basis spread on variable rate     0.875%          
Minimum | LIBOR | Revolving Credit Facility | Senior Credit Facility                
Line of Credit Facility [Line Items]                
Basis spread on variable rate     1.00%          
Minimum | Base Rate | Term Loan Facility                
Line of Credit Facility [Line Items]                
Basis spread on variable rate     0.00%          
Minimum | Base Rate | Revolving Credit Facility | Senior Credit Facility                
Line of Credit Facility [Line Items]                
Basis spread on variable rate     0.00%          
Maximum | Revolving Credit Facility | Senior Credit Facility                
Line of Credit Facility [Line Items]                
Line of credit, commitment fee (as a percentage)     0.25%          
Maximum | LIBOR | Term Loan Facility                
Line of Credit Facility [Line Items]                
Basis spread on variable rate     1.625%          
Maximum | LIBOR | Revolving Credit Facility | Senior Credit Facility                
Line of Credit Facility [Line Items]                
Basis spread on variable rate     1.75%          
Maximum | Base Rate | Term Loan Facility                
Line of Credit Facility [Line Items]                
Basis spread on variable rate     0.625%          
Maximum | Base Rate | Revolving Credit Facility | Senior Credit Facility                
Line of Credit Facility [Line Items]                
Basis spread on variable rate     0.75%