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Debt - Credit Agreement - Additional Information (Details) - USD ($)
3 Months Ended
Dec. 31, 2020
Dec. 28, 2019
Feb. 04, 2021
Jan. 31, 2021
Sep. 30, 2020
Feb. 13, 2020
Debt Instrument [Line Items]            
Credit facility amount           $ 1,000,000,000
Voting interest in domestic subsidiaries pledged against credit facility 100.00%          
Voting interest in foreign subsidiaries pledged against credit facility 65.00%          
Leverage ratio, actual 2.03          
Senior debt leverage ratio, actual 0.03          
Fixed charge coverage ratio, actual 8.43          
Periodic interest payment $ 700,000 $ 16,900,000        
Interest rate during period 3.80% 4.90%        
Foreign Subsidiary | Subsequent Event            
Debt Instrument [Line Items]            
Long-term portion of long term debt     $ 0      
Line of Credit            
Debt Instrument [Line Items]            
Line of credit facility, maximum borrowing capacity expansion amount           $ 500,000,000
Credit facility maturity date Feb. 13, 2025          
Basis spread on Federal Reserve Bank of New York (FRBNY) rate 0.50%          
Basis spread on adjusted LIBOR 1.00%          
Investment limit in foreign subsidiaries $ 100,000,000          
Cash investment limit for acquisition of business $ 200,000,000          
Total leverage ratio 4.50          
Senior secured leverage ratio 3.00          
Minimum fixed charge coverage ratio allowed under debt covenant 3.00          
Line of Credit | Long-term Debt            
Debt Instrument [Line Items]            
Long-term portion of long term debt $ 0       $ 18,000,000  
Line of Credit | Minimum            
Debt Instrument [Line Items]            
Variable interest rate, length of time between updates 30 days          
Credit facility commitment fees percentage 0.175%          
Line of Credit | Minimum | London Interbank Offered Rate (LIBOR)            
Debt Instrument [Line Items]            
Basis spread on variable rate 1.25%          
Line of Credit | Minimum | Base Rate            
Debt Instrument [Line Items]            
Basis spread on variable rate 0.25%          
Line of Credit | Maximum            
Debt Instrument [Line Items]            
Variable interest rate, length of time between updates 180 days          
Credit facility commitment fees percentage 0.30%          
Line of Credit | Maximum | London Interbank Offered Rate (LIBOR)            
Debt Instrument [Line Items]            
Basis spread on variable rate 1.75%          
Line of Credit | Maximum | Base Rate            
Debt Instrument [Line Items]            
Basis spread on variable rate 0.75%          
Line of Credit | Subsequent Event | Long-term Debt            
Debt Instrument [Line Items]            
Annual rate on new borrowings drawn       2.00%