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Financing Agreement - Additional Information (Detail)
$ in Millions
1 Months Ended
Jun. 30, 2021
USD ($)
Dec. 31, 2010
USD ($)
Dec. 31, 2020
USD ($)
Jul. 31, 2018
USD ($)
Jul. 02, 2018
USD ($)
Dec. 31, 2015
USD ($)
Term loan            
Debt Instrument [Line Items]            
Maximum borrowing capacity       $ 1,180.0    
Revolving loan facility $ 900.0   $ 940.0      
Revolving Credit Facility            
Debt Instrument [Line Items]            
Maximum borrowing capacity 1,000.0          
Revolving loan facility 0.0   0.0      
Repayments of principal in next twelve months $ 45.0          
Minimum interest coverage ratio 3.00          
Maximum leverage ratio 3.50          
Senior Notes | Senior Unsecured Notes 4.60% Due May 2021            
Debt Instrument [Line Items]            
Proceeds from Issuance of Debt   $ 75.0        
Long-term debt $ 0.0   75.0      
Senior Notes | Senior Unsecured Notes 4.23% Due July 2028            
Debt Instrument [Line Items]            
Long-term debt 350.0   350.0      
Notes payable, other | Boat Holdings, LLC            
Debt Instrument [Line Items]            
Long-term debt 66.5       $ 76.7  
Notes payable to banks            
Debt Instrument [Line Items]            
Long-term debt 73.8   $ 75.0      
Notes payable to banks | Mortgages            
Debt Instrument [Line Items]            
Long-term debt $ 7.3         $ 14.5