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Debt (Narrative) (Details) - USD ($)
1 Months Ended 3 Months Ended
Feb. 28, 2022
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Line of Credit Facility [Line Items]        
Line of credit   $ 400,000,000   $ 73,500,000
Repayments of senior debt   $ 75,000,000 $ 0  
Senior Notes        
Line of Credit Facility [Line Items]        
Consolidated leverage ratio, maximum   350.00%    
Senior Notes | 2021 Series A Notes        
Line of Credit Facility [Line Items]        
Repayments of senior debt $ 75,000,000      
Revolving Credit Facility        
Line of Credit Facility [Line Items]        
Line of credit   $ 400,000,000   $ 73,500,000
Stated interest rate   1.20%   1.10%
Line of credit facility, remaining borrowing capacity   $ 598,600,000    
Line of credit facility, maximum borrowing capacity   1,000,000,000    
Reduction of credit facility availability   $ 1,400,000    
Consolidated leverage ratio, maximum   350.00%