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Debt - Shelf Facility Agreements Narrative (Details)
6 Months Ended
Jan. 31, 2023
USD ($)
Mar. 04, 2023
USD ($)
Feb. 26, 2022
USD ($)
Sep. 03, 2022
Jan. 31, 2018
USD ($)
Line of Credit Facility [Line Items]          
Repayments of senior debt   $ 50,000,000 $ 0    
Shelf Facility Agreements [Member]          
Line of Credit Facility [Line Items]          
Credit facility, maximum borrowing capacity         $ 250,000,000
Private Placement Debt and Shelf Facility Agreements [Member]          
Line of Credit Facility [Line Items]          
Maximum consolidated leverage ratio of total indebtedness to EBITDA   3.00      
Maximum consolidated leverage ratio of total indebtedness to EBITDA after material acquisition   3.50      
Minimum consolidated interest coverage ratio of EBITDA to total interest expense   3.00      
Series Notes Due January 12, 2023 [Member] | Shelf Facility Agreements [Member]          
Line of Credit Facility [Line Items]          
Interest rate   3.04%      
Series Notes Due March 5, 2024 [Member] | Shelf Facility Agreements [Member]          
Line of Credit Facility [Line Items]          
Outstanding balance   $ 50,000,000      
Interest rate   2.40%      
Senior notes due January 12, 2023 | Private Placement Debt          
Line of Credit Facility [Line Items]          
Interest rate   3.04%   3.04%  
Repayments of senior debt $ 50,000,000