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Debt - Narrative (Details)
3 Months Ended 9 Months Ended
Mar. 31, 2024
USD ($)
Mar. 31, 2023
USD ($)
Mar. 31, 2024
USD ($)
Mar. 31, 2023
USD ($)
Apr. 14, 2023
USD ($)
Debt Instrument [Line Items]          
Interest costs $ 13,300,000 $ 15,000,000 $ 39,800,000 $ 41,100,000  
Interest costs, capitalized 400,000 $ 500,000 $ 1,200,000 $ 1,000,000  
Letter of Credit          
Debt Instrument [Line Items]          
Commitment fee rate     0.25%    
Letter of credit fees     1.75%    
Letter of Credit | London Interbank Offered Rate          
Debt Instrument [Line Items]          
Interest rate margin     1.75%    
Letter of Credit | Base Rate          
Debt Instrument [Line Items]          
Interest rate margin     0.75%    
Maximum | Letter of Credit          
Debt Instrument [Line Items]          
Commitment fee rate     0.375%    
Letter of credit fees     2.50%    
Maximum | Letter of Credit | London Interbank Offered Rate          
Debt Instrument [Line Items]          
Interest rate margin     2.50%    
Maximum | Letter of Credit | Base Rate          
Debt Instrument [Line Items]          
Interest rate margin     1.50%    
Minimum | Letter of Credit          
Debt Instrument [Line Items]          
Commitment fee rate     0.25%    
Letter of credit fees     1.75%    
Minimum | Letter of Credit | London Interbank Offered Rate          
Debt Instrument [Line Items]          
Interest rate margin     1.75%    
Minimum | Letter of Credit | Base Rate          
Debt Instrument [Line Items]          
Interest rate margin     0.75%    
Line of Credit          
Debt Instrument [Line Items]          
Credit Agreement available for future borrowings 348,800,000   $ 348,800,000    
Short-term credit agreement borrowings $ 0   $ 0    
Borrowing rate 7.08%   7.08%    
Revolving Credit Facility | Line of Credit          
Debt Instrument [Line Items]          
Current borrowing capacity         $ 350,000,000
Required interest coverage ratio one         3.00
Required consolidated net leverage ratio         4.00
Revolving Credit Facility | Line of Credit | Maximum          
Debt Instrument [Line Items]          
Credit Agreement available for future borrowings         $ 300,000,000
Revolving Credit Facility | Line of Credit | Minimum          
Debt Instrument [Line Items]          
Credit Agreement available for future borrowings         $ 40,000,000
Letter of Credit | Line of Credit          
Debt Instrument [Line Items]          
Letters of credit issued $ 1,200,000   $ 1,200,000