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Revenues and Contract Balances (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2022
Dec. 31, 2021
Change In Accounting Estimate [Line Items]        
Income before income taxes $ 110,925 $ 113,098 $ 227,535 $ 229,729
Diluted earnings per share $ 3.68 $ 3.83 $ 7.44 $ 7.52
Change in Contract with Customer, Liability [Abstract]        
Liability, revenue recognized $ 7,600 $ 13,600 $ 58,100 $ 68,300
EAC Adjustments        
Change In Accounting Estimate [Line Items]        
Income before income taxes $ 5,800 $ 5,500 $ 11,500 $ 8,200
Diluted earnings per share $ 0.18 $ 0.17 $ 0.36 $ 0.26