Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition - Effect of Changes in Contract Estimates (Details)

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Revenue Recognition - Effect of Changes in Contract Estimates (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Disaggregation of Revenue [Line Items]        
Benefit to/(reduction of) revenue recognized due to changes in contract estimates $ 1,314,929 $ 1,188,677 $ 3,990,327 $ 3,644,775
Benefit to/(reduction of) diluted earnings per share recognized due to changes in contract estimates (in dollars per share) $ 1.46 $ 0.50 $ 3.81 $ 1.67
Change in contract estimates        
Disaggregation of Revenue [Line Items]        
Benefit to/(reduction of) revenue recognized due to changes in contract estimates $ (3,576) $ (2,134) $ (12,772) $ (8,272)
Benefit to/(reduction of) diluted earnings per share recognized due to changes in contract estimates (in dollars per share) $ (0.04) $ (0.03) $ (0.16) $ (0.09)