v3.25.2
Summary Of Significant Accounting Policies (Reclassification Out Of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Reclassification Adjustments out of Accumulated Other Comprehensive Income (Loss) [Line Items]        
Operating Revenues $ 531,830 $ 417,442 $ 1,811,262 $ 1,572,742
Total Before Income Tax 200,897 (82,469) 544,791 315,242
Income Tax Expense (51,079) 28,311 (133,629) (70,108)
Net income (loss) available for common stock 149,818 (54,158) 411,162 245,134
Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss)        
Reclassification Adjustments out of Accumulated Other Comprehensive Income (Loss) [Line Items]        
Total Before Income Tax 2,258 75,346 23,601 155,203
Income Tax Expense (608) (20,906) (6,352) (43,064)
Net income (loss) available for common stock 1,650 54,440 17,249 112,139
Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) | Commodity Contracts | Gains and Losses on Derivative Financial Instruments        
Reclassification Adjustments out of Accumulated Other Comprehensive Income (Loss) [Line Items]        
Operating Revenues 2,515 75,462 24,409 155,401
Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) | Foreign Currency Contracts | Gains and Losses on Derivative Financial Instruments        
Reclassification Adjustments out of Accumulated Other Comprehensive Income (Loss) [Line Items]        
Operating Revenues $ (257) $ (116) $ (808) $ (198)