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Details of Selected Financial Statement Captions - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2023
Cash Paid (Received) During The Period For: |  |  |
Interest | $ 349,222 | $ 308,872 | $ 249,066
Income taxes: |  |  |
Federal | (5,000) | 8,200 | (4,500)
Total income taxes | 4,452 | 15,349 | 14,968
Non-Cash Transactions: |  |  |
Capital expenditures included in current liabilities | 327,814 | 299,908 | 186,912
Interest paid, net of amount capitalized | 155,300 | 163,500 | 117,900
State of Texas |  |  |
Income taxes: |  |  |
State | 7,095 | 5,372 | 17,200
State of Louisiana |  |  |
Income taxes: |  |  |
State | 2,357 | 1,739 | 2,232
Other states |  |  |
Income taxes: |  |  |
State | $ 0 | $ 38 | $ 36

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