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Commitments and Contingencies (Summary of Undiscounted Environmental Remediation Liability Classifications) (Details) - USD ($) $ in Thousands | Aug. 31, 2025 | Aug. 31, 2024
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Commitments and Contingencies Disclosure [Abstract] |  |
Other current liabilities | $ 509 | $ 462
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration] | Other Liabilities, Current | Other Liabilities, Current
Other noncurrent liabilities | $ 10,123 | $ 10,167
Environmental Loss Contingency, Noncurrent, Statement of Financial Position [Extensible Enumeration] | Other Liabilities, Noncurrent | Other Liabilities, Noncurrent
Total environmental remediation liabilities | $ 10,632 | $ 10,629

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