Commitments And Contingencies (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Sep. 30, 2024
Other Commitments [Line Items]
Estimated minimum liability for environmental remediation	$ 4,000
Other Regulatory Liabilities	147,561	$ 151,452
Environmental Site Remediation Costs
Other Commitments [Line Items]
Other Regulatory Liabilities	$ 3,300