Financial Instruments (Tables)

3 Months Ended

Dec. 31, 2025

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value

The following tables present the fair value and balance sheet classification of our financial instruments as of December 31, 2025 and September 30, 2025. The gross amounts of recognized assets and liabilities are netted within our condensed consolidated balance sheets to the extent that we have netting arrangements with our counterparties. However, as of December 31, 2025 and September 30, 2025, no gross amounts and no cash collateral were netted within our consolidated balance sheet.

		December 31, 2025
	Balance Sheet Location	Assets		Liabilities
		(In thousands)
Not Designated As Hedges:
Commodity contracts	Other current assets / Other current liabilities	2,450		(10,546)
Commodity contracts	Deferred charges and other assets / Deferred credits and other liabilities	1,182		(346)
Total		3,632		(10,892)
Gross / Net Financial Instruments		$	3,632	$	(10,892)

		September 30, 2025
	Balance Sheet Location	Assets		Liabilities
		(In thousands)
Not Designated As Hedges:
Commodity contracts	Other current assets / Other current liabilities	5,303		(6,339)
Commodity contracts	Deferred charges and other assets / Deferred credits and other liabilities	4,594		(146)
Total		9,897		(6,485)
Gross / Net Financial Instruments		$	9,897	$	(6,485)

Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)

The following table summarizes the gains and losses arising from hedging transactions that were recognized as a component of other comprehensive income (loss), net of taxes, for the three months ended December 31, 2025 and 2024.

	Three Months Ended December 31
	2025		2024
	(In thousands)
Increase in fair value:
Interest rate agreements	$	—	$	19,719
Recognition of gains in earnings due to settlements:
Interest rate agreements	(4,806)		(3,158)
Total other comprehensive income (loss) from hedging, net of tax	$	(4,806)	$	16,561

Schedule of Expected Deferred Gains (Losses) Recognition

The following amounts, net of deferred taxes, represent the expected recognition in earnings of the deferred net gains recorded in AOCI associated with our interest rate agreements, based upon the fair values of these agreements at the date of settlement. The remaining amortization periods for these settled amounts extend through fiscal 2056. However, the table below does not include the expected recognition in earnings of our outstanding interest rate swaps as those instruments have not yet settled.

	Interest Rate Agreements
	(In thousands)
Next twelve months	$	19,118
Thereafter	450,882
Total	$	470,000