Financial Instruments (Tables)

3 Months Ended

Dec. 31, 2023

Financial Instruments, Owned, at Fair Value, by Type, Alternative [Abstract]

Long-Term Debt

Based on these criteria, the fair market value of long-term debt, including current portion, was as follows (in thousands): 

	December 31, 2023				September 30, 2023
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Long-Term Debt	$	2,385,523	$	2,286,446	$	2,384,485	$	2,210,478

Schedule Of Other Investments

The components of the Company's Other Investments are as follows (in thousands):

	At December 31, 2023		At September 30, 2023
Life Insurance Contracts	$	42,639	$	42,242
Equity Mutual Fund	17,484		15,837
Fixed Income Mutual Fund	16,510		15,897
	$	76,633	$	73,976

Schedule of Derivative Financial Instruments Designated And Qualifying As Cash Flow Hedges On The Statement Of Financial Performance

The Effect of Derivative Financial Instruments on the Statement of Financial Performance for the
Three Months Ended December 31, 2023 and 2022 (Thousands of Dollars)
Derivatives in Cash Flow Hedging Relationships	Amount of Derivative Gain or (Loss) Recognized in Other Comprehensive Income (Loss) on the Consolidated Statement of Comprehensive Income (Loss) for the  Three Months Ended  December 31,				Location of Derivative Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) on the Consolidated Balance Sheet into the Consolidated Statement of Income	Amount of Derivative Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) on the Consolidated Balance Sheet into the Consolidated Statement of Income for the  Three Months Ended  December 31,
	2023		2022			2023		2022
Commodity Contracts	$	187,989	$	297,120	Operating Revenue	$	19,755	$	(159,162)
Foreign Currency Contracts	1,178		473		Operating Revenue	(47)		(180)
Total	$	189,167	$	297,593		$	19,708	$	(159,342)