Asset Retirement Obligations (Tables)

12 Months Ended

Sep. 30, 2022

Asset Retirement Obligation [Abstract]

Schedule Of Change In Asset Retirement Obligation

The following is a reconciliation of the change in the Company’s asset retirement obligations:

	Year Ended September 30
	2022		2021		2020
	(Thousands)
Balance at Beginning of Year	$	209,639	$	192,228	$	127,458
Liabilities Incurred	2,401		7,035		61,246
Revisions of Estimates	10,700		14,509		3,267
Liabilities Settled	(71,171)		(14,270)		(7,268)
Accretion Expense	9,976		10,137		7,525
Balance at End of Year	$	161,545	$	209,639	$	192,228