Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2023

Asset Retirement Obligation [Abstract]

Schedule of Change in Asset Retirement Obligation

A reconciliation of the Company's liability, which the current portion is included in other accrued liabilities on the Consolidated Balance Sheets, for the years ended December 31 was as follows:

	2023		2022
	(In thousands)
Balance at beginning of year	$	373,147	$	435,280
Liabilities incurred	533		1,315
Liabilities settled	(6,633)		(7,529)
Accretion expense*	18,894		21,773
Revisions in estimates	(787)		(77,692)
Balance at end of year	$	385,154	$	373,147

*Includes $18.9 million and $21.8 million in 2023 and 2022, respectively, recorded to regulatory assets.