Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2023

Entity Information [Line Items]

Schedule Of Original Cost Of Utility Plant In Service

	As of December 31,
	2023		2022
	(In Thousands)
Production	$	3,942,052	$	4,164,416
Transmission	487,527		461,245
Distribution	2,304,526		2,045,579
General plant	348,338		311,074
Total property, plant and equipment	$	7,082,443	$	6,982,314

Reconciliation Of Asset Retirement Obligation Liability

The following is a roll forward of the ARO legal liability year end balances:

	2023		2022
	(In Thousands)
Balance as of January 1	$	218,729	$	189,509
Liabilities incurred	17,080		1,159
Liabilities settled	(11,902)		(24,699)
Revisions to cash flow and timing estimates	12,921		44,679
Accretion expense	13,102		8,081
Balance as of December 31	$	249,930	$	218,729

Indianapolis Power And Light Company

Entity Information [Line Items]

Schedule Of Original Cost Of Utility Plant In Service

	As of December 31,
	2023		2022
	(In Thousands)
Production	$	3,942,052	$	4,164,416
Transmission	487,527		461,245
Distribution	2,304,526		2,045,579
General plant	348,338		311,074
Total property, plant and equipment	$	7,082,443	$	6,982,314

Reconciliation Of Asset Retirement Obligation Liability

The following is a roll forward of the ARO legal liability year end balances:

	2023		2022
	(In Thousands)
Balance as of January 1	$	218,729	$	189,509
Liabilities incurred	17,080		1,159
Liabilities settled	(11,902)		(24,699)
Revisions to cash flow and timing estimates	12,921		44,679
Accretion expense	13,102		8,081
Balance as of December 31	$	249,930	$	218,729