Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2019

Entity Information [Line Items]

Schedule Of Original Cost Of Utility Plant In Service

	As of December 31,
	2019		2018
	(In Thousands)
Production	$	4,154,919	$	3,927,847
Transmission	398,903		394,621
Distribution	1,594,208		1,533,828
General plant	250,582		344,782
Total property, plant and equipment	$	6,398,612	$	6,201,078

Reconciliation Of Asset Retirement Obligation Liability

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

	2019			2018
	(In Thousands)
Balance as of January 1	$	129,451		$	79,535
Liabilities settled	(9,891		)	(8,932		)
Revisions to cash flow and timing estimates	78,153			54,811
Accretion expense	6,506			4,037
Balance as of December 31	$	204,219		$	129,451

Indianapolis Power And Light Company

Entity Information [Line Items]

Schedule Of Original Cost Of Utility Plant In Service

	As of December 31,
	2019		2018
	(In Thousands)
Production	$	4,154,919	$	3,927,847
Transmission	398,903		394,621
Distribution	1,594,208		1,533,828
General plant	250,582		344,782
Total property, plant and equipment	$	6,398,612	$	6,201,078

Reconciliation Of Asset Retirement Obligation Liability

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

	2019			2018
	(In Thousands)
Balance as of January 1	$	129,451		$	79,535
Liabilities settled	(9,891		)	(8,932		)
Revisions to cash flow and timing estimates	78,153			54,811
Accretion expense	6,506			4,037
Balance as of December 31	$	204,219		$	129,451