Income Taxes (Schedule Of Effective Income Tax Rate) (Details)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Entity Information [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%	21.00%
State income tax, net of federal tax benefit	3.90%	3.90%	4.00%
Depreciation flow through and amortization	(12.90%)	(7.80%)	(6.30%)
Effective Income Tax Rate Reconciliation, Funds Used during Construction, Equity	(0.30%)	0.90%	0.40%
Effective Income Tax Rate Reconciliation, Noncontrolling Interest Income (Loss), Percent	9.00%	0.00%	0.00%
Other - net	(0.20%)	0.40%	0.40%
Effective tax rate	20.50%	18.40%	19.50%
Indianapolis Power And Light Company
Entity Information [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%	21.00%
State income tax, net of federal tax benefit	3.90%	3.90%	4.00%
Depreciation flow through and amortization	(8.00%)	(5.70%)	(4.90%)
Effective Income Tax Rate Reconciliation, Funds Used during Construction, Equity	(0.20%)	0.70%	0.30%
Effective Income Tax Rate Reconciliation, Noncontrolling Interest Income (Loss), Percent	5.60%	0.00%	0.00%
Other - net	(0.10%)	0.30%	0.30%
Effective tax rate	22.20%	20.20%	20.70%