Income Taxes (Schedule Of Effective Income Tax Rates) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Effective Tax Rate [Line Items]
Overall income tax rate	(27.00%)	2.00%	(24.00%)	1.00%
IPL [Member]
Effective Tax Rate [Line Items]
Overall income tax rate	(56.00%)	(22.00%)	(70.00%)	(20.00%)
WPL [Member]
Effective Tax Rate [Line Items]
Overall income tax rate	3.00%	16.00%	5.00%	15.00%