Income Taxes (Schedule Of Effective Income Tax Rates) (Details)	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Effective Tax Rate [Line Items]
Overall income tax rate	(7.00%)	(1.00%)
IPL [Member]
Effective Tax Rate [Line Items]
Overall income tax rate	(19.00%)	(18.00%)
WPL [Member]
Effective Tax Rate [Line Items]
Overall income tax rate	6.00%	12.00%

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-12

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