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Income Taxes (Schedule Of Effective Income Tax Rates) (Details) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Effective Tax Rate [Line Items] |  |  |  |
Overall income tax rate | 2.00% | 6.00% | 1.00% | 4.00%
IPL [Member] |  |  |  |
Effective Tax Rate [Line Items] |  |  |  |
Overall income tax rate | (22.00%) | (12.00%) | (20.00%) | (14.00%)
WPL [Member] |  |  |  |
Effective Tax Rate [Line Items] |  |  |  |
Overall income tax rate | 16.00% | 15.00% | 15.00% | 17.00%

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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References 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 + Details
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