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Summary Of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2023
Schedule of Average Rates of Depreciation | The average rates of depreciation for electric, gas and other properties, consistent with current rate-making practices, were as follows:
| IPL |  | WPL
| 2023 |  | 2022 |  | 2021 |  | 2023 |  | 2022 |  | 2021
Electric - generation | 3.3% |  | 3.4% |  | 3.4% |  | 3.0% |  | 3.4% |  | 3.5%
Electric - distribution | 2.8% |  | 2.8% |  | 2.9% |  | 2.7% |  | 2.5% |  | 2.6%
Electric - other | 5.6% |  | 5.7% |  | 5.7% |  | 6.3% |  | 6.8% |  | 7.4%
Gas | 3.3% |  | 3.3% |  | 3.3% |  | 2.5% |  | 2.4% |  | 2.4%
Other | 6.2% |  | 6.1% |  | 6.1% |  | 4.6% |  | 4.9% |  | 5.4%
Schedule of Allowance for Funds Used During Construction Rate | The AFUDC rates, computed in accordance with the prescribed regulatory formula, were as follows:
| 2023 |  | 2022 |  | 2021
IPL (Wind generation CWIP) | 6.9% |  | 6.9% |  | 7.0%
IPL (other CWIP) | 7.0% |  | 7.0% |  | 7.2%
WPL (retail jurisdiction) | 7.4% |  | 7.0% |  | 7.0%
WPL (wholesale jurisdiction) | 7.1% |  | 6.2% |  | 5.6%
IPL [Member] |
Schedule of Average Rates of Depreciation | The average rates of depreciation for electric, gas and other properties, consistent with current rate-making practices, were as follows:
| IPL |  | WPL
| 2023 |  | 2022 |  | 2021 |  | 2023 |  | 2022 |  | 2021
Electric - generation | 3.3% |  | 3.4% |  | 3.4% |  | 3.0% |  | 3.4% |  | 3.5%
Electric - distribution | 2.8% |  | 2.8% |  | 2.9% |  | 2.7% |  | 2.5% |  | 2.6%
Electric - other | 5.6% |  | 5.7% |  | 5.7% |  | 6.3% |  | 6.8% |  | 7.4%
Gas | 3.3% |  | 3.3% |  | 3.3% |  | 2.5% |  | 2.4% |  | 2.4%
Other | 6.2% |  | 6.1% |  | 6.1% |  | 4.6% |  | 4.9% |  | 5.4%
Schedule of Allowance for Funds Used During Construction Rate | The AFUDC rates, computed in accordance with the prescribed regulatory formula, were as follows:
| 2023 |  | 2022 |  | 2021
IPL (Wind generation CWIP) | 6.9% |  | 6.9% |  | 7.0%
IPL (other CWIP) | 7.0% |  | 7.0% |  | 7.2%
WPL (retail jurisdiction) | 7.4% |  | 7.0% |  | 7.0%
WPL (wholesale jurisdiction) | 7.1% |  | 6.2% |  | 5.6%
WPL [Member] |
Schedule of Average Rates of Depreciation | The average rates of depreciation for electric, gas and other properties, consistent with current rate-making practices, were as follows:
| IPL |  | WPL
| 2023 |  | 2022 |  | 2021 |  | 2023 |  | 2022 |  | 2021
Electric - generation | 3.3% |  | 3.4% |  | 3.4% |  | 3.0% |  | 3.4% |  | 3.5%
Electric - distribution | 2.8% |  | 2.8% |  | 2.9% |  | 2.7% |  | 2.5% |  | 2.6%
Electric - other | 5.6% |  | 5.7% |  | 5.7% |  | 6.3% |  | 6.8% |  | 7.4%
Gas | 3.3% |  | 3.3% |  | 3.3% |  | 2.5% |  | 2.4% |  | 2.4%
Other | 6.2% |  | 6.1% |  | 6.1% |  | 4.6% |  | 4.9% |  | 5.4%
Schedule of Allowance for Funds Used During Construction Rate | The AFUDC rates, computed in accordance with the prescribed regulatory formula, were as follows:
| 2023 |  | 2022 |  | 2021
IPL (Wind generation CWIP) | 6.9% |  | 6.9% |  | 7.0%
IPL (other CWIP) | 7.0% |  | 7.0% |  | 7.2%
WPL (retail jurisdiction) | 7.4% |  | 7.0% |  | 7.0%
WPL (wholesale jurisdiction) | 7.1% |  | 6.2% |  | 5.6%

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- Definition Tabular disclosure of public utility physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation expense and method used, including composite depreciation, and accumulated depreciation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 980 -SubTopic 20 -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481834/980-20-45-1 + Details
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