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Summary Of Significant Accounting Policies (Tables)
 12 Months Ended
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:
IPLWPL
202320222021202320222021
Electric - generation3.3%3.4%3.4%3.0%3.4%3.5%
Electric - distribution2.8%2.8%2.9%2.7%2.5%2.6%
Electric - other5.6%5.7%5.7%6.3%6.8%7.4%
Gas3.3%3.3%3.3%2.5%2.4%2.4%
Other6.2%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:
202320222021
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:
IPLWPL
202320222021202320222021
Electric - generation3.3%3.4%3.4%3.0%3.4%3.5%
Electric - distribution2.8%2.8%2.9%2.7%2.5%2.6%
Electric - other5.6%5.7%5.7%6.3%6.8%7.4%
Gas3.3%3.3%3.3%2.5%2.4%2.4%
Other6.2%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:
202320222021
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:
IPLWPL
202320222021202320222021
Electric - generation3.3%3.4%3.4%3.0%3.4%3.5%
Electric - distribution2.8%2.8%2.9%2.7%2.5%2.6%
Electric - other5.6%5.7%5.7%6.3%6.8%7.4%
Gas3.3%3.3%3.3%2.5%2.4%2.4%
Other6.2%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:
202320222021
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%