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Revenue (Tables)
 12 Months Ended
Dec. 31, 2023
Disaggregation of Revenue [Line Items]  
Disaggregation of Revenue [Table Text Block] ’s revenue from contracts with customers was $1,616.5 million, $1,760.0 million and $1,389.2 million for the years ended December 31, 2023, 2022 and 2021, respectively. The following table presents our revenue from contracts with customers and other revenue (in thousands):
For the Years Ended December 31,
202320222021
Retail Revenue
     Retail revenue from contracts with customers:
          Residential$660,559 $688,487 $595,692 
          Small commercial and industrial241,800 247,655 211,997 
          Large commercial and industrial619,899 625,351 518,069 
          Public lighting9,767 9,832 8,888 
          Other (1)
14,016 17,845 16,785 
               Total retail revenue from contracts with customers1,546,041 1,589,170 1,351,431 
     Alternative revenue programs30,414 29,171 35,248 
Wholesale Revenue
     Wholesale revenue from contracts with customers56,557 148,517 25,059 
Miscellaneous Revenue
          Capacity revenue8,210 11,750 734 
          Transmission and other revenue5,654 10,534 11,480 
               Total miscellaneous revenue from contracts with customers13,864 22,284 12,214 
     Other miscellaneous revenue (2)
3,041 2,569 2,180 
Total Revenue$1,649,917 $1,791,711 $1,426,132 
Revenue from Contract with Customer [Text Block] REVENUE
Revenue is primarily earned from retail and wholesale electricity sales and electricity transmission and distribution delivery services. Revenue is recognized upon transfer of control of promised goods or services to customers in an amount that reflects the consideration to which we expect to be entitled in exchange for those goods or services. Revenue is recorded net of any taxes assessed on and collected from customers, which are remitted to the governmental authorities.

Retail revenue - AES Indiana energy sales to utility customers are based on the reading of meters at the customer’s location that occurs on a systematic basis throughout the month. AES Indiana sells electricity directly to end-users, such as homes and businesses, and bills customers directly. Retail revenue have a single performance obligation, as the promise to transfer energy and other distribution and/or transmission services are not separately identifiable from other promises in the contracts and, therefore, are not distinct. Additionally, as the performance obligation is satisfied over time as energy is delivered, and the same method is used to measure progress, the performance obligation meets the criteria to be considered a series.

In exchange for the exclusive right to sell or distribute electricity in our service area, AES Indiana is subject to rate regulation by federal and state regulators. This regulation sets the framework for the prices (“tariffs”) that AES Indiana is allowed to charge customers for electric services. Since tariffs are approved by the regulator, the price that AES Indiana has the right to bill corresponds directly with the value to the customer of AES Indiana’s performance completed in each period. Therefore, revenue under these contracts is recognized using an output method measured by the MWhs delivered each month at the approved tariff. Customer payments are typically due on a monthly basis.

Wholesale revenue - Power produced at the generation stations in excess of our retail load is sold into the MISO market. Such sales are made at either the day-ahead or real-time hourly market price, and these sales are classified as wholesale revenue. We sell to and purchase power from MISO, and such sales and purchases are settled and accounted for on a net hourly basis.

In the MISO market, wholesale revenue is recorded at the spot price based on the quantities of MWh delivered in each hour during each month. As a member of MISO, we are obligated to declare the availability of our energy production into the wholesale energy market, but we are not obligated to commit our previously declared availability. As such, contract terms end as the energy for each day is delivered to the market in the case of the day-ahead market and for each hour in the case of the real-time market.

Miscellaneous revenue - Miscellaneous revenue is mainly comprised of MISO transmission revenue and capacity revenue. MISO transmission revenue is earned when AES Indiana’s power lines are used in transmission of energy by power producers other than AES Indiana. As AES Indiana owns and operates transmission lines in central and southern Indiana, demand charges collected from network customers by MISO are allocated to the appropriate transmission owners (including AES Indiana) and recognized as transmission revenue. Capacity revenue is also included in miscellaneous revenue, and represent compensation received from MISO for making installed generation capacity available to satisfy system integrity and reliability requirements through the annual MISO capacity auction. Capacity, which is a stand-ready obligation to deliver energy when called upon by the RTO, is measured using MWs.
Transmission and capacity revenue each have a single performance obligation, as they each represent a distinct service or good. Additionally, as these performance obligations are satisfied over time and the same method is used to measure progress, the performance obligations meet the criteria to be considered a series. For transmission revenue, the price that the transmission operator has the right to bill corresponds directly with the value to the customer of AES Indiana’s performance completed in each period as the price paid is the transmission operator's allocation of the tariff rate (as approved by the regulator) charged to network participants. For capacity revenue, the capacity price that clears at the auction is fixed and AES Indiana is compensated based on the cleared MWs and cleared price.

AES Indiana’s revenue from contracts with customers was $1,616.5 million, $1,760.0 million and $1,389.2 million for the years ended December 31, 2023, 2022 and 2021, respectively. The following table presents our revenue from contracts with customers and other revenue (in thousands):
For the Years Ended December 31,
202320222021
Retail Revenue
     Retail revenue from contracts with customers:
          Residential$660,559 $688,487 $595,692 
          Small commercial and industrial241,800 247,655 211,997 
          Large commercial and industrial619,899 625,351 518,069 
          Public lighting9,767 9,832 8,888 
          Other (1)
14,016 17,845 16,785 
               Total retail revenue from contracts with customers1,546,041 1,589,170 1,351,431 
     Alternative revenue programs30,414 29,171 35,248 
Wholesale Revenue
     Wholesale revenue from contracts with customers56,557 148,517 25,059 
Miscellaneous Revenue
          Capacity revenue8,210 11,750 734 
          Transmission and other revenue5,654 10,534 11,480 
               Total miscellaneous revenue from contracts with customers13,864 22,284 12,214 
     Other miscellaneous revenue (2)
3,041 2,569 2,180 
Total Revenue$1,649,917 $1,791,711 $1,426,132 
    
(1) Other retail revenue from contracts with customers includes miscellaneous charges to customers, including reconnection and late fee charges.
(2) Other miscellaneous revenue includes lease and other miscellaneous revenue not accounted for under ASC 606.

The balances of receivables from contracts with customers were $218.8 million and $198.3 million as of December 31, 2023 and 2022, respectively. Payment terms for all receivables from contracts with customers typically do not extend beyond 30 days, unless a customer qualifies for payment extension.

The Company has elected to apply the optional disclosure exemptions under ASC 606. Therefore, the Company has not included disclosure pertaining to revenue expected to be recognized in any future year related to remaining performance obligations, as we exclude contracts with an original length of one year or less, contracts for which we recognize revenue based on the amount we have the right to invoice for services performed, and contracts with variable consideration allocated entirely to a wholly unsatisfied performance obligation when the consideration relates specifically to our efforts to satisfy the performance obligation and depicts the amount to which we expect to be entitled.
Indianapolis Power And Light Company  
Disaggregation of Revenue [Line Items]  
Disaggregation of Revenue [Table Text Block] he following table presents AES Indiana's revenue from contracts with customers and other revenue (in thousands):
For the Years Ended December 31,
202320222021
Retail Revenue
     Retail revenue from contracts with customers:
          Residential$660,559 $688,487 $595,692 
          Small commercial and industrial241,800 247,655 211,997 
          Large commercial and industrial619,899 625,351 518,069 
          Public lighting9,767 9,832 8,888 
          Other (1)
14,016 17,845 16,785 
               Total retail revenue from contracts with customers1,546,041 1,589,170 1,351,431 
     Alternative revenue programs30,414 29,171 35,248 
Wholesale Revenue
     Wholesale revenue from contracts with customers56,557 148,517 25,059 
Miscellaneous Revenue
          Capacity revenue8,210 11,750 734 
          Transmission and other revenue5,654 10,534 11,480 
               Total miscellaneous revenue from contracts with customers13,864 22,284 12,214 
     Other miscellaneous revenue (2)
3,041 2,569 2,180 
Total Revenue$1,649,917 $1,791,711 $1,426,132 
    
(1) Other retail revenue from contracts with customers includes miscellaneous charges to customers, including reconnection and late fee charges.
(2) Other miscellaneous revenue includes lease and other miscellaneous revenue not accounted for under ASC 606.
Revenue from Contract with Customer [Text Block]
Revenue is primarily earned from retail and wholesale electricity sales and electricity transmission and distribution delivery services. Revenue is recognized upon transfer of control of promised goods or services to customers in an amount that reflects the consideration to which we expect to be entitled in exchange for those goods or services. Revenue is recorded net of any taxes assessed on and collected from customers, which are remitted to the governmental authorities.

Retail revenue - AES Indiana energy sales to utility customers are based on the reading of meters at the customer’s location that occurs on a systematic basis throughout the month. AES Indiana sells electricity directly to end-users, such as homes and businesses, and bills customers directly. Retail revenue have a single performance obligation, as the promise to transfer energy and other distribution and/or transmission services are not separately identifiable from other promises in the contracts and, therefore, are not distinct. Additionally, as the performance obligation is satisfied over time as energy is delivered, and the same method is used to measure progress, the performance obligation meets the criteria to be considered a series.

In exchange for the exclusive right to sell or distribute electricity in our service area, AES Indiana is subject to rate regulation by federal and state regulators. This regulation sets the framework for the prices (“tariffs”) that AES Indiana is allowed to charge customers for electric services. Since tariffs are approved by the regulator, the price that AES Indiana has the right to bill corresponds directly with the value to the customer of AES Indiana’s performance completed in each period. Therefore, revenue under these contracts is recognized using an output method measured by the MWhs delivered each month at the approved tariff. Customer payments are typically due on a monthly basis.

Wholesale revenue - Power produced at the generation stations in excess of our retail load is sold into the MISO market. Such sales are made at either the day-ahead or real-time hourly market price, and these sales are classified as wholesale revenue. We sell to and purchase power from MISO, and such sales and purchases are settled and accounted for on a net hourly basis.

In the MISO market, wholesale revenue is recorded at the spot price based on the quantities of MWh delivered in each hour during each month. As a member of MISO, we are obligated to declare the availability of our energy production into the wholesale energy market, but we are not obligated to commit our previously declared availability. As such, contract terms end as the energy for each day is delivered to the market in the case of the day-ahead market and for each hour in the case of the real-time market.
Miscellaneous revenue - Miscellaneous revenue is mainly comprised of MISO transmission revenue and capacity revenue. MISO transmission revenue is earned when AES Indiana’s power lines are used in transmission of energy by power producers other than AES Indiana. As AES Indiana owns and operates transmission lines in central and southern Indiana, demand charges collected from network customers by MISO are allocated to the appropriate transmission owners (including AES Indiana) and recognized as transmission revenue. Capacity revenue is also included in miscellaneous revenue, and represent compensation received from MISO for making installed generation capacity available to satisfy system integrity and reliability requirements through the annual MISO capacity auction. Capacity, which is a stand-ready obligation to deliver energy when called upon by the RTO, is measured using MWs.

Transmission and capacity revenue each have a single performance obligation, as they each represent a distinct service or good. Additionally, as these performance obligations are satisfied over time and the same method is used to measure progress, the performance obligations meet the criteria to be considered a series. For transmission revenue, the price that the transmission operator has the right to bill corresponds directly with the value to the customer of AES Indiana’s performance completed in each period as the price paid is the transmission operator's allocation of the tariff rate (as approved by the regulator) charged to network participants. For capacity revenue, the capacity price that clears at the auction is fixed and AES Indiana is compensated based on the cleared MWs and cleared price.

AES Indiana’s revenue from contracts with customers was $1,616.5 million, $1,760.0 million and $1,389.2 million for the years ended December 31, 2023, 2022 and 2021, respectively. The following table presents AES Indiana's revenue from contracts with customers and other revenue (in thousands):
For the Years Ended December 31,
202320222021
Retail Revenue
     Retail revenue from contracts with customers:
          Residential$660,559 $688,487 $595,692 
          Small commercial and industrial241,800 247,655 211,997 
          Large commercial and industrial619,899 625,351 518,069 
          Public lighting9,767 9,832 8,888 
          Other (1)
14,016 17,845 16,785 
               Total retail revenue from contracts with customers1,546,041 1,589,170 1,351,431 
     Alternative revenue programs30,414 29,171 35,248 
Wholesale Revenue
     Wholesale revenue from contracts with customers56,557 148,517 25,059 
Miscellaneous Revenue
          Capacity revenue8,210 11,750 734 
          Transmission and other revenue5,654 10,534 11,480 
               Total miscellaneous revenue from contracts with customers13,864 22,284 12,214 
     Other miscellaneous revenue (2)
3,041 2,569 2,180 
Total Revenue$1,649,917 $1,791,711 $1,426,132 
    
(1) Other retail revenue from contracts with customers includes miscellaneous charges to customers, including reconnection and late fee charges.
(2) Other miscellaneous revenue includes lease and other miscellaneous revenue not accounted for under ASC 606.

The balances of receivables from contracts with customers were $218.8 million and $198.3 million as of December 31, 2023 and 2022, respectively. Payment terms for all receivables from contracts with customers typically do not extend beyond 30 days, unless a customer qualifies for payment extension.

AES Indiana has elected to apply the optional disclosure exemptions under ASC 606. Therefore, AES Indiana has not included disclosure pertaining to revenue expected to be recognized in any future year related to remaining performance obligations, as we exclude contracts with an original length of one year or less, contracts for which we recognize revenue based on the amount we have the right to invoice for services performed, and contracts with variable consideration allocated entirely to a wholly unsatisfied performance obligation when the consideration
relates specifically to our efforts to satisfy the performance obligation and depicts the amount to which AES Indiana expects to be entitled.