v3.26.1
Summary of Significant Accounting Policies (Tables)
 3 Months Ended
Mar. 31, 2026
Related Party Transaction [Line Items]  
Allowance For Funds Used During Construction / Capitalized Interest
AFUDC
AES Ohio capitalizes an allowance for the net cost of funds (interest on borrowed funds and a reasonable rate of return on equity funds) used for construction purposes during the period of construction with a corresponding credit to income. During the three months ended March 31, 2026 and 2025, AFUDC equity and AFUDC debt were as follows:
Three months ended
March 31,
$ in millions
2026
2025
AFUDC equity
$
0.7 
$
— 
AFUDC debt
$
0.4 
$
1.4 
Schedule of Accumulated Other Comprehensive Income (Loss)
The changes in the components of AOCI during the three months ended March 31, 2026 are as follows:

$ in millions
Change in cash flow hedges
Change in unfunded pension and other postretirement obligations
Total
Balance as of January 1, 2026
$
17.4 
$
(1.7)
$
15.7 
Amounts reclassified from AOCI to earnings
(0.2)
— 
(0.2)
Balance as of March 31, 2026
$
17.2 
$
(1.7)
$
15.5 
Schedule of Supplemental Financial Information
The following table summarizes accounts receivable as of March 31, 2026 and December 31, 2025:
$ in millions
March 31, 2026
December 31, 2025
Accounts receivable, net:
Customer receivables
$
143.6 
$
117.3 
Unbilled revenue
31.0 
40.9 
Amounts due from affiliates
1.7 
1.7 
Other
1.7 
10.0 
Allowance for credit losses
(11.9)
(8.8)
Total accounts receivable, net
$
166.1 
$
161.1 
Accounts Receivable, Allowance for Credit Loss
The following table is a roll forward of our allowance for credit losses related to the accounts receivable balances for the three months ended March 31, 2026 and 2025:
Three months ended
March 31,
$ in millions
2026
2025
Allowance for credit losses:
Beginning balance
$
8.8 
$
6.1 
Current period provision
6.2 
1.8 
Write-offs charged against allowance
(3.2)
(0.1)
Recoveries
0.1 
0.3 
Ending balance
$
11.9 
$
8.1 

The allowance for credit losses primarily relates to utility customer receivables, including unbilled amounts. Expected credit loss estimates are developed by disaggregating customers into those with similar credit risk characteristics and using historical credit loss experience. In addition, we also consider how current and future economic conditions are expected to impact collectability, as applicable, of our receivables balance. Amounts are written off when reasonable collections efforts have been exhausted. Following the implementation of AES Ohio's customer billing system upgrade in the third quarter of 2024, a temporary pause in customer disconnections, certain collection efforts, and write-off processes contributed to increased provisions and allowance for credit losses throughout 2025. Although AES Ohio reinstated these processes in June 2025, the resumption of these activities resulted in increased write-offs in the current period. Current period provisions also increased compared to the prior period, reflecting updated expected loss assumptions.
New Accounting Pronouncements, Policy [Policy Text Block]
New Accounting Pronouncements Issued But Not Yet Effective
The following table provides a brief description of recent accounting pronouncements that could have an impact on our consolidated financial statements. Accounting pronouncements not listed below were assessed and determined to be either not applicable or are expected to have no material impact on our consolidated financial statements.
Schedule of Cash and Cash Equivalents [Table Text Block]
The following table summarizes cash, cash equivalents, and restricted cash amounts reported on the Condensed Consolidated Balance Sheets that reconcile to the total of such amounts as shown on the Condensed Consolidated Statements of Cash Flows:
$ in millions
March 31, 2026
December 31, 2025
Cash and cash equivalents
$
69.9 
$
82.9 
Restricted cash (included in Prepayments and other current assets)
0.1 
0.1 
Total cash, cash equivalents and restricted cash
$
70.0 
$
83.0 
Schedule of New Accounting Pronouncements
New Accounting Pronouncements Issued But Not Yet Effective
The following table provides a brief description of recent accounting pronouncements that could have an impact on our consolidated financial statements. Accounting pronouncements not listed below were assessed and determined to be either not applicable or are expected to have no material impact on our consolidated financial statements.