Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2024

Allowance For Funds Used During Construction / Capitalized Interest

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, 2024 and 2023, AFUDC equity and AFUDC debt were as follows:


	Three months ended
	March 31,
$ in millions		2024		2023
AFUDC equity		$	1.8	$	1.4
AFUDC debt		$	2.1	$	1.6

Schedule of Accumulated Other Comprehensive Income (Loss)

The changes in the components of AOCL during the three months ended March 31, 2024 are as follows:


$ in millions	Change in cash flow hedges		Change in unfunded pension and other postretirement obligations		Total
Balance as of January 1, 2024	$	11.2	$	(15.8)	$	(4.6)


Amounts reclassified from AOCL to earnings	(0.2)		—		(0.2)


Balance as of March 31, 2024	$	11.0	$	(15.8)	$	(4.8)

Reclassification out of Accumulated Other Comprehensive Income

The amounts reclassified out of AOCL by component during the three months ended March 31, 2024 and 2023 are as follows:


Details about AOCL components	Affected line item in the Condensed Consolidated Statements of Operations	Three months ended
		March 31,
$ in millions			2024		2023
Net gains on cash flow hedges (Note 4):
	Interest expense		$	(0.2)	$	(0.2)
	Income tax effect		—		—
	Net of income taxes		(0.2)		(0.2)
Amortization of unfunded pension and other postretirement obligations (Note 7):
	Other expense		0.1		—
	Income tax effect		(0.1)		—
	Net of income taxes		—		—

Total reclassifications for the period, net of income taxes			$	(0.2)	$	(0.2)

Schedule of Supplemental Financial Information

The following table summarizes accounts receivable as of March 31, 2024 and December 31, 2023:


$ in millions	March 31, 2024		December 31, 2023
Accounts receivable, net:
Customer receivables	$	76.7	$	71.0
Unbilled revenue	16.5		19.4
Amounts due from affiliates	1.6		0.8
Other	5.9		2.2
Allowance for credit losses	(0.9)		(0.9)
Total accounts receivable, net	$	99.8	$	92.5

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, 2024 and 2023:


	Three months ended
	March 31,
$ in millions	2024		2023
Allowance for credit losses:
Beginning balance	$	0.9	$	0.5
Current period provision	0.8		0.9
Write-offs charged against allowance	(1.0)		(1.1)
Recoveries collected	0.2		0.3
Ending balance	$	0.9	$	0.6

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, 2024		December 31, 2023
Cash and cash equivalents	$	24.2	$	41.0
Restricted cash (included in Prepayments and other current assets)	0.1		0.1
Total cash, cash equivalents and restricted cash	$	24.3	$	41.1

Schedule of New Accounting Pronouncements

New Accounting Pronouncements Issued But Not Yet Effective

Subsidiaries [Member]

Allowance For Funds Used During Construction / Capitalized Interest

AFUDC


	Three months ended
	March 31,
$ in millions		2024		2023
AFUDC equity		$	1.8	$	1.4
AFUDC debt		$	2.1	$	1.6

Schedule of Accumulated Other Comprehensive Income (Loss)

The changes in the components of AOCL during the three months ended March 31, 2024 are as follows:


$ in millions	Change in Accumulated other comprehensive loss
Balance as of January 1, 2024	$	(27.9)

Amounts reclassified from AOCL to earnings	0.4

Balance as of March 31, 2024	$	(27.5)

Reclassification out of Accumulated Other Comprehensive Income

AOCL by component during the three months ended March 31, 2024 and 2023 are as follows:


Details about AOCL components	Affected line item in the Condensed Statements of Operations	Three months ended
		March 31,
$ in millions			2024		2023
Amortization of unfunded pension and other postretirement obligations (Note 6):
	Other expense		$	0.5	$	0.2
	Income tax effect		(0.1)		(0.1)
	Net of income taxes		0.4		0.1

Total reclassifications for the period, net of income taxes			$	0.4	$	0.1

Schedule of Supplemental Financial Information

The following table summarizes accounts receivable as of March 31, 2024 and December 31, 2023:


$ in millions	March 31, 2024		December 31, 2023
Accounts receivable, net:
Customer receivables	$	75.6	$	70.0
Unbilled revenue	16.5		19.4
Amounts due from affiliates	3.7		2.4
Other	5.8		2.2
Allowance for credit losses	(0.9)		(0.9)
Total accounts receivable, net	$	100.7	$	93.1

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, 2024 and 2023:


	Three months ended
	March 31,
$ in millions	2024		2023
Allowance for credit losses:
Beginning balance	$	0.9	$	0.5
Current period provision	0.8		0.9
Write-offs charged against allowance	(1.0)		(1.1)
Recoveries collected	0.2		0.3
Ending balance	$	0.9	$	0.6

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 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.


ASU Number and Name	Description	Date of Adoption	Effect on the financial statements upon adoption
2023-07 Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures	The amendments in this section are designed to improve the disclosures related to segment reporting on an interim and annual basis. Public companies must disclose significant segment expenses and an amount for other segment items. This will also require that a company disclose its annual disclosures under Topic 280 in each interim period. Furthermore, companies will need to disclose the Chief Operating Decision Maker (“CODM”) and how the CODM assesses the performance of a segment. Lastly, public companies that have a single reportable segment must report the required disclosures under Topic 280.	The amendments in this Update are effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted.	This ASU only affects disclosures, which will be provided when the amendment becomes effective.
2023-09 Income Taxes (Topic 740): Improvements to Income Tax Disclosures	The amendments in this Update require that public business entities on an annual basis (1) disclose specific categories in the rate reconciliation and (2) provide additional information for reconciling items that meet a quantitative threshold. Furthermore, companies are required to disclose a disaggregated amount of income taxes paid at a federal, state, and foreign level as well as a break down of income taxes paid in an jurisdiction that comprises 5% of a company's total income taxes paid. Lastly, this ASU requires that companies disclose income (loss) from continuing operations before income tax at a domestic and foreign level and that companies disclose income tax expense from continuing operations on a federal, state, and foreign level.	The amendments in this Update are effective for fiscal years beginning after December 15, 2024.	This ASU only affects disclosures, which will be provided when the amendment becomes effective.

Schedule of Cash and Cash Equivalents [Table Text Block]

The following table summarizes cash, cash equivalents, and restricted cash amounts reported on the Condensed Balance Sheets that reconcile to the total of such amounts as shown on the Condensed Statements of Cash Flows:


$ in millions	March 31, 2024		December 31, 2023
Cash and cash equivalents	$	7.6	$	15.5
Restricted cash (included in Prepayments and other current assets)	0.1		0.1
Total cash, cash equivalents and restricted cash	$	7.7	$	15.6