Overview and Summary Of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2024

Accounting Policies [Abstract]

Receivable [Policy Text Block]

Accounts Receivable and Allowance for Credit Losses

The following table summarizes our accounts receivable balances at September 30, 2024 and December 31, 2023:

	September 30,		December 31,
	2024		2023
	(In Thousands)
Accounts receivable, net
Customer receivables	$	196,714	$	125,715
Unbilled revenue	98,194		91,463
Amounts due from related parties	7,005		5,178
Other	37,875		13,848
Allowance for credit losses	(17,087)		(2,283)
Total accounts receivable, net	$	322,701	$	233,921

Schedule of Asset Retirement Obligations [Table Text Block]

AES Indiana’s ARO liabilities relate primarily to environmental issues involving asbestos-containing materials, ash ponds, landfills and miscellaneous contaminants associated with its generating plants, transmission system and distribution system. The following is a roll forward of the ARO legal liabilities for the nine months ended September 30, 2024 and 2023, respectively:

	Nine Months Ended September 30,
	2024		2023
	(In Thousands)
Balance as of January 1	$	249,930	$	218,729
Liabilities incurred	8,864		656
Liabilities settled	(3,202)		(9,946)
Revisions to cash flow and timing estimates	81,714		—
Accretion expense	9,244		7,352
Balance as of September 30	$	346,550	$	216,791
Less: ARO liabilities, current	26,384		—
ARO liabilities, non-current	$	320,166	$	216,791

Consolidation, Policy [Policy Text Block]

Consolidation

The accompanying Financial Statements include the accounts of IPALCO Enterprises, Inc., AES Indiana and Mid-America Capital Resources, Inc., a non-regulated wholly-owned subsidiary of IPALCO. Furthermore, VIEs in which the Company has an ownership interest and is the primary beneficiary, thus controlling the VIE, have been consolidated. All significant intercompany amounts have been eliminated in consolidation.

Use Of Management Estimates

Use of Management Estimates

The preparation of financial statements in conformity with GAAP requires that management make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. The reported amounts of revenue and expenses during the reporting period may also be affected by the estimates and assumptions management is required to make. Actual results may differ from those estimates. Significant items subject to such estimates and assumptions include: recognition of revenue including unbilled revenue; the carrying value of property, plant and equipment; the valuation of insurance and claims liabilities; the valuation of allowances for credit losses and deferred income taxes; regulatory assets and liabilities; liabilities recorded for income tax exposures; litigation; contingencies; and assets and liabilities related to AROs and employee benefits.

Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]

Cash, Cash Equivalents and Restricted Cash

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

	September 30,		December 31,
	2024		2023
	(In Thousands)
Cash, cash equivalents and restricted cash
Cash and cash equivalents	$	48,308	$	28,579
Restricted cash (included in Prepayments and other current assets)	5		5
Total cash, cash equivalents and restricted cash	$	48,313	$	28,584

Financing Receivable, Allowance for Credit Losses, Policy for Uncollectible Amounts [Policy Text Block]

The following table is a rollforward of our allowance for credit losses related to the accounts receivable balances for the periods indicated:

	Nine Months Ended September 30,
$ in Thousands	2024		2023
Allowance for credit losses:
Beginning balance	$	2,283	$	1,117
Current period provision	14,018		5,536
Net write-offs charged against allowance	(577)		(6,940)
Recoveries collected	1,363		1,351
Ending Balance	$	17,087	$	1,064