Ipalco Enterprises 10-Q 4 Aug 22 2022 Q2 Quarterly report Financial data

Cover

Cover - shares	6 Months Ended
	Jun. 30, 2022	Aug. 04, 2022
Entity Information [Line Items]
Document Fiscal Year Focus	2022
Entity Central Index Key	0000728391
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Incorporation, State or Country Code	IN
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Jun. 30, 2022
Amendment Flag	false
Document Fiscal Period Focus	Q2
Entity Registrant Name	IPALCO ENTERPRISES, INC.
Entity Tax Identification Number	35-1575582
Entity Address, Postal Zip Code	46204
Entity File Number	1-8644
Entity Address, Address Line One	One Monument Circle
Entity Address, City or Town	Indianapolis
Entity Address, State or Province	IN
City Area Code	317
Local Phone Number	261-8261
Entity Current Reporting Status	No
Entity Interactive Data Current	Yes
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Common Stock, Shares, Outstanding		108,907,318
AES U.S. Investments [Member]
Entity Information [Line Items]
Common Stock, Shares, Outstanding		89,685,177
CDPQ [Member]
Entity Information [Line Items]
Common Stock, Shares, Outstanding		19,222,141

Unaudited Condensed Consolidate

Unaudited Condensed Consolidated Statements Of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Costs and Expenses	$ 362,904	$ 282,708	$ 700,522	$ 572,011
REVENUES	389,614	330,587	813,725	692,788
Cost of Revenue [Abstract]
Fuel Costs	99,918	52,840	204,060	137,571
Cost of Goods and Services Sold	46,620	41,748	94,505	66,331
OPERATING EXPENSES:
Utilities Operating Expense, Maintenance and Operations	139,543	116,381	250,556	220,330
Depreciation and amortization	66,266	62,994	132,286	126,083
Taxes other than income taxes	10,557	8,745	22,316	21,696
Operating Income (Loss)	26,710	47,879	113,203	120,777
Allowance for equity funds used during construction	1,686	1,331	3,374	2,705
Interest Expense	32,220	32,199	63,922	62,266
Other Nonoperating Income (Expense)	2,631	4,704	5,838	9,318
Nonoperating Income (Expense)	(27,903)	(26,164)	(54,710)	(50,243)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	(1,193)	21,715	58,493	70,534
Income Tax Expense (Benefit)	(241)	4,505	12,254	14,540
Net income	(952)	17,210	46,239	55,994
Less: Dividends on preferred stock	804	804	1,607	1,607
Net Income (Loss) Available to Common Stockholders, Basic	(1,756)	16,406	44,632	54,387
OPERATING INCOME	26,710	47,879	113,203	120,777
OTHER INCOME / (EXPENSE), NET:
Allowance for equity funds used during construction	1,686	1,331	3,374	2,705
Interest Expense	(32,220)	(32,199)	(63,922)	(62,266)
Other Nonoperating Income (Expense)	2,631	4,704	5,838	9,318
Total other expense, net	(27,903)	(26,164)	(54,710)	(50,243)
(LOSS) / INCOME FROM OPERATIONS BEFORE INCOME TAX
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	(1,193)	21,715	58,493	70,534
Income Tax Expense (Benefit)	(241)	4,505	12,254	14,540
NET (LOSS) / INCOME	(952)	17,210	46,239	55,994
Less: Dividends on preferred stock	804	804	1,607	1,607
NET (LOSS) / INCOME APPLICABLE TO COMMON STOCK	$ (1,756)	$ 16,406	$ 44,632	$ 54,387

Unaudited Condensed Consolida_2

Unaudited Condensed Consolidated Statements of Comprehensive Income Statement - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	$ (6,265)	$ 5,361	$ (11,418)	$ (4,294)
Net Income (Loss) Available to Common Stockholders, Basic	(1,756)	16,406	44,632	54,387
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	18,925	(17,143)	34,490	12,907
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	20,283	(15,767)	37,206	13,827
Other Comprehensive Income (Loss), Net of Tax	20,283	(15,767)	37,206	13,827
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	18,527	639	81,838	68,214
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	1,358	1,376	2,716	920
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax	$ (449)	$ (431)	$ (898)	$ (284)

Unaudited Condensed Consolida_3

Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
CURRENT ASSETS:
Cash and cash equivalents	$ 16,826	$ 6,912
Restricted Cash and Cash Equivalents	5	5
Accounts Receivable, after Allowance for Credit Loss, Current	185,808	179,136
Accounts Receivable, Allowance for Credit Loss, Current	579	647
Inventory, Net	116,449	101,899
Regulatory assets	153,273	63,813
Income Taxes Receivable, Current	17,613	15,566
Other Assets, Current	53,165	40,168
Total current assets	543,139	407,499
UTILITY PLANT:
Property, Plant and Equipment, Gross	6,809,827	6,643,929
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	2,982,464	2,895,881
Utility plant in service - net	3,827,363	3,748,048
Construction in Progress, Gross	256,770	210,297
Total net property, plant and equipment	4,084,133	3,958,345
Other Assets, Noncurrent [Abstract]
Intangible Assets, Net (Excluding Goodwill)	114,414	106,316
Regulatory assets	619,398	656,977
Other Assets, Miscellaneous, Noncurrent	66,089	61,448
Total other non-current assets	853,341	873,923
TOTAL ASSETS	5,480,613	5,239,767
CURRENT LIABILITIES:
Debt, Current	269,846	60,294
Accounts payable	209,257	179,834
Accrued taxes	24,086	25,898
Interest Payable, Current	30,951	30,634
Customer deposits	34,110	28,916
Regulatory Liability, Current	15,988	4,241
Accrued Liabilities and Other Liabilities	15,747	18,696
Total current liabilities	599,985	348,513
Long-term Debt and Lease Obligation	2,669,745	2,671,656
NON-CURRENT LIABILITIES:
Deferred income tax liabilities	302,339	290,727
Regulatory Liability, Noncurrent	822,259	826,709
Accrued other postretirement benefits	4,233	4,290
Asset retirement obligations	210,930	189,509
Derivative Liability, Noncurrent	3,473	49,382
Other non-current liabilities	1,303	4,597
Total non-current liabilities	4,014,282	4,036,870
Liabilities	4,614,267	4,385,383
Common shareholders' equity:
Additional Paid in Capital	823,321	848,565
Accumulated Other Comprehensive Income (Loss), Net of Tax	7,799	(29,407)
Accumulated deficit	(24,558)	(24,558)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	806,562	794,600
Cumulative preferred stock of subsidiary	59,784	59,784
Total common shareholders' equity	866,346	854,384
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 5,480,613	$ 5,239,767

Unaudited Condensed Consolida_4

Unaudited Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
CASH FLOWS FROM OPERATIONS:
Net income	$ 46,239	$ 55,994
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	132,286	126,083
Amortization of deferred financing costs and debt discounts	1,991	1,977
Deferred income taxes and investment tax credit adjustments - net	(6,799)	5,866
Allowance for equity funds used during construction	(3,374)	(2,705)
Change in certain assets and liabilities:
Accounts receivable	(6,672)	6,231
Inventories	(21,092)	9,900
Accounts payable	48,628	22,316
Accrued and other current liabilities	2,277	(3,934)
Accrued taxes payable/receivable	(3,859)	3,553
Accrued interest	317	52
Pension and other postretirement benefit assets and liabilities	(4,314)	(8,284)
Short-term and long-term regulatory assets and liabilities	(43,518)	(21,026)
Prepayments and other current assets	12,997	12,526
Other - net	1,356	(4,398)
Net cash provided by operating activities	130,469	179,099
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(228,840)	(132,305)
Project development costs	(976)	(624)
Cost of removal and regulatory recoverable ARO payments	(28,911)	(12,562)
Net cash used in investing activities	(258,727)	(145,491)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings under revolving credit facilities	210,000	100,000
Repayments under revolving credit facilities	(200,000)	(75,000)
Short-term borrowings	200,000	0
Distributions to shareholders	69,929	62,579
Preferred dividends of subsidiary	(1,607)	(1,607)
Deferred financing costs paid	(259)	(280)
Payments for financed capital expenditures	0	36
Other	(33)	(94)
Net cash provided by (used in) financing activities	138,172	(39,596)
Net change in cash, cash equivalents and restricted cash	9,914	(5,988)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	16,831	20,634
Cash paid during the period for:
Interest (net of amount capitalized)	57,920	59,195
Income Taxes Paid, Net	21,100	5,000
Non-cash investing activities:
Capital Expenditures Incurred but Not yet Paid	$ 61,912	$ 56,465

Unaudited Condensed Consolida_5

Unaudited Condensed Consolidated Statements of Common Stockholders' Equity ( Deficit) Statement - USD ($) $ in Thousands	Total	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Cumulative Preferred Stock Of Subsidiary [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 520,988	$ 588,966		$ (24,558)	$ 59,784
Other Comprehensive Income (Loss), Net of Tax	(15,767)
Net Income (Loss) Available to Common Stockholders, Basic	16,406
Dividends, Common Stock	(32,506)
Stock Issued During Period, Value, Other	16	16
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	639
Preferred Stock Dividends, Income Statement Impact	804
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	(804)
Payments of Ordinary Dividends, Common Stock	(24,314)
Other Comprehensive Income (Loss), Net of Tax	13,827
Net Income (Loss) Available to Common Stockholders, Basic	54,387
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	68,214
Preferred Stock Dividends, Income Statement Impact	1,607
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	(1,607)
Return of Capital		(8,200)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	558,531	589,007	$ (13,826)	(16,650)	59,784
Other Comprehensive Income (Loss), Net of Tax	(15,767)
Net Income (Loss) Available to Common Stockholders, Basic	16,406
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	639
Preferred Stock Dividends, Income Statement Impact	804
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	526,680	580,831	(29,593)	(24,558)	59,784
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	794,600	848,565		(24,558)	59,784
Other Comprehensive Income (Loss), Net of Tax	20,283
Net Income (Loss) Available to Common Stockholders, Basic	(1,756)
Dividends, Common Stock	(34,124)
Stock Issued During Period, Value, Other	27	27
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	18,527
Preferred Stock Dividends, Income Statement Impact	804
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	(804)
Return of Capital		(25,297)
Payments of Ordinary Dividends, Common Stock	(8,827)
Other Comprehensive Income (Loss), Net of Tax	37,206
Net Income (Loss) Available to Common Stockholders, Basic	44,632
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	81,838
Preferred Stock Dividends, Income Statement Impact	1,607
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	(1,607)
Return of Capital		(25,300)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	822,132	848,591	(12,484)	(13,975)	59,784
Other Comprehensive Income (Loss), Net of Tax	20,283
Net Income (Loss) Available to Common Stockholders, Basic	(1,756)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	18,527
Preferred Stock Dividends, Income Statement Impact	804
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 806,562	$ 823,321	$ 7,799	$ (24,558)	$ 59,784

Overview and Summary Of Signifi

Overview and Summary Of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2022
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]	1. OVERVIEW AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES IPALCO is a holding company incorporated under the laws of the state of Indiana. IPALCO is owned by AES U.S. Investments (82.35%) and CDPQ (17.65%). AES U.S. Investments is owned by AES U.S. Holdings, LLC (85%) and CDPQ (15%). IPALCO owns all of the outstanding common stock of IPL, which does business as AES Indiana. Substantially all of IPALCO’s business consists of generating, transmitting, distributing and selling of electric energy conducted through its principal subsidiary, AES Indiana. AES Indiana was incorporated under the laws of the state of Indiana in 1926. AES Indiana has approximately 517,000 retail customers in the city of Indianapolis and neighboring cities, towns and communities, and adjacent rural areas all within the state of Indiana, with the most distant point being approximately forty miles from Indianapolis. AES Indiana has an exclusive right to provide electric service to those customers. AES Indiana owns and operates four generating stations, all within the state of Indiana. AES Indiana’s largest generating station, Petersburg, is coal-fired, and AES Indiana retired 230 MW Petersburg Unit 1 on May 31, 2021 and has plans to retire 415 MW Petersburg Unit 2 in 2023, which would result in 630 MW of total retired economic capacity at this station. The second largest station, Harding Street, uses natural gas and fuel oil to power combustion turbines. In addition, AES Indiana operates a 20 MW battery energy storage unit at this location, which provides frequency response. The third station, Eagle Valley, is a CCGT natural gas plant. The fourth station, Georgetown, is a small peaking station that uses natural gas to power combustion turbines. As of June 30, 2022, AES Indiana’s net electric generation capacity for winter is 3,475 MW and net summer capacity is 3,330 MW. On December 17, 2021, AES Indiana, through its wholly-owned subsidiary AES Indiana Devco Holdings 1, LLC, completed the acquisition of Hardy Hills Solar Energy LLC, including the development of a 195 MW solar project (the "Hardy Hills Solar Project") expected to be completed in 2023. In July 2021, AES Indiana, through its wholly-owned subsidiary AES Indiana Devco Holdings 2, LLC, executed an agreement to acquire a 250 MW solar and 180 MWh energy storage facility (the "Petersburg Solar Project") expected to be completed in 2024. 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. All significant intercompany amounts have been eliminated in consolidation. Interim Financial Presentation The accompanying unaudited condensed consolidated financial statements and footnotes have been prepared in accordance with GAAP, as contained in the FASB ASC, for interim financial information and Article 10 of Regulation S-X issued by the SEC. Accordingly, they do not include all the information and footnotes required by GAAP for annual fiscal reporting periods. In the opinion of management, the interim financial information includes all adjustments of a normal recurring nature necessary for a fair presentation of the results of operations, financial position, comprehensive income, changes in equity, and cash flows. The results of operations for the three and six months ended June 30, 2022 are not necessarily indicative of expected results for the year ending December 31, 2022. The accompanying condensed consolidated financial statements are unaudited and should be read in conjunction with the 2021 audited consolidated financial statements and notes thereto, which are included in the 2021 Form 10-K. 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 revenues and expenses during the reporting period may also be affected by the estimates and assumptions that 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 revenues; 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 employee benefits. Cash, Cash Equivalents and Restricted Cash The following table provides a summary of 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: June 30, December 31, 2022 2021 (In Thousands) Cash, cash equivalents and restricted cash Cash and cash equivalents $ 16,826 $ 6,912 Restricted cash 5 5 Total cash, cash equivalents and restricted cash $ 16,831 $ 6,917 Accounts Receivable The following table summarizes our accounts receivable balances at June 30, 2022 and December 31, 2021: June 30, December 31, 2022 2021 (In Thousands) Accounts receivable, net Customer receivables $ 105,650 $ 100,952 Unbilled revenue 67,442 64,758 Amounts due from affiliates 370 169 Other 12,925 13,904 Allowance for credit losses (579) (647) Total accounts receivable, net $ 185,808 $ 179,136 The following table is a rollforward of our allowance for credit losses related to the accounts receivable balances for the six months ended June 30, 2022 and 2021, respectively: $ in Thousands Beginning Allowance Balance Current Period Provision Write-offs Charged Against Allowances Recoveries Collected Ending Allowance Balance 2022 $ 647 $ 2,492 $ (3,362) $ 802 $ 579 2021 $ 3,155 $ 1,030 $ (3,741) $ 1,109 $ 1,553 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, including the economic impacts of the COVID-19 pandemic on our receivable balance as of June 30, 2022. Amounts are written off when reasonable collections efforts have been exhausted. During the six months ended June 30, 2021, the current period provision and allowance for credit losses decreased due to lower past due customer receivable balances. Inventories The following table summarizes our inventories balances at June 30, 2022 and December 31, 2021: June 30, December 31, 2022 2021 (In Thousands) Inventories Fuel $ 51,681 $ 41,626 Materials and supplies, net 64,768 60,273 Total inventories $ 116,449 $ 101,899 ARO AES Indiana’s ARO relates 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 liability for the six months ended June 30, 2022 and 2021, respectively: For the Six Months Ended June 30, 2022 2021 (In Thousands) Balance as of January 1 $ 189,509 $ 195,236 Liabilities incurred 1,059 — Liabilities settled (5,961) (4,302) Revisions to cash flow and timing estimates 22,402 — Accretion expense 3,921 3,992 Balance as of June 30 $ 210,930 $ 194,926 AES Indiana recorded adjustments to its ARO liabilities of $22.4 million for the six months ended June 30, 2022, primarily to reflect increases to estimated ash pond closure costs. As of June 30, 2022 and December 31, 2021, AES Indiana did not have any assets that are legally restricted for settling its ARO liability. For further information on AES Indiana’s ARO, see Note 3, " Property, Plant and Equipment - ARO" to IPALCO’s 2021 Form 10-K. Accumulated Other Comprehensive Income / (Loss) The amounts reclassified out of AOCI / (AOCL) by component during the three months ended June 30, 2022 and 2021 are as follows (in Thousands): Details about AOCI / (AOCL) components Affected line item in the Condensed Consolidated Statements of Operations Three Months Ended June 30, Six Months Ended June 30, 2022 2021 2022 2021 Net losses on cash flow hedges (Note 4): Interest expense $ 1,807 $ 1,807 $ 3,614 $ 1,204 Income tax effect (449) (431) (898) (284) Total reclassifications for the period, net of income taxes $ 1,358 $ 1,376 $ 2,716 $ 920 See Note 4, " Derivative Instruments and Hedging Activities - Cash Flow Hedges " for further information on the changes in the components of AOCI / (AOCL). Operating Expenses – Other, Net Operating expenses – Other, net generally includes gains or losses on asset sales, dispositions or acquisitions, gains or losses on the sale or acquisition of businesses, and other expense or income from miscellaneous operating transactions. For the six months ended June 30, 2022, the $3.2 million is primarily due to a gain on remeasurement of contingent consideration associated with the Hardy Hills Solar Project acquisition. New Accounting Pronouncements Adopted in 2022 The following table provides a brief description of recent accounting pronouncements that had an impact on the Company's 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 the Company’s Financial Statements. ASU Number and Name Description Date of Adoption Effect on the Financial Statements upon adoption 2020-04 and 2021-01, Reference Rate Form (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting The amendments in these updates provide optional expedients and exceptions for applying GAAP to contracts, hedging relationships and other transactions that reference to LIBOR or another reference rate expected to be discontinued by reference rate reform, and clarify that certain optional expedients and exceptions in Topic 848 for contract modifications and hedge accounting apply to derivatives that are affected by the discounting transition. These amendments are effective for a limited period of time (March 12, 2020 - December 31, 2022). March 12, 2020 - December 31, 2022 The Company is implementing the reference rate reform and does not expect these amendments to have a material impact on the Financial Statements.

Regulatory Matters

Regulatory Matters	6 Months Ended
	Jun. 30, 2022
Regulated Operations [Abstract]
Regulatory Matters	2. REGULATORY MATTERS 2022 IRP Electric utilities in Indiana are required to submit Integrated Resource Plans (IRPs) every three years. The IRPs are subject to a rigorous stakeholder process. IRPs describe how the utility plans to deliver safe, reliable, and efficient electricity at just and reasonable rates. AES Indiana held public advisory meetings for the 2022 IRP in January, April and June of 2022. Changes to our generation portfolio are evaluated and decided through the IRP. The 2022 IRP is expected to be filed in the fourth quarter of 2022. AES Indiana issued an all-source Request for Proposal on April 14, 2022, in order to competitively procure replacement capacity; such need is being evaluated in AES Indiana's 2022 IRP. Excess Distributed Generation Rates On March 1, 2021, AES Indiana filed a petition with the IURC for approval of its proposed rate for the procurement of excess distributed generation ("EDG") and related consumer EDG credit issues. The EDG rate replaced the net metering program beginning in July 2022, when net metering was no longer available to new customers. The IURC approved the EDG rate by order dated January 26, 2022, On March 16, 2022, the IURC denied the petition for reconsideration filed by the other parties on February 15, 2022. The matter remains subject to the pending appeal filed by the other parties on February 22, 2022, which is currently being held in abeyance by the Indiana Court of Appeals pending resolution of a petition to transfer to the Indiana Supreme Court filed in a similar case involving a different and unaffiliated utility. The stay was extended by the Indiana Court of Appeals on July 11, 2022 and remains in effect. Deferred Fuel The Eagle Valley CCGT was on unplanned outage from late April 2021 until mid-March 2022, impacting several FAC periods. The FAC 133 IURC Order issued on November 24, 2021 approved the FAC 133 fuel cost factor on an interim basis subject to refund pending the outcome of a sub-docket created to examine the Eagle Valley CCGT extended outage. A procedural schedule for the sub-docket has been established by the IURC. AES Indiana filed testimony in the FAC sub-docket in May 2022 and the evidentiary hearing is scheduled to be held in October 2022. AES Indiana's subsequent FAC filings have included a reduced FAC factor requested by AES Indiana in order to mitigate the rate impact on customers, primarily caused by rising commodity pricing and the Eagle Valley extended outage, that deferred the collection of certain variances estimated to be due to the Eagle Valley unplanned outage until a future FAC filing or the resolution in the FAC sub-docket for the Eagle Valley outage. As such, certain FAC deferrals are recorded in long-term regulatory assets as the timing of collection is unknown. House Bill 1002 The 2022 Indiana General Assembly recently passed House Enrolled Act 1002, which includes language regarding the repeal of the Utility Receipts Tax ("URT"). AES Indiana filed a rate adjustment with the IURC on April 29, 2022, which was approved by the IURC on June 28, 2022. AES Indiana began charging the new rates excluding URT in July 2022.

Fair Value

Fair Value	6 Months Ended
	Jun. 30, 2022
Fair Value Disclosures [Abstract]
Fair Value Measurements	FAIR VALUE The fair value of current financial assets and liabilities approximate their reported carrying amounts. The estimated fair values of the Company’s assets and liabilities have been determined using available market information. Because these amounts are estimates and based on hypothetical transactions to sell assets or transfer liabilities, the use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts. For further information on our valuation techniques and policies, see Note 4, " Fair Value" to IPALCO’s 2021 Form 10-K. Financial Assets VEBA Assets IPALCO has VEBA investments that are to be used to fund certain employee postretirement health care benefit plans. These assets are primarily comprised of open-ended mutual funds, which are valued using the net assets value per unit. These investments are recorded at fair value within " Other non-current assets" on the accompanying Condensed Consolidated Balance Sheets and classified as equity securities. All changes to fair value on the VEBA investments are included in income in the period that the changes occur. These changes to fair value were not material for the periods covered by this report. Any unrealized gains or losses are recorded in " Other income / (expense), net" on the accompanying Condensed Consolidated Statements of Operations. FTRs In connection with AES Indiana’s participation in MISO, in the second quarter of each year AES Indiana is granted financial instruments that can be converted into cash or FTRs based on AES Indiana’s forecasted peak load for the period. FTRs are used in the MISO market to hedge AES Indiana’s exposure to congestion charges, which result from constraints on the transmission system. AES Indiana’s FTRs are valued at the cleared auction prices for FTRs in MISO’s annual auction. Because of the infrequent nature of this valuation, the fair value assigned to the FTRs is considered a Level 3 input under the fair value hierarchy required by ASC 820. An offsetting regulatory liability has been recorded as these revenues or costs will be flowed through to customers through the FAC. As such, there is no impact on our Condensed Consolidated Statements of Operations. Forward Power Contracts AES Indiana entered into forward purchase power contracts during the three and six months ended June 30, 2022 and 2021, respectively. As of June 30, 2022 and December 31, 2021, respectively, all outstanding forward power contracts had settled and there was no notional amount outstanding. All changes in the market value of the forward power contracts are recorded in the Consolidated Statements of Operations in the period in which the change occurred. See also Note 4, " Derivative Instruments and Hedging Activities - Derivatives Not Designated as Hedge" for further information. Financial Liabilities Interest Rate Hedges IPALCO's interest rate hedges have a combined notional amount of $400.0 million. All changes in the market value of the interest rate hedges are recorded in AOCI / (AOCL). See also Note 4, " Derivative Instruments and Hedging Activities - Cash Flow Hedges" for further information. Recurring Fair Value Measurements The fair value of assets and liabilities at June 30, 2022 and December 31, 2021 measured on a recurring basis and the respective category within the fair value hierarchy for IPALCO was determined as follows: Assets and Liabilities at Fair Value Level 1 Level 2 Level 3 Fair value at June 30, 2022 Based on quoted market prices in active markets Other observable inputs Unobservable inputs (In Thousands) Financial assets: VEBA investments: Money market funds $ 8 $ 8 $ — $ — Mutual funds 3,283 — 3,283 — Total VEBA investments 3,291 8 3,283 — FTRs 14,527 — — 14,527 Total financial assets measured at fair value $ 17,818 $ 8 $ 3,283 $ 14,527 Financial liabilities: Interest rate hedges $ 3,473 $ — $ 3,473 $ — Total financial liabilities measured at fair value $ 3,473 $ — $ 3,473 $ — Assets and Liabilities at Fair Value Level 1 Level 2 Level 3 Fair value at December 31, 2021 Based on quoted market prices in active markets Other observable inputs Unobservable inputs (In Thousands) Financial assets: VEBA investments: Money market funds $ 11 $ 11 $ — $ — Mutual funds 3,594 — 3,594 — Total VEBA investments 3,605 11 3,594 — FTRs 1,235 — — 1,235 Total financial assets measured at fair value $ 4,840 $ 11 $ 3,594 $ 1,235 Financial liabilities: Interest rate hedges $ 49,382 $ — $ 49,382 $ — Total financial liabilities measured at fair value $ 49,382 $ — $ 49,382 $ — Financial Instruments not Measured at Fair Value in the Condensed Consolidated Balance Sheets Debt The fair value of our outstanding fixed-rate debt has been determined on the basis of the quoted market prices of the specific securities issued and outstanding. In certain circumstances, the market for such securities was inactive and therefore the valuation was adjusted to consider changes in market spreads for similar securities. Accordingly, the purpose of this disclosure is not to approximate the value on the basis of how the debt might be refinanced. The following table shows the face value and the fair value of fixed-rate and variable-rate indebtedness (Level 2) for the periods ending: June 30, 2022 December 31, 2021 Face Value Fair Value Face Value Fair Value (In Thousands) Fixed-rate $ 2,683,800 $ 2,589,833 $ 2,683,800 $ 3,169,118 Variable-rate 270,000 270,000 60,000 60,000 Total indebtedness $ 2,953,800 $ 2,859,833 $ 2,743,800 $ 3,229,118 The difference between the face value and the carrying value of this indebtedness consists of the following: • unamortized deferred financing costs of $24.5 million and $25.2 million at June 30, 2022 and December 31, 2021, respectively; and • unamortized discounts of $6.3 million and $6.4 million at June 30, 2022 and December 31, 2021, respectively.

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities (Notes)	6 Months Ended
	Jun. 30, 2022
Derivative Instruments and Hedging Activities [Abstract]
Derivative Instruments and Hedging Activities Disclosure [Text Block]	DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES For further information on the Company’s derivative and hedge accounting policies, see Note 1, " Overview and Summary of Significant Accounting Policies - Financial Derivatives" and Note 5, " Derivative Instruments and Hedging Activities" to IPALCO’s 2021 Form 10-K. At June 30, 2022 , AES Indiana's o u tstanding derivative instruments were as follows: Commodity Accounting Treatment (a) Unit Purchases Sales Net Purchases/(Sales) Interest rate hedges Designated USD $ 400,000 $ — $ 400,000 FTRs Not Designated MWh 11,550 — 11,550 (a) Refers to whether the derivative instruments have been designated as a cash flow hedge. Cash Flow Hedges As part of our risk management processes, we identify the relationships between hedging instruments and hedged items, as well as the risk management objective and strategy for undertaking various hedge transactions. The fair values of cash flow hedges determined by current public market prices will continue to fluctuate with changes in market prices up to contract expiration. The following tables provide information on gains or losses recognized in AOCI / (AOCL) for the cash flow hedges for the periods indicated: Interest Rate Hedges for the Three Months Ended June 30, $ in thousands (net of tax) 2022 2021 Beginning accumulated derivative loss in AOCL $ (12,484) $ (13,826) Net gains / (losses) associated with current period hedging transactions 18,925 (17,143) Net losses reclassified to interest expense, net of tax 1,358 1,376 Ending accumulated derivative gain / (loss) in AOCI / (AOCL) $ 7,799 $ (29,593) Interest Rate Hedges for the Six Months Ended June 30, $ in thousands (net of tax) 2022 2021 Beginning accumulated derivative loss in AOCL $ (29,407) $ (43,420) Net gains associated with current period hedging transactions 34,490 12,907 Net losses reclassified to interest expense, net of tax 2,716 920 Ending accumulated derivative gain / (loss) in AOCI / (AOCL) $ 7,799 $ (29,593) Loss expected to be reclassified to earnings in the next twelve months $ (5,375) Maximum length of time that we are hedging our exposure to variability in future cash flows related to forecasted transactions (in months) 27 Derivatives Not Designated as Hedge AES Indiana's FTRs and forward power contracts do not qualify for hedge accounting or the normal purchases and sales exceptions under ASC 815. Accordingly, FTRs are recorded at fair value using the income approach when acquired and subsequently amortized over the annual period as they are used. The forward power contracts are recorded at fair value using the market approach with changes in the fair value charged or credited to the Consolidated Statements of Operations in the period in which the change occurred. This is commonly referred to as "MTM accounting". Realized gains and losses on the forward power contracts are included in future FAC filings, therefore any realized and unrealized gains and losses are deferred as regulatory liabilities or regulatory assets. There were realized gains of $1.3 million related to forward power contracts for the three and six months ended June 30, 2022. For the three and six months ended June 30, 2021, there were unrealized gains of $2.7 million and realized gains of $0.8 million related to the forward power contracts. The net gains resulting from these contracts have been deferred and included with deferred fuel costs in " Regulatory assets, non-current " on the accompanying Condensed Consolidated Balance Sheets. Certain qualifying derivative instruments have been designated as normal purchases or normal sales contracts, as provided under GAAP. Derivative contracts that have been designated as normal purchases or normal sales under GAAP are not subject to hedge or mark to market accounting and are recognized in the consolidated statements of operations on an accrual basis. When applicable, IPALCO has elected not to offset derivative assets and liabilities and not to offset net derivative positions against the right to reclaim cash collateral pledged (an asset) or the obligation to return cash collateral received (a liability) under derivative agreements. As of June 30, 2022 and December 31, 2021, IPALCO did not have any offsetting positions. The following table summarizes the fair value, balance sheet classification and hedging designation of IPALCO's derivative instruments (in thousands): Commodity Hedging Designation Balance sheet classification June 30, 2022 December 31, 2021 FTRs Not a Cash Flow Hedge Prepayments and other current assets $ 14,527 $ 1,235 Interest rate hedges Cash Flow Hedge Derivative liabilities, non-current $ 3,473 $ 49,382

Debt

Debt	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Indebtedness	DEBT Long-Term Debt The following table presents our long-term debt: June 30, December 31, Series Due 2022 2021 (In Thousands) AES Indiana first mortgage bonds: 3.125% (1) December 2024 $ 40,000 $ 40,000 0.65% (1) August 2025 40,000 40,000 0.75% (2) April 2026 30,000 30,000 0.95% (2) April 2026 60,000 60,000 1.40% (1) August 2029 55,000 55,000 6.60% January 2034 100,000 100,000 6.05% October 2036 158,800 158,800 6.60% June 2037 165,000 165,000 4.875% November 2041 140,000 140,000 4.65% June 2043 170,000 170,000 4.50% June 2044 130,000 130,000 4.70% September 2045 260,000 260,000 4.05% May 2046 350,000 350,000 4.875% November 2048 105,000 105,000 Unamortized discount – net (5,776) (5,855) Deferred financing costs (17,411) (17,913) Total AES Indiana first mortgage bonds 1,780,613 1,780,032 Total Long-term Debt – AES Indiana 1,780,613 1,780,032 Long-term Debt – IPALCO Enterprises, Inc.: 3.70% Senior Secured Notes September 2024 405,000 405,000 4.25% Senior Secured Notes May 2030 475,000 475,000 Unamortized discount – net (476) (527) Deferred financing costs (6,655) (7,319) Total Long-term Debt – IPALCO Enterprises, Inc. 872,869 872,154 Total Consolidated IPALCO Long-term Debt 2,653,482 2,652,186 Less: Current Portion of Long-term Debt — — Net Consolidated IPALCO Long-term Debt $ 2,653,482 $ 2,652,186 (1) First mortgage bonds issued to the Indiana Finance Authority, to secure the loan of proceeds from tax-exempt bonds issued by the Indiana Finance Authority. (2) First mortgage bonds issued to the Indiana Finance Authority, to secure the loan of proceeds from tax-exempt bonds issued by the Indiana Finance Authority. The notes have a final maturity date of December 31, 2038, but are subject to a mandatory put in April 2026. Significant Transactions AES Indiana Term Loan In June 2022, AES Indiana entered into an unsecured $200.0 million 364-day Term Loan Agreement. The Term Loan Agreement was fully drawn at closing with the proceeds being used for general corporate purposes. This agreement matures on June 22, 2023, and bears interest at variable rates as described in the Term Loan Agreement. The Term Loan Agreement contains customary representations, warranties and covenants, including a leverage covenant consistent with the leverage covenant contained in AES Indiana's Credit Agreement. AES Indiana has classified this Term Loan Agreement as short-term indebtedness as it matures June 2023. Management plans to refinance this Term Loan Agreement with new debt. In the event that we are unable to refinance this Term Loan Agreement on acceptable terms, AES Indiana anticipates it will have available borrowing capacity on its revolving credit facility that could be used to satisfy the obligation. AES Indiana First Mortgage Bonds and Recent Indiana Finance Authority Bond Issuances In July 2021, the Indiana Finance Authority issued at the request of AES Indiana an aggregate principal amount of $95 million of Environmental Facilities Refunding Revenue Bonds, Series 2021A&B. AES Indiana issued $95 million aggregate principal amount of first mortgage bonds to the Indiana Finance Authority in two series: $55 million Series 2021A bonds at an interest rate of 1.40% due August 1, 2029 and $40 million Series 2021B notes at an interest rate of 0.65% due August 1, 2025 to secure the loan of proceeds from these bonds issued by the Indiana Finance Authority. Proceeds of the bond offering were used to refund $95 million of Indiana Finance Authority Environmental Facilities Refunding Revenue Bonds Series 2011A&B at a redemption price of 100% of par. IPALCO’s Senior Secured Notes Pursuant to a registration rights agreement dated April 14, 2020, IPALCO agreed to register the 2030 IPALCO Notes under the Securities Act by filing an exchange offer registration statement or, under specified circumstances, a shelf registration statement with the SEC. IPALCO filed a registration statement on Form S-4 with respect to the 2030 IPALCO Notes with the SEC on March 22, 2021 in respect of its obligations under such registration rights agreement, and this registration statement was declared effective on April 7, 2021. The exchange offer closed on May 11, 2021. Line of Credit

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2022
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES Effective Tax Rate IPALCO's provision for income taxes is based on the estimated annual effective tax rate, plus discrete items. The effective combined state and federal income tax rates were 20.2% and 20.9% for the three and six months ended June 30, 2022, respectively, as compared to 20.7% and 20.6% for the three and six months ended June 30, 2021, respectively. The year-to-date rate is different from the combined federal and state statutory rate of 24.9% primarily due to the flowthrough of the net tax benefit related to the reversal of excess deferred taxes of AES Indiana, which was partially offset by the net tax expense related to the amortization of allowance for equity funds used during construction.

Benefit Plans

Benefit Plans	6 Months Ended
	Jun. 30, 2022
Retirement Benefits [Abstract]
Benefit Plans	BENEFIT PLANS The following table presents net periodic benefit (credit) / cost information relating to the Pension Plans combined: For the Three Months Ended For the Six Months Ended June 30, June 30, 2022 2021 2022 2021 (In Thousands) (In Thousands) Components of net periodic benefit (credit) / cost: Service cost $ 2,239 $ 2,335 $ 4,476 $ 4,669 Interest cost 4,525 3,915 9,040 7,830 Expected return on plan assets (8,914) (10,454) (17,833) (20,908) Amortization of prior service cost 648 736 1,295 1,472 Amortization of actuarial loss 605 1,382 1,212 2,764 Net periodic benefit (credit) / cost $ (897) $ (2,086) $ (1,810) $ (4,173) The components of net periodic benefit (credit) / cost other than service cost are included in "Other income, net" in the Condensed Consolidated Statements of Operations. In addition, AES Indiana provides postretirement health care benefits to certain active or retired employees and the spouses of certain active or retired employees. These postretirement health care benefits and the related unfunded obligation of $4.0 million and $3.9 million at June 30, 2022 and December 31, 2021, respectively, were not material to the Financial Statements in the periods covered by this report.

Commitments And Contingencies

Commitments And Contingencies	6 Months Ended
	Jun. 30, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments And Contingencies	COMMITMENTS AND CONTINGENCIES Guarantees We and certain of our subsidiaries enter into agreements from time to time providing financial or performance assurance to third parties for certain of our subsidiaries as part of our business, including guarantees and stand-by letters of credit. These agreements are entered into primarily to support or enhance the creditworthiness otherwise attributed to the subsidiary on a stand-alone basis, thereby facilitating the extension of sufficient credit to accomplish the subsidiary's intended commercial purposes. At June 30, 2022 and December 31, 2021, AES Indiana had issued $280.8 million and $226.2 million of guarantees, respectively, and no stand-by letters of credit. Legal Matters IPALCO and AES Indiana are involved in litigation arising in the normal course of business. We accrue for litigation and claims when it is probable that a liability has been incurred and the amount of loss can be reasonably estimated. As of June 30, 2022 and December 31, 2021, total legal loss contingencies accrued were $0.0 million and $0.2 million, respectively, which primarily related to personal injury litigation. The legal loss contingencies and settlement related accruals are included in " Other Non-Current Liabilities" on the accompanying Condensed Consolidated Balance Sheets. We maintain an amount of insurance protection for such litigation that we believe is adequate. As of June 30, 2022 and December 31, 2021, we have $0.7 million and $12.5 million, respectively, of receivables for insurance recoveries determined to be probable recorded in "Prepayments and other current assets" on the accompanying Condensed Consolidated Balance Sheets. While the ultimate outcome of outstanding litigation cannot be predicted with certainty, management believes that final outcomes will not have a material adverse effect on IPALCO’s results of operations, financial condition and cash flows. Environmental Matters We are subject to various federal, state, regional and local environmental protection and health and safety laws and regulations governing, among other things, the generation, storage, handling, use, disposal and transportation of regulated materials, including ash; the use and discharge of water used in generation boilers and for cooling purposes; the emission and discharge of hazardous and other materials, including GHGs, into the environment; climate change; and the health and safety of our employees. These laws and regulations often require a lengthy and complex process of obtaining and renewing permits and other governmental authorizations from federal, state and local agencies. Violation of these laws, regulations or permits can result in substantial fines, other sanctions, permit revocation and/or facility shutdowns. We cannot assure that we have been or will be at all times in full compliance with such laws, regulations and permits. New Source Review and Other CAA NOVs In October 2009, AES Indiana received a NOV and Finding of Violation from the EPA pursuant to the CAA Section 113(a). The NOV alleged violations of the CAA at AES Indiana’s three primarily coal-fired electric generating facilities at the time, dating back to 1986. The alleged violations primarily pertain to the PSD and non-attainment New Source Review (NSR) requirements under the CAA. In addition, on October 1, 2015, AES Indiana received a NOV from the EPA pursuant to CAA Section 113(a) alleging violations of the CAA, the Indiana SIP, and the Title V operating permit related to alleged particulate matter and opacity violations at AES Indiana Petersburg Unit 3. Also, on February 5, 2016, the EPA issued a NOV pursuant to CAA Section 113(a) alleging violations of PSD, non-attainment NSR and other CAA regulations, the Indiana SIP, and the Title V operating permit at Petersburg Generating Station. On August 31, 2020, AES Indiana reached a settlement with the EPA, the DOJ and IDEM resolving the purported violations of the CAA with respect to the coal-fired generation units at AES Indiana's Petersburg location. The settlement agreement, in the form of a proposed judicial consent decree, was approved and entered by the U.S. District Court for the Southern District of Indiana on March 23, 2021, and includes, among other items, the following requirements: annual caps on NO x and SO 2 emissions and more stringent emissions limits than AES Indiana's current Title V air permit; payment of civil penalties totaling $1.525 million (the payment of which was satisfied by AES Indiana in April 2021); a $5 million environmental mitigation project consisting of the construction and operation of a new, non-emitting source of generation at the site; expenditure of $0.325 million on a state-only environmentally beneficial project to preserve local, ecologically-significant lands; and retirement of Units 1 and 2 prior to July 1, 2023. If AES Indiana does not meet this retirement obligation, it must install a Selective Non-Catalytic Reduction System (SNCR) on Unit 4. AES Indiana previously had a contingent liability recorded related to these New Source Review and other CAA NOV matters. Coal Ash Insurance Litigation

Business Segment Information (N

Business Segment Information (Notes)	6 Months Ended
	Jun. 30, 2022
Segment Reporting Information [Line Items]
Segment Reporting Disclosure [Text Block]	BUSINESS SEGMENT INFORMATIONOperating segments are components of an enterprise that engage in business activities from which it may earn revenues and incur expenses, for which separate financial information is available, and is evaluated regularly by the chief operating decision maker in assessing performance and deciding how to allocate resources. Substantially all of our business consists of the generation, transmission, distribution and sale of electric energy conducted through AES Indiana, which is a vertically integrated electric utility. IPALCO’s reportable business segment is its utility segment, with all other nonutility business activities aggregated separately. The “All Other” nonutility category primarily includes the 2024 IPALCO Notes and 2030 IPALCO Notes and related interest expense, balance associated with IPALCO's interest rate hedges, cash and other immaterial balances. The accounting policies of the identified segment are consistent with those policies and procedures described in the summary of significant accounting policies. The following table provides information about IPALCO’s business segments (in thousands): Three Months Ended Three Months Ended June 30, 2022 June 30, 2021 Utility All Other Total Utility All Other Total Revenues $ 389,614 $ — $ 389,614 $ 330,587 $ — $ 330,587 Depreciation and amortization $ 66,266 $ — $ 66,266 $ 62,994 $ — $ 62,994 Interest expense $ 21,262 $ 10,958 $ 32,220 $ 21,255 $ 10,944 $ 32,199 Earnings/(loss) from operations before income tax $ 10,008 $ (11,201) $ (1,193) $ 32,587 $ (10,872) $ 21,715 Six Months Ended Six Months Ended June 30, 2022 June 30, 2021 Utility All Other Total Utility All Other Total Revenues $ 813,725 $ — $ 813,725 $ 692,788 $ — $ 692,788 Depreciation and amortization $ 132,286 $ — $ 132,286 $ 126,083 $ — $ 126,083 Interest expense $ 42,006 $ 21,916 $ 63,922 $ 42,776 $ 19,490 $ 62,266 Earnings/(loss) from operations before income tax $ 80,748 $ (22,255) $ 58,493 $ 89,882 $ (19,348) $ 70,534 As of June 30, 2022 As of December 31, 2021 Utility All Other Total Utility All Other Total Total assets $ 5,465,375 $ 15,238 $ 5,480,613 $ 5,222,987 $ 16,780 $ 5,239,767

Revenue (Notes)

Revenue (Notes)	6 Months Ended
	Jun. 30, 2022
Revenue from External Customer [Line Items]
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. Please see Note 13, “Revenue” to IPALCO’s 2021 Form 10-K for further discussion of our retail, wholesale and miscellaneous revenues. AES Indiana’s revenue from contracts with customers was $382.6 million and $318.5 million for the three months ended June 30, 2022 and 2021, respectively, and $799.2 million and $672.2 million for the six months ended June 30, 2022 and 2021, respectively. The following tables present our revenue from contracts with customers and other revenue (in thousands): For the Three Months Ended June 30, 2022 2021 Retail Revenues Retail revenue from contracts with customers: Residential $ 144,476 $ 129,254 Small commercial and industrial 56,944 48,208 Large commercial and industrial 149,741 127,009 Public lighting 2,351 2,270 Other (1) 4,260 4,175 Total retail revenue from contracts with customers 357,772 310,916 Alternative revenue programs 6,470 11,710 Wholesale Revenues Wholesale revenues from contracts with customers: 21,476 4,918 Miscellaneous Revenues Transmission and other revenue from contracts with customers 3,333 2,692 Other miscellaneous revenues (2) 563 351 Total Revenues $ 389,614 $ 330,587 (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 revenues not accounted for under ASC 606 For the Six Months Ended June 30, 2022 2021 Retail Revenues Retail revenue from contracts with customers: Residential $ 338,892 $ 289,757 Small commercial and industrial 120,592 102,725 Large commercial and industrial 287,946 240,449 Public lighting 4,752 4,456 Other (1) 8,785 8,366 Total retail revenue from contracts with customers 760,967 645,753 Alternative revenue programs 12,924 19,305 Wholesale Revenues Wholesale revenues from contracts with customers: 33,317 21,027 Miscellaneous Revenues Transmission and other revenue from contracts with customers 4,948 5,373 Other miscellaneous revenues (2) 1,569 1,330 Total Revenues $ 813,725 $ 692,788 (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 revenues not accounted for under ASC 606 The balances of receivables from contracts with customers were $173.5 million and $163.0 million as of June 30, 2022 and December 31, 2021, respectively. Payment terms for all receivables from contracts with customers typically do not extend beyond 30 days, though as a result of COVID-19, AES Indiana began offering expanded payment arrangements for customers. Contract Balances — The timing of revenue recognition, billings, and cash collections results in accounts receivable and contract liabilities. The contract liabilities from contracts with customers were $0.0 million and $0.0 million as of June 30, 2022 and December 31, 2021, respectively. During the three months ended June 30, 2022 and 2021, we recognized revenue of $0.0 million and $0.2 million related to this contract liability balance, respectively. During the six months ended June 30, 2022 and 2021, we recognized revenue of $0.0 million and $0.5 million related to this contract liability balance, respectively.

Leases (Notes)

Leases (Notes)	6 Months Ended
	Jun. 30, 2022
Leases [Abstract]
Lessor, Leases [Policy Text Block]	LEASES Lessee The following table summarizes the components of lease expense recognized in " Operating Costs and Expenses " on the accompanying Condensed Consolidated Statements of Operations for the three and six months ended June 30, 2022 and 2021, respectively (in thousands): For the Three Months Ended June 30, For the Six Months Ended June 30, Components of Lease Cost 2022 2021 2022 2021 Finance lease cost: Amortization of right- of-use assets $ 130 $ — $ 281 $ — Interest on lease liabilities 188 — 403 — Total lease cost $ 318 $ — $ 684 $ — Operating cash outflows from finance leases were $0.3 million for the three and six months ended June 30, 2022. Lessor The Company is the lessor under operating leases for land, office space and operating equipment. Minimum lease payments from such contracts are recognized as operating lease revenue on a straight-line basis over the lease term whereas contingent rentals are recognized when earned. Lease revenue included in the Condensed Consolidated Statements of Operations was $0.3 million and $0.3 million for the three months ended June 30, 2022 and 2021, respectively, and was $0.6 million and $0.6 million for the six months ended June 30, 2022 and 2021, respectively. Underlying gross assets and accumulated depreciation of operating leases included in Total net property, plant and equipment on the Condensed Consolidated Balance Sheets were $4.4 million and $1.0 million, respectively, as of June 30, 2022 and December 31, 2021. The option to extend or terminate a lease is based on customary early termination provisions in the contract. The Company has not recognized any early terminations as of June 30, 2022. The following table shows the future minimum lease receipts as of June 30, 2022 for the remainder of 2022 through 2026 and thereafter (in thousands): Operating Leases 2022 $ 488 2023 906 2024 786 2025 553 2026 554 Thereafter 1,559 Total $ 4,846

Risks and Uncertainties (Notes)

Risks and Uncertainties (Notes)	6 Months Ended
	Jun. 30, 2022
Risks and Uncertainties [Abstract]
Risks and Uncertainties	RISKS AND UNCERTAINTIES COVID-19 Pandemic The COVID-19 pandemic has impacted global economic activity, including electricity and energy consumption, and caused significant volatility in financial markets. Social distancing measures designed to slow the spread of the virus, such as business closures and operations limitations, impact energy demand within our service territory. We

Overview and Summary Of Signi_2

Overview and Summary Of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2022
Accounting Policies [Abstract]
Receivable [Policy Text Block]	Accounts Receivable The following table summarizes our accounts receivable balances at June 30, 2022 and December 31, 2021: June 30, December 31, 2022 2021 (In Thousands) Accounts receivable, net Customer receivables $ 105,650 $ 100,952 Unbilled revenue 67,442 64,758 Amounts due from affiliates 370 169 Other 12,925 13,904 Allowance for credit losses (579) (647) Total accounts receivable, net $ 185,808 $ 179,136
Inventory, Policy [Policy Text Block]	The following table is a rollforward of our allowance for credit losses related to the accounts receivable balances for the six months ended June 30, 2022 and 2021, respectively: $ in Thousands Beginning Allowance Balance Current Period Provision Write-offs Charged Against Allowances Recoveries Collected Ending Allowance Balance 2022 $ 647 $ 2,492 $ (3,362) $ 802 $ 579 2021 $ 3,155 $ 1,030 $ (3,741) $ 1,109 $ 1,553 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, including the economic impacts of the COVID-19 pandemic on our receivable balance as of June 30, 2022. Amounts are written off when reasonable collections efforts have been exhausted. During the six months ended June 30, 2021, the current period provision and allowance for credit losses decreased due to lower past due customer receivable balances. Inventories The following table summarizes our inventories balances at June 30, 2022 and December 31, 2021: June 30, December 31, 2022 2021 (In Thousands) Inventories Fuel $ 51,681 $ 41,626 Materials and supplies, net 64,768 60,273 Total inventories $ 116,449 $ 101,899
Schedule of Asset Retirement Obligations [Table Text Block]	The following is a roll forward of the ARO legal liability for the six months ended June 30, 2022 and 2021, respectively: For the Six Months Ended June 30, 2022 2021 (In Thousands) Balance as of January 1 $ 189,509 $ 195,236 Liabilities incurred 1,059 — Liabilities settled (5,961) (4,302) Revisions to cash flow and timing estimates 22,402 — Accretion expense 3,921 3,992 Balance as of June 30 $ 210,930 $ 194,926
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. All significant intercompany amounts have been eliminated in consolidation. Interim Financial Presentation
Use Of Management Estimates	Use of Management Estimates
Reclassifications	.
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 on the Condensed Consolidated Balance Sheets that reconcile to the total of such amounts as shown on the Condensed Consolidated Statements of Cash Flows: June 30, December 31, 2022 2021 (In Thousands) Cash, cash equivalents and restricted cash Cash and cash equivalents $ 16,826 $ 6,912 Restricted cash 5 5 Total cash, cash equivalents and restricted cash $ 16,831 $ 6,917
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 six months ended June 30, 2022 and 2021, respectively: $ in Thousands Beginning Allowance Balance Current Period Provision Write-offs Charged Against Allowances Recoveries Collected Ending Allowance Balance 2022 $ 647 $ 2,492 $ (3,362) $ 802 $ 579 2021 $ 3,155 $ 1,030 $ (3,741) $ 1,109 $ 1,553 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, including the economic impacts of the COVID-19 pandemic on our receivable balance as of June 30, 2022. Amounts are written off when reasonable collections efforts have been exhausted. During the six months ended June 30, 2021, the current period provision and allowance for credit losses decreased due to lower past due customer receivable balances.

Leases, Codification Topic 842

Leases, Codification Topic 842 (Policies)	6 Months Ended
	Jun. 30, 2022
Leases [Abstract]
Lessor, Leases [Policy Text Block]	LEASES Lessee The following table summarizes the components of lease expense recognized in " Operating Costs and Expenses " on the accompanying Condensed Consolidated Statements of Operations for the three and six months ended June 30, 2022 and 2021, respectively (in thousands): For the Three Months Ended June 30, For the Six Months Ended June 30, Components of Lease Cost 2022 2021 2022 2021 Finance lease cost: Amortization of right- of-use assets $ 130 $ — $ 281 $ — Interest on lease liabilities 188 — 403 — Total lease cost $ 318 $ — $ 684 $ — Operating cash outflows from finance leases were $0.3 million for the three and six months ended June 30, 2022. Lessor The Company is the lessor under operating leases for land, office space and operating equipment. Minimum lease payments from such contracts are recognized as operating lease revenue on a straight-line basis over the lease term whereas contingent rentals are recognized when earned. Lease revenue included in the Condensed Consolidated Statements of Operations was $0.3 million and $0.3 million for the three months ended June 30, 2022 and 2021, respectively, and was $0.6 million and $0.6 million for the six months ended June 30, 2022 and 2021, respectively. Underlying gross assets and accumulated depreciation of operating leases included in Total net property, plant and equipment on the Condensed Consolidated Balance Sheets were $4.4 million and $1.0 million, respectively, as of June 30, 2022 and December 31, 2021. The option to extend or terminate a lease is based on customary early termination provisions in the contract. The Company has not recognized any early terminations as of June 30, 2022. The following table shows the future minimum lease receipts as of June 30, 2022 for the remainder of 2022 through 2026 and thereafter (in thousands): Operating Leases 2022 $ 488 2023 906 2024 786 2025 553 2026 554 Thereafter 1,559 Total $ 4,846

Overview and Summary Of Signi_3

Overview and Summary Of Significant Accounting Policies (Tables)	6 Months Ended
	Jun. 30, 2022
Accounting Policies [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]	The following table summarizes our accounts receivable balances at June 30, 2022 and December 31, 2021: June 30, December 31, 2022 2021 (In Thousands) Accounts receivable, net Customer receivables $ 105,650 $ 100,952 Unbilled revenue 67,442 64,758 Amounts due from affiliates 370 169 Other 12,925 13,904 Allowance for credit losses (579) (647) Total accounts receivable, net $ 185,808 $ 179,136
Allowance for Credit Losses [Table Text Block]	The following table is a rollforward of our allowance for credit losses related to the accounts receivable balances for the six months ended June 30, 2022 and 2021, respectively: $ in Thousands Beginning Allowance Balance Current Period Provision Write-offs Charged Against Allowances Recoveries Collected Ending Allowance Balance 2022 $ 647 $ 2,492 $ (3,362) $ 802 $ 579 2021 $ 3,155 $ 1,030 $ (3,741) $ 1,109 $ 1,553
Schedule of Inventory, Current [Table Text Block]	The following table summarizes our inventories balances at June 30, 2022 and December 31, 2021: June 30, December 31, 2022 2021 (In Thousands) Inventories Fuel $ 51,681 $ 41,626 Materials and supplies, net 64,768 60,273 Total inventories $ 116,449 $ 101,899
Schedule of Cash and Cash Equivalents [Table Text Block]	The following table provides a summary of 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: June 30, December 31, 2022 2021 (In Thousands) Cash, cash equivalents and restricted cash Cash and cash equivalents $ 16,826 $ 6,912 Restricted cash 5 5 Total cash, cash equivalents and restricted cash $ 16,831 $ 6,917
Reclassification out of Accumulated Other Comprehensive Income	The amounts reclassified out of AOCI / (AOCL) by component during the three months ended June 30, 2022 and 2021 are as follows (in Thousands): Details about AOCI / (AOCL) components Affected line item in the Condensed Consolidated Statements of Operations Three Months Ended June 30, Six Months Ended June 30, 2022 2021 2022 2021 Net losses on cash flow hedges (Note 4): Interest expense $ 1,807 $ 1,807 $ 3,614 $ 1,204 Income tax effect (449) (431) (898) (284) Total reclassifications for the period, net of income taxes $ 1,358 $ 1,376 $ 2,716 $ 920
Schedule of Asset Retirement Obligations [Table Text Block]	The following is a roll forward of the ARO legal liability for the six months ended June 30, 2022 and 2021, respectively: For the Six Months Ended June 30, 2022 2021 (In Thousands) Balance as of January 1 $ 189,509 $ 195,236 Liabilities incurred 1,059 — Liabilities settled (5,961) (4,302) Revisions to cash flow and timing estimates 22,402 — Accretion expense 3,921 3,992 Balance as of June 30 $ 210,930 $ 194,926

Fair Value (Tables)

Fair Value (Tables)	6 Months Ended
	Jun. 30, 2022
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	The fair value of assets and liabilities at June 30, 2022 and December 31, 2021 measured on a recurring basis and the respective category within the fair value hierarchy for IPALCO was determined as follows: Assets and Liabilities at Fair Value Level 1 Level 2 Level 3 Fair value at June 30, 2022 Based on quoted market prices in active markets Other observable inputs Unobservable inputs (In Thousands) Financial assets: VEBA investments: Money market funds $ 8 $ 8 $ — $ — Mutual funds 3,283 — 3,283 — Total VEBA investments 3,291 8 3,283 — FTRs 14,527 — — 14,527 Total financial assets measured at fair value $ 17,818 $ 8 $ 3,283 $ 14,527 Financial liabilities: Interest rate hedges $ 3,473 $ — $ 3,473 $ — Total financial liabilities measured at fair value $ 3,473 $ — $ 3,473 $ — Assets and Liabilities at Fair Value Level 1 Level 2 Level 3 Fair value at December 31, 2021 Based on quoted market prices in active markets Other observable inputs Unobservable inputs (In Thousands) Financial assets: VEBA investments: Money market funds $ 11 $ 11 $ — $ — Mutual funds 3,594 — 3,594 — Total VEBA investments 3,605 11 3,594 — FTRs 1,235 — — 1,235 Total financial assets measured at fair value $ 4,840 $ 11 $ 3,594 $ 1,235 Financial liabilities: Interest rate hedges $ 49,382 $ — $ 49,382 $ — Total financial liabilities measured at fair value $ 49,382 $ — $ 49,382 $ —
Schedule Of Face And Fair Value Of Debt	The following table shows the face value and the fair value of fixed-rate and variable-rate indebtedness (Level 2) for the periods ending: June 30, 2022 December 31, 2021 Face Value Fair Value Face Value Fair Value (In Thousands) Fixed-rate $ 2,683,800 $ 2,589,833 $ 2,683,800 $ 3,169,118 Variable-rate 270,000 270,000 60,000 60,000 Total indebtedness $ 2,953,800 $ 2,859,833 $ 2,743,800 $ 3,229,118

Derivative Instruments and He_2

Derivative Instruments and Hedging Activities (Tables)	6 Months Ended
	Jun. 30, 2022
Derivative Instruments and Hedging Activities [Abstract]
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]	The following tables provide information on gains or losses recognized in AOCI / (AOCL) for the cash flow hedges for the periods indicated: Interest Rate Hedges for the Three Months Ended June 30, $ in thousands (net of tax) 2022 2021 Beginning accumulated derivative loss in AOCL $ (12,484) $ (13,826) Net gains / (losses) associated with current period hedging transactions 18,925 (17,143) Net losses reclassified to interest expense, net of tax 1,358 1,376 Ending accumulated derivative gain / (loss) in AOCI / (AOCL) $ 7,799 $ (29,593)
Schedule of Derivative Instruments [Table Text Block]	At June 30, 2022 , AES Indiana's o u tstanding derivative instruments were as follows: Commodity Accounting Treatment (a) Unit Purchases Sales Net Purchases/(Sales) Interest rate hedges Designated USD $ 400,000 $ — $ 400,000 FTRs Not Designated MWh 11,550 — 11,550 (a) Refers to whether the derivative instruments have been designated as a cash flow hedge.

Debt (Tables)

Debt (Tables)	6 Months Ended
	Jun. 30, 2022
Debt Disclosure [Abstract]
Schedule Long-Term Indebtedness	The following table presents our long-term debt: June 30, December 31, Series Due 2022 2021 (In Thousands) AES Indiana first mortgage bonds: 3.125% (1) December 2024 $ 40,000 $ 40,000 0.65% (1) August 2025 40,000 40,000 0.75% (2) April 2026 30,000 30,000 0.95% (2) April 2026 60,000 60,000 1.40% (1) August 2029 55,000 55,000 6.60% January 2034 100,000 100,000 6.05% October 2036 158,800 158,800 6.60% June 2037 165,000 165,000 4.875% November 2041 140,000 140,000 4.65% June 2043 170,000 170,000 4.50% June 2044 130,000 130,000 4.70% September 2045 260,000 260,000 4.05% May 2046 350,000 350,000 4.875% November 2048 105,000 105,000 Unamortized discount – net (5,776) (5,855) Deferred financing costs (17,411) (17,913) Total AES Indiana first mortgage bonds 1,780,613 1,780,032 Total Long-term Debt – AES Indiana 1,780,613 1,780,032 Long-term Debt – IPALCO Enterprises, Inc.: 3.70% Senior Secured Notes September 2024 405,000 405,000 4.25% Senior Secured Notes May 2030 475,000 475,000 Unamortized discount – net (476) (527) Deferred financing costs (6,655) (7,319) Total Long-term Debt – IPALCO Enterprises, Inc. 872,869 872,154 Total Consolidated IPALCO Long-term Debt 2,653,482 2,652,186 Less: Current Portion of Long-term Debt — — Net Consolidated IPALCO Long-term Debt $ 2,653,482 $ 2,652,186 (1) First mortgage bonds issued to the Indiana Finance Authority, to secure the loan of proceeds from tax-exempt bonds issued by the Indiana Finance Authority. (2) First mortgage bonds issued to the Indiana Finance Authority, to secure the loan of proceeds from tax-exempt bonds issued by the Indiana Finance Authority. The notes have a final maturity date of December 31, 2038, but are subject to a mandatory put in April 2026.

Benefit Plans (Tables)

Benefit Plans (Tables)	6 Months Ended
	Jun. 30, 2022
Retirement Benefits [Abstract]
Schedule Of Net Periodic Benefit Costs	The following table presents net periodic benefit (credit) / cost information relating to the Pension Plans combined: For the Three Months Ended For the Six Months Ended June 30, June 30, 2022 2021 2022 2021 (In Thousands) (In Thousands) Components of net periodic benefit (credit) / cost: Service cost $ 2,239 $ 2,335 $ 4,476 $ 4,669 Interest cost 4,525 3,915 9,040 7,830 Expected return on plan assets (8,914) (10,454) (17,833) (20,908) Amortization of prior service cost 648 736 1,295 1,472 Amortization of actuarial loss 605 1,382 1,212 2,764 Net periodic benefit (credit) / cost $ (897) $ (2,086) $ (1,810) $ (4,173)

Business Segment Information (T

Business Segment Information (Tables)	6 Months Ended
	Jun. 30, 2022
Segment Reporting Information [Line Items]
Schedule of Segment Reporting Information, by Segment [Table Text Block]	The following table provides information about IPALCO’s business segments (in thousands): Three Months Ended Three Months Ended June 30, 2022 June 30, 2021 Utility All Other Total Utility All Other Total Revenues $ 389,614 $ — $ 389,614 $ 330,587 $ — $ 330,587 Depreciation and amortization $ 66,266 $ — $ 66,266 $ 62,994 $ — $ 62,994 Interest expense $ 21,262 $ 10,958 $ 32,220 $ 21,255 $ 10,944 $ 32,199 Earnings/(loss) from operations before income tax $ 10,008 $ (11,201) $ (1,193) $ 32,587 $ (10,872) $ 21,715 Six Months Ended Six Months Ended June 30, 2022 June 30, 2021 Utility All Other Total Utility All Other Total Revenues $ 813,725 $ — $ 813,725 $ 692,788 $ — $ 692,788 Depreciation and amortization $ 132,286 $ — $ 132,286 $ 126,083 $ — $ 126,083 Interest expense $ 42,006 $ 21,916 $ 63,922 $ 42,776 $ 19,490 $ 62,266 Earnings/(loss) from operations before income tax $ 80,748 $ (22,255) $ 58,493 $ 89,882 $ (19,348) $ 70,534 As of June 30, 2022 As of December 31, 2021 Utility All Other Total Utility All Other Total Total assets $ 5,465,375 $ 15,238 $ 5,480,613 $ 5,222,987 $ 16,780 $ 5,239,767

Revenue (Tables)

Revenue (Tables)	6 Months Ended
	Jun. 30, 2022
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue [Table Text Block]	For the Three Months Ended June 30, 2022 2021 Retail Revenues Retail revenue from contracts with customers: Residential $ 144,476 $ 129,254 Small commercial and industrial 56,944 48,208 Large commercial and industrial 149,741 127,009 Public lighting 2,351 2,270 Other (1) 4,260 4,175 Total retail revenue from contracts with customers 357,772 310,916 Alternative revenue programs 6,470 11,710 Wholesale Revenues Wholesale revenues from contracts with customers: 21,476 4,918 Miscellaneous Revenues Transmission and other revenue from contracts with customers 3,333 2,692 Other miscellaneous revenues (2) 563 351 Total Revenues $ 389,614 $ 330,587 (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 revenues not accounted for under ASC 606

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2022
Leases [Abstract]
Operating Lease, Lease Income [Table Text Block]	The following table shows the future minimum lease receipts as of June 30, 2022 for the remainder of 2022 through 2026 and thereafter (in thousands): Operating Leases 2022 $ 488 2023 906 2024 786 2025 553 2026 554 Thereafter 1,559 Total $ 4,846
Lease, Cost	The following table summarizes the components of lease expense recognized in " Operating Costs and Expenses " on the accompanying Condensed Consolidated Statements of Operations for the three and six months ended June 30, 2022 and 2021, respectively (in thousands): For the Three Months Ended June 30, For the Six Months Ended June 30, Components of Lease Cost 2022 2021 2022 2021 Finance lease cost: Amortization of right- of-use assets $ 130 $ — $ 281 $ — Interest on lease liabilities 188 — 403 — Total lease cost $ 318 $ — $ 684 $ —

Overview and Summary of Signi_4

Overview and Summary of Significant Accounting Policies (Details) $ in Thousands	3 Months Ended						6 Months Ended
	Jun. 30, 2022 USD ($) generating_station MW	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Jun. 30, 2022 USD ($) generating_station MW	Jun. 30, 2021 USD ($)	May 31, 2021
Debt Instrument [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 806,562	$ 822,132	$ 794,600	$ 526,680	$ 558,531	$ 520,988	$ 806,562	$ 526,680
Asset Retirement Obligation, Revision of Estimate							22,402	0
Asset Retirement Obligation, Accretion Expense							3,921	3,992
Accumulated Other Comprehensive Income (Loss), Net of Tax	7,799	(12,484)	(29,407)		(13,826)	(43,420)	7,799
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	18,925			(17,143)			34,490	12,907
Inventories	51,681		41,626				51,681
Cash and cash equivalents	$ 16,826		6,912				$ 16,826
Number of customers	517,000						517,000
Number of generating stations | generating_station	4						4
Restricted Cash and Cash Equivalents	$ 5		5				$ 5
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	16,831		6,917	20,634		26,622	16,831	20,634
Regulatory assets, current	64,768		60,273				64,768
Inventory, Net	116,449		101,899				116,449
Other Comprehensive Income (Loss), Net of Tax	20,283	20,283	16,923	(15,767)	(15,767)	29,594	37,206	13,827
Accounts Receivable, Allowance for Credit Loss, Current	579		647	1,553		3,155	579	1,553
Accounts Receivable, Credit Loss Expense (Reversal)							2,492	1,030
Accounts Receivable, Allowance for Credit Loss, Writeoff							(3,362)	(3,741)
Accounts Receivable, Allowance for Credit Loss, Recovery							802	1,109
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	7,799	$ (12,484)	(29,407)		$ (13,826)	(43,420)	7,799
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	18,925			(17,143)			34,490	12,907
Income Tax Expense (Benefit)	(241)			4,505			12,254	14,540
Income Tax Expense (Benefit)	(241)			4,505			12,254	14,540
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	$ 1,358			1,376			$ 2,716	920
Petersburg Unit 1 retired MW									230
Petersburg Unit 2 Planned Retirement MW in 2023							415
Preferred Resource Portfolio Coal-Fired Generation Retirement MW by 2023	630						630
Asset Retirement Obligation, Period Increase (Decrease)							$ 22,400
Asset Retirement Obligation	$ 210,930		$ 189,509	194,926		$ 195,236	210,930	194,926
Asset Retirement Obligation, Liabilities Incurred							1,059	0
Asset Retirement Obligation, Liabilities Settled							(5,961)	(4,302)
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain (Loss), Net							$ 3,201
Indianapolis Power And Light Company [Member]
Debt Instrument [Line Items]
Electric generation capability for winter, megawatts | MW	3,475						3,475
Electric generation capability for summer, megawatts | MW	3,330						3,330
Aes U.S. Investments [Member]
Debt Instrument [Line Items]
Ownership percentage by parent (percent)	82.35%						82.35%
CDPQ [Member]
Debt Instrument [Line Items]
Ownership percentage by parent (percent)	17.65%						17.65%
Ownership interest in parent company (percent)	15%						15%
AES U.S. Holdings, LLC [Member]
Debt Instrument [Line Items]
Ownership interest in parent company (percent)	85%						85%
Harding Street [Member]
Debt Instrument [Line Items]
Amount of New Operation for Battery Storage Unit, megawatts | MW	20						20
Interest Rate Contract [Member]
Debt Instrument [Line Items]
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	$ 7,799			(29,593)			$ 7,799	(29,593)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Debt Instrument [Line Items]
Interest and Debt Expense	(1,807)			(1,807)			(3,614)	(1,204)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest and Debt Expense	(1,807)			(1,807)			(3,614)	(1,204)
Income Tax Expense (Benefit)	449			431			898	284
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	1,358			1,376			2,716	920
Income Tax Expense (Benefit)	449			431			898	284
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 1,358			$ 1,376			$ 2,716	$ 920

Overview and Summary Of Signi_5

Overview and Summary Of Significant Accounting Policies Schedule of Changes in Asset Retirement Obligation (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021	Dec. 31, 2020
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligation	$ 210,930	$ 194,926	$ 189,509	$ 195,236
Asset Retirement Obligation, Revision of Estimate	22,402	0
Asset Retirement Obligation, Liabilities Settled	5,961	4,302
Asset Retirement Obligation, Accretion Expense	$ 3,921	$ 3,992

Overview and Summary Of Signi_6

Overview and Summary Of Significant Accounting Policies Schedule of cash, restricted cash and cash equivalents (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021	Dec. 31, 2020
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 16,826	$ 6,912
Restricted Cash and Cash Equivalents	5	5
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 16,831	$ 6,917	$ 20,634	$ 26,622

Overview and Summary Of Signi_7

Overview and Summary Of Significant Accounting Policies Schedule of Accounts and notes receivable (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables from Customers	$ 105,650		$ 100,952
Unbilled Receivables, Current	67,442		64,758
Accounts Receivable, Related Parties	370		169
Other Receivables	12,925		13,904
Accounts Receivable, Allowance for Credit Loss	(579)		(647)
Accounts Receivable, after Allowance for Credit Loss, Current	185,808		179,136
Accounts Receivable, Allowance for Credit Loss, Current	579	$ 1,553	$ 647	$ 3,155
Accounts Receivable, Credit Loss Expense (Reversal)	2,492	1,030
Accounts Receivable, Allowance for Credit Loss, Writeoff	(3,362)	(3,741)
Accounts Receivable, Allowance for Credit Loss, Recovery	$ 802	$ 1,109

Regulatory Matters (Details)

Regulatory Matters (Details) $ in Thousands	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)	May 31, 2021
Regulatory Matters [Line Items]
Total current regulatory assets	$ 153,273	$ 63,813
Total long-term regulatory assets	619,398	656,977
Total current regulatory liabilities	15,988	4,241
Total long-term regulatory liabilities	$ 822,259	$ 826,709
Preferred Resource Portfolio Coal-Fired Generation Retirement MW by 2023	630
Petersburg Unit 1 retired MW			230

Fair Value (Narrative) (Details

Fair Value (Narrative) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Fair Value, Option, Quantitative Disclosures [Line Items]
Financial Transmission Rights Fair Value Disclosure	$ 14,527		$ 1,235
Interest Rate Cash Flow Hedge Liability at Fair Value	3,473
Investments, Fair Value Disclosure	3,291		3,605
Asset Retirement Obligation, Revision of Estimate	22,402	$ 0
Asset retirement obligations	210,930		189,509
Unamortized deferred financing costs	24,500		25,200
Unamortized debt discount	6,300		6,400
Financial Transmission Rights Fair Value Disclosure	14,527		1,235
Assets, Fair Value Disclosure	17,818		4,840
Derivative Liability			49,382
Financial and Nonfinancial Liabilities, Fair Value Disclosure	3,473		49,382
Money Market Funds [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Investments, Fair Value Disclosure	8		11
Mutual Fund [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Investments, Fair Value Disclosure	3,283		3,594
Fair Value, Inputs, Level 3 [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Financial Transmission Rights Fair Value Disclosure	14,527		1,235
Interest Rate Cash Flow Hedge Liability at Fair Value	0
Investments, Fair Value Disclosure	0		0
Financial Transmission Rights Fair Value Disclosure	14,527		1,235
Assets, Fair Value Disclosure	14,527		1,235
Derivative Liability			0
Financial and Nonfinancial Liabilities, Fair Value Disclosure	0		0
Fair Value, Inputs, Level 3 [Member] | Money Market Funds [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Investments, Fair Value Disclosure	0		0
Fair Value, Inputs, Level 3 [Member] | Mutual Fund [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Investments, Fair Value Disclosure	0		0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Financial Transmission Rights Fair Value Disclosure	0		0
Interest Rate Cash Flow Hedge Liability at Fair Value	3,473
Investments, Fair Value Disclosure	3,283		3,594
Financial Transmission Rights Fair Value Disclosure	0		0
Assets, Fair Value Disclosure	3,283		3,594
Derivative Liability			49,382
Financial and Nonfinancial Liabilities, Fair Value Disclosure	3,473		49,382
Fair Value, Inputs, Level 2 [Member] | Money Market Funds [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Investments, Fair Value Disclosure	0		0
Fair Value, Inputs, Level 2 [Member] | Mutual Fund [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Investments, Fair Value Disclosure	3,283		3,594
Fair Value, Inputs, Level 1 [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Financial Transmission Rights Fair Value Disclosure	0		0
Interest Rate Cash Flow Hedge Liability at Fair Value	0
Investments, Fair Value Disclosure	8		11
Financial Transmission Rights Fair Value Disclosure	0		0
Assets, Fair Value Disclosure	8		11
Derivative Liability			0
Financial and Nonfinancial Liabilities, Fair Value Disclosure	0		0
Fair Value, Inputs, Level 1 [Member] | Money Market Funds [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Investments, Fair Value Disclosure	8		11
Fair Value, Inputs, Level 1 [Member] | Mutual Fund [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Investments, Fair Value Disclosure	0		$ 0
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Derivative, Notional Amount	$ 400,000

Fair Value Summary of fair valu

Fair Value Summary of fair value Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	$ 3,291	$ 3,605
Financial Transmission Rights Fair Value Disclosure	14,527	1,235
Assets, Fair Value Disclosure	17,818	4,840
Interest Rate Cash Flow Hedge Liability at Fair Value	3,473
Derivative Liability		49,382
Financial and Nonfinancial Liabilities, Fair Value Disclosure	3,473	49,382
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	8	11
Financial Transmission Rights Fair Value Disclosure	0	0
Assets, Fair Value Disclosure	8	11
Interest Rate Cash Flow Hedge Liability at Fair Value	0
Derivative Liability		0
Financial and Nonfinancial Liabilities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	3,283	3,594
Financial Transmission Rights Fair Value Disclosure	0	0
Assets, Fair Value Disclosure	3,283	3,594
Interest Rate Cash Flow Hedge Liability at Fair Value	3,473
Derivative Liability		49,382
Financial and Nonfinancial Liabilities, Fair Value Disclosure	3,473	49,382
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	0	0
Financial Transmission Rights Fair Value Disclosure	14,527	1,235
Assets, Fair Value Disclosure	14,527	1,235
Interest Rate Cash Flow Hedge Liability at Fair Value	0
Derivative Liability		0
Financial and Nonfinancial Liabilities, Fair Value Disclosure	0	0
Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	8	11
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	8	11
Money Market Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	0	0
Money Market Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	0	0
Mutual Fund [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	3,283	3,594
Mutual Fund [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	0	0
Mutual Fund [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	3,283	3,594
Mutual Fund [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	$ 0	$ 0

Fair Value (Schedule Of Face An

Fair Value (Schedule Of Face And Fair Value Of Debt) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount	$ 6,300	$ 6,400
Face Value	2,953,800	2,743,800
Fair Value	2,859,833	3,229,118
Fixed Rate [Member]
Debt Instrument [Line Items]
Face Value	2,683,800	2,683,800
Fair Value	2,589,833	3,169,118
Variable Rate [Member]
Debt Instrument [Line Items]
Face Value	270,000	60,000
Fair Value	$ 270,000	$ 60,000

Derivative Instruments and He_3

Derivative Instruments and Hedging Activities (Details) MWh in Thousands	3 Months Ended						6 Months Ended		12 Months Ended
	Jun. 30, 2022 USD ($) MWh	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Jun. 30, 2022 USD ($) MWh	Jun. 30, 2021 USD ($)	Dec. 31, 2022
Other Comprehensive Income (Loss), Net of Tax	$ 20,283,000	$ 20,283,000	$ 16,923,000	$ (15,767,000)	$ (15,767,000)	$ 29,594,000	$ 37,206,000	$ 13,827,000
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	18,925,000			(17,143,000)			34,490,000	12,907,000
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	1,358,000			1,376,000			2,716,000	920,000
Accumulated Other Comprehensive Income (Loss), Net of Tax	7,799,000	$ (12,484,000)	(29,407,000)		$ (13,826,000)	$ (43,420,000)	7,799,000
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	18,925,000			(17,143,000)			34,490,000	12,907,000
Regulatory assets	153,273,000		63,813,000				153,273,000
Regulatory assets	$ 153,273,000		63,813,000				$ 153,273,000
FTR [Member] | Not Designated as Hedging Instrument [Member]
Purchase of Units Derivative Instruments Financial Transmission Rights | MWh	11,550						11,550
Sale of Units Derivative Instruments Financial Transmission Rights | MWh	0						0
Derivative, Nonmonetary Notional Amount, Purchase (Sales), Net | MWh	11,550						11,550
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Purchase of Derivative Instruments Interest Rate Swap	$ 400,000,000						$ 400,000,000
Sale of Derivative Instruments Interest Rate Swap	0						0
Derivative, Notional Amount, Purchase (Sales), Net	400,000,000						400,000,000
Interest Rate Contract [Member]
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	7,799,000			$ (29,593,000)			7,799,000	$ (29,593,000)
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net	(5,375,000)						(5,375,000)
Maximum Length of Time Hedged in Cash Flow Hedge									27 months
Forward power contracts | Not Designated as Hedging Instrument [Member]
Unrealized Gain (Loss) on Derivatives	2,700,000						800,000
Unrealized Gain (Loss) on Derivatives	2,700,000						800,000
Realized Gains Forward Power Contracts | Not Designated as Hedging Instrument [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain	1,300,000						1,300,000
Derivative Instruments Not Designated as Hedging Instruments, Gain	1,300,000						1,300,000
Other Current Assets [Member] | FTR [Member] | Not Designated as Hedging Instrument [Member]
Derivative Asset, Fair Value, Gross Asset			1,235,000
Derivative Liability, Noncurrent | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Derivative Liability, Fair Value, Gross Liability	$ 3,473,000		$ 49,382,000				$ 3,473,000

Debt (Schedule Long-Term Indebt

Debt (Schedule Long-Term Indebtedness) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Unamortized discount - net	$ (6,300)	$ (6,400)
Deferred financing costs	(24,500)	(25,200)
Long-term debt	2,653,482	2,652,186
Less: Current Portion of Long-term Debt	0	0
Net Consolidated IPALCO Long-term Debt	2,653,482	2,652,186
Indianapolis Power And Light Company [Member]
Debt Instrument [Line Items]
First mortgage bonds	1,780,613	1,780,032
Unamortized discount - net	(5,776)	(5,855)
Long-term debt	$ 1,780,613	1,780,032
Indianapolis Power And Light Company [Member] | First Mortgage Bond 4.55% Due December 2024 [Member]
Debt Instrument [Line Items]
Debt, stated interest rate	3.125%
First mortgage bonds	$ 40,000	40,000
Indianapolis Power And Light Company [Member] | First Mortgage Bond 6.60% Due January 2034 [Member]
Debt Instrument [Line Items]
Debt, stated interest rate	6.60%
First mortgage bonds	$ 100,000	100,000
Indianapolis Power And Light Company [Member] | First Mortgage Bond 6.05% Due October 2036 [Member]
Debt Instrument [Line Items]
Debt, stated interest rate	6.05%
First mortgage bonds	$ 158,800	158,800
Indianapolis Power And Light Company [Member] | First Mortgage Bond 6.60% Due June 2037 [Member]
Debt Instrument [Line Items]
Debt, stated interest rate	6.60%
First mortgage bonds	$ 165,000	165,000
Indianapolis Power And Light Company [Member] | First Mortgage Bond 4.875% Due November 2041 [Member]
Debt Instrument [Line Items]
Debt, stated interest rate	4.875%
First mortgage bonds	$ 140,000	140,000
Indianapolis Power And Light Company [Member] | First Mortgage Bond 4.65% Due June 2043 [Member]
Debt Instrument [Line Items]
Debt, stated interest rate	4.65%
First mortgage bonds	$ 170,000	170,000
Indianapolis Power And Light Company [Member] | First Mortgage Bond 4.50% Due June 2044[Member]
Debt Instrument [Line Items]
Debt, stated interest rate	4.50%
First mortgage bonds	$ 130,000	130,000
Indianapolis Power And Light Company [Member] | First Mortgage Bond 4.70%, Due September 2045 [Member]
Debt Instrument [Line Items]
Debt, stated interest rate	4.70%
First mortgage bonds	$ 260,000	260,000
Indianapolis Power And Light Company [Member] | FMB Twenty [Member]
Debt Instrument [Line Items]
Debt, stated interest rate	4.05%
First mortgage bonds	$ 350,000	350,000
Indianapolis Power And Light Company [Member] | FMB Twenty - one [Member]
Debt Instrument [Line Items]
Debt, stated interest rate	4.875%
First mortgage bonds	$ 105,000	105,000
Indianapolis Power And Light Company [Member] | FMB Twenty - two
Debt Instrument [Line Items]
Debt, stated interest rate	0.75%
First mortgage bonds	$ 30,000	30,000
Indianapolis Power And Light Company [Member] | FMB Twenty - three
Debt Instrument [Line Items]
Debt, stated interest rate	0.95%
First mortgage bonds	$ 60,000	60,000
Indianapolis Power And Light Company [Member] | FMB Twenty - four
Debt Instrument [Line Items]
Debt, stated interest rate	1.40%
First mortgage bonds	$ 55,000	55,000
Indianapolis Power And Light Company [Member] | FMB Twenty - five
Debt Instrument [Line Items]
Debt, stated interest rate	0.65%
First mortgage bonds	$ 40,000	40,000
Ipalco Enterprises, Inc. [Member]
Debt Instrument [Line Items]
Unamortized discount - net	(476)	(527)
Deferred financing costs	(6,655)	(7,319)
Net Consolidated IPALCO Long-term Debt	$ 872,869	872,154
Ipalco Enterprises, Inc. [Member] | Three Point Seven Zero Percent Senior Secured Notes [Domain]
Debt Instrument [Line Items]
Debt, stated interest rate	3.70%
Long-term debt	$ 405,000	405,000
Ipalco Enterprises, Inc. [Member] | Four Point Two Five Percent Senior Secured Notes
Debt Instrument [Line Items]
Debt, stated interest rate	4.25%
Long-term debt	$ 475,000	475,000
First Mortgage Bonds [Member] | Indianapolis Power And Light Company [Member]
Debt Instrument [Line Items]
Deferred financing costs	$ (17,411)	$ (17,913)

Debt (Narrative) (Details)

Debt (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Sep. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Contract with Customer, Liability, Revenue Recognized	$ 0	$ 200	$ 0	$ 500
Long-term Debt	2,653,482		2,653,482			$ 2,652,186
Subsidiaries [Member]
Debt Instrument [Line Items]
Long-term Debt	1,780,613		1,780,613			1,780,032
Secured Debt	1,780,613		1,780,613			1,780,032
Subsidiaries [Member] | FMB Twenty - four
Debt Instrument [Line Items]
Secured Debt	$ 55,000		$ 55,000			55,000
Debt Instrument, Interest Rate, Stated Percentage	1.40%		1.40%
Subsidiaries [Member] | FMB Twenty - five
Debt Instrument [Line Items]
Secured Debt	$ 40,000		$ 40,000			40,000
Debt Instrument, Interest Rate, Stated Percentage	0.65%		0.65%
Parent Company [Member] | Three Point Four Five Percent Senior Secured Notes [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 475,000		$ 475,000			475,000
Debt Instrument, Interest Rate, Stated Percentage	4.25%		4.25%
Parent Company [Member] | Three Point Seven Zero Percent Senior Secured Notes [Domain]
Debt Instrument [Line Items]
Long-term Debt	$ 405,000		$ 405,000			405,000
Debt Instrument, Interest Rate, Stated Percentage	3.70%		3.70%
Line of Credit [Member] | Committed Line of Credit [Member]
Debt Instrument [Line Items]
Line of credit, outstanding borrowings					$ 70,000	$ 60,000

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Tax Disclosure [Abstract]
State and federal income tax rate	20.20%	20.70%	20.90%	20.60%
Effective Income Tax Rate Reconciliation, at Combined Federal and State Statutory Income Tax Rate, Percent			24.90%
Income Tax Contingency [Line Items]
State and federal income tax rate	20.20%	20.70%	20.90%	20.60%
Estimated Annual Effective Income Tax Rate			20.90%

Benefit Plans (Narrative) (Deta

Benefit Plans (Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Postretirement Health Care Benefits [Member] | Subsidiaries [Member]
Defined Benefit Plan Disclosure [Line Items]
Unfunded obligation	$ 4	$ 3.9

Benefit Plans (Schedule Of Defi

Benefit Plans (Schedule Of Defined Benefit Plans Disclosures) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net Unfunded Status of Plans [Roll Forward]
Service cost	$ (2,239)	$ (2,335)	$ (4,476)	$ (4,669)
Interest cost	(4,525)	(3,915)	(9,040)	(7,830)
Expected return on assets	8,914	10,454	17,833	20,908
Regulatory Assets Related to Pensions [Roll Forward]
Amortization of prior service cost	(648)	(736)	(1,295)	(1,472)
Defined Benefit Plan, Amortization of Gain (Loss)	$ (605)	$ (1,382)	$ (1,212)	$ (2,764)

Benefit Plans (Schedule Of Net

Benefit Plans (Schedule Of Net Periodic Benefit Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Retirement Benefits [Abstract]
Service cost	$ 2,239	$ 2,335	$ 4,476	$ 4,669
Interest cost	4,525	3,915	9,040	7,830
Expected return on assets	(8,914)	(10,454)	(17,833)	(20,908)
Amortization of prior service cost	648	736	1,295	1,472
Amortization of actuarial loss	605	1,382	1,212	2,764
Net periodic benefit cost	$ (897)	$ (2,086)	$ (1,810)	$ (4,173)

Commitments and Contingencies (

Commitments and Contingencies (Details) $ in Thousands	1 Months Ended
	Oct. 31, 2009 coal_fired_electric_generating_facility	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)
Entity Information [Line Items]
Payment of Civil Penalties		$ 1,525
Environmental Mitigation Project Costs		5,000
Environmentally Beneficial Project Expenditure		325
Total Legal Loss Contingencies Accrued		0	$ 200
Probable Insurance Recoveries Receivables		700	12,500
Issued Guarantees		$ 280,800	$ 226,200
Indianapolis Power And Light Company [Member]
Entity Information [Line Items]
Number of facilities with violations of Federal Clean Air Act | coal_fired_electric_generating_facility	3

Business Segment Information (D

Business Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Segment Reporting Information [Line Items]
Income Tax Expense (Benefit)	$ (241)	$ 4,505	$ 12,254	$ 14,540
Net Income (Loss) Attributable to Parent	(952)	17,210	46,239	55,994
UTILITY OPERATING REVENUES	389,614	330,587	813,725	692,788
Depreciation and amortization	66,266	62,994	132,286	126,083
Interest Expense	32,220	32,199	63,922	62,266
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	(1,193)	21,715	58,493	70,534
Assets	5,480,613	5,239,767	5,480,613	5,239,767	$ 5,239,767
Interest Rate Cash Flow Hedge Liability at Fair Value	3,473		3,473
Electric [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization	66,266	62,994	132,286	126,083
Interest Expense	21,262	21,255	42,006	42,776
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	10,008	32,587	80,748	89,882
Assets	5,465,375	5,222,987	5,465,375	5,222,987
Other Segments [Member]
Segment Reporting Information [Line Items]
UTILITY OPERATING REVENUES	0	0	0	0
Depreciation and amortization	0	0	0	0
Interest Expense	10,958	10,944	21,916	19,490
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	(11,201)	(10,872)	(22,255)	(19,348)
Assets	15,238	16,780	15,238	16,780
Electricity [Member]
Segment Reporting Information [Line Items]
UTILITY OPERATING REVENUES	$ 389,614	$ 330,587	$ 813,725	$ 692,788

Revenue (Details)

Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Contract with Customer, Asset, before Allowance for Credit Loss	$ 173,500		$ 173,500		$ 163,000
Revenue from Contract with Customer, Excluding Assessed Tax	382,600	$ 318,500	799,200	$ 672,200
REVENUES	389,614	330,587	813,725	692,788
Contract with Customer, Liability	0		0		$ 0
Contract with Customer, Liability, Revenue Recognized	0	200	0	500
Retail Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	357,772	310,916	760,967	645,753
Other non-606 revenue	6,470	11,710	12,924	19,305
Wholesale Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	21,476	4,918	33,317	21,027
Miscellaneous revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3,333	2,692	4,948	5,373
Other non-606 revenue	563	351	1,569	1,330
Electricity [Member]
Disaggregation of Revenue [Line Items]
REVENUES	389,614	330,587	813,725	692,788
Utility | Retail Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	4,260	4,175	8,785	8,366
Utility | Retail Revenue [Member] | Residential Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	144,476	129,254	338,892	289,757
Utility | Retail Revenue [Member] | Small Commercial and Industrial
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	56,944	48,208	120,592	102,725
Utility | Retail Revenue [Member] | Large Commercial and Industrial
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	149,741	127,009	287,946	240,449
Utility | Retail Revenue [Member] | Public Lighting
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 2,351	$ 2,270	$ 4,752	$ 4,456

Leases (Details)

Leases (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Leases [Abstract]
Operating Lease, Lease Income	$ 300	$ 300	$ 600	$ 600
Lessor, Operating Lease, Payment to be Received, Year One	488		488
Lessor, Operating Lease, Payment to be Received, Year Two	906		906
Lessor, Operating Lease, Payment to be Received, Year Three	786		786
Lessor, Operating Lease, Payment to be Received, Year Four	553		553
Lessor, Operating Lease, Payment to be Received, Year Five	554		554
Lessor, Operating Lease, Payment to be Received, after Year Five	1,559		1,559
Lessor, Operating Lease, Payments to be Received	4,846		4,846
Lessor, Operating Lease, Assumptions and Judgments, Value of Underlying Asset, Amount	4,400		4,400
Property Subject to or Available for Operating Lease, Accumulated Depreciation	1,000		1,000
Lessee, Lease, Description [Line Items]
Operating Lease, Lease Income	300	300	600	600
Contract with Customer, Liability, Revenue Recognized	0	$ 200	0	500
Finance Lease, Right-of-Use Asset, Amortization	130		281
Finance Lease, Interest Expense	$ 188			403
Lease, Cost			$ 318	$ 684

Uncategorized Items - cik000072

Label	Element	Value
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock	$ 803,000
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock	803,000
Dividends, Common Stock	us-gaap_DividendsCommonStock	35,805,000
Dividends, Common Stock	us-gaap_DividendsCommonStock	30,073,000
Stock Issued During Period, Value, Other	us-gaap_StockIssuedDuringPeriodValueOther	41,000
Stock Issued During Period, Value, Other	us-gaap_StockIssuedDuringPeriodValueOther	26,000
Payments of Ordinary Dividends, Common Stock	us-gaap_PaymentsOfDividendsCommonStock	35,805,000
Payments of Ordinary Dividends, Common Stock	us-gaap_PaymentsOfDividendsCommonStock	30,073,000
Additional Paid-in Capital [Member]
Stock Issued During Period, Value, Other	us-gaap_StockIssuedDuringPeriodValueOther	26,000
Stock Issued During Period, Value, Other	us-gaap_StockIssuedDuringPeriodValueOther	$ 41,000