Ipalco Enterprises 10-Q 10 Aug 15 2015 Q2 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2015	Aug. 07, 2015
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2015
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2,015
Entity Registrant Name	IPALCO ENTERPRISES, INC.
Entity Central Index Key	728,391
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		101,504,105

Unaudited Condensed Consolidate

Unaudited Condensed Consolidated Statements Of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement [Abstract]
UTILITY OPERATING REVENUES	$ 292,477	$ 314,160	$ 624,678	$ 669,463
Operation:
Fuel	77,084	97,844	162,516	201,942
Other operating expenses	54,832	55,393	109,808	117,512
Power purchased	31,409	26,384	73,985	64,132
Maintenance	40,755	32,778	72,037	64,751
Depreciation and amortization	42,931	46,380	89,376	92,435
Taxes other than income taxes	10,559	11,004	23,492	23,212
Income taxes - net	8,781	11,203	26,982	27,762
Total utility operating expenses	266,351	280,986	558,196	591,746
UTILITY OPERATING INCOME	26,126	33,174	66,482	77,717
OTHER INCOME AND (DEDUCTIONS):
Allowance for equity funds used during construction	3,079	1,350	6,297	2,963
Loss on early extinguishment of debt	(19,323)	0	(19,323)	0
Miscellaneous income and (deductions) - net	(742)	(566)	(1,368)	(1,541)
Income tax benefit applicable to nonoperating income	12,557	5,397	18,581	11,151
Total other income and (deductions) - net	(4,429)	6,181	4,187	12,573
INTEREST AND OTHER CHARGES:
Interest on long-term debt	27,695	26,659	55,341	53,099
Other interest	499	466	948	919
Allowance for borrowed funds used during construction	(2,567)	(749)	(5,233)	(1,732)
Amortization of redemption premiums and expense on debt	1,335	1,316	2,669	2,635
Total interest and other charges - net	26,962	27,692	53,725	54,921
NET (LOSS) INCOME	(5,265)	11,663	16,944	35,369
LESS: PREFERRED DIVIDENDS OF SUBSIDIARY	804	804	1,607	1,607
NET (LOSS) INCOME APPLICABLE TO COMMON STOCK	$ (6,069)	$ 10,859	$ 15,337	$ 33,762

Unaudited Condensed Consolidat3

Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
UTILITY PLANT:
Utility plant in service	$ 4,885,709	$ 4,658,023
Less accumulated depreciation	2,268,586	2,264,606
Utility plant in service - net	2,617,123	2,393,417
Construction work in progress	470,409	447,399
Spare parts inventory	13,009	14,816
Property held for future use	1,002	1,002
Utility plant - net	3,101,543	2,856,634
OTHER ASSETS:
Nonutility property - at cost, less accumulated depreciation	520	522
Other long-term assets	6,399	6,221
Other assets - net	6,919	6,743
CURRENT ASSETS:
Cash and cash equivalents	56,726	26,933
Accounts receivable and unbilled revenue (less allowance for doubtful accounts of $2,445 and $2,076, respectively)	132,911	139,709
Fuel inventories - at average cost	68,161	47,550
Materials and supplies - at average cost	60,390	60,185
Deferred tax asset - current	55,383	61,782
Regulatory assets	2,132	93
Prepayments and other current assets	39,287	23,161
Total current assets	414,990	359,413
DEFERRED DEBITS:
Regulatory assets	425,598	419,193
Miscellaneous	36,336	25,835
Total deferred debits	461,934	445,028
TOTAL	3,985,386	3,667,818
Common shareholders' equity:
Paid in capital	383,223	168,610
Accumulated deficit	(39,566)	(17,339)
Total common shareholders' equity	343,657	151,271
Cumulative preferred stock of subsidiary	59,784	59,784
Long-term debt	1,825,071	1,951,013
Total capitalization	2,228,512	2,162,068
CURRENT LIABILITIES:
Short-term and current portion of long-term debt	270,380	50,000
Accounts payable	147,962	110,623
Accrued expenses	23,077	25,187
Accrued real estate and personal property taxes	19,171	19,177
Regulatory liabilities	37,473	27,943
Accrued interest	24,572	30,726
Customer deposits	29,214	28,337
Other current liabilities	12,560	12,881
Total current liabilities	564,409	304,874
DEFERRED CREDITS AND OTHER LONG-TERM LIABILITIES:
Regulatory liabilities	624,955	610,917
Deferred income taxes - net	426,174	421,127
Non-current income tax liability	7,147	7,042
Unamortized investment tax credit	4,570	5,229
Accrued pension and other postretirement benefits	68,305	96,464
Asset retirement obligations	60,553	59,098
Miscellaneous	761	999
Total deferred credits and other long-term liabilities	$ 1,192,465	$ 1,200,876
COMMITMENTS AND CONTINGENCIES
TOTAL	$ 3,985,386	$ 3,667,818

Unaudited Condensed Consolidat4

Unaudited Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Accounts receivable and unbilled revenue, allowance for doubtful accounts	$ 2,445	$ 2,076

Unaudited Condensed Consolidat5

Unaudited Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
CASH FLOWS FROM OPERATIONS:
Net income	$ 16,944	$ 35,369
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	98,667	92,923
(Deferral) amortization of regulatory assets	(7,147)	1,618
Amortization of debt premium	528	465
Deferred income taxes and investment tax credit adjustments - net	8,401	10
Loss on early extinguishment of debt	19,323	0
Allowance for equity funds used during construction	(6,160)	(2,840)
Change in certain assets and liabilities:
Accounts receivable	6,798	(1,216)
Fuel, materials and supplies	(20,817)	3,477
Income taxes receivable or payable	0	16,602
Financial transmission rights	(8,174)	(10,167)
Accounts payable and accrued expenses	6,660	(23,094)
Accrued real estate and personal property taxes	(6)	(374)
Accrued interest	(6,154)	694
Pension and other postretirement benefit expenses	(28,159)	(55,603)
Short-term and long-term regulatory assets and liabilities	10,340	4,299
Prepaids and other current assets	(7,889)	(5,955)
Other - net	192	(228)
Net cash provided by operating activities	83,347	55,980
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures - utility	(286,261)	(118,007)
Project development costs	(6,503)	(15,445)
Cost of removal, net of salvage	(6,205)	(2,479)
Other	29	(46)
Net cash used in investing activities	(298,940)	(135,977)
CASH FLOWS FROM FINANCING ACTIVITIES:
Short-term debt borrowings	132,000	105,000
Short-term debt repayments	(77,000)	(105,000)
Long-term borrowings, net of discount	404,712	128,358
Retirement of long-term debt, including make whole provision	(384,324)	0
Dividends on common stock	(37,564)	(42,800)
Issuance of common stock	214,366	0
Equity contribution from AES	0	106,400
Preferred dividends of subsidiary	(1,607)	(1,607)
Deferred financing costs paid	(4,111)	(1,548)
Retention payments on capital expenditures	(718)	0
Other	(368)	(87)
Net cash provided by financing activities	245,386	188,716
Net change in cash and cash equivalents	29,793	108,719
Cash and cash equivalents at beginning of period	26,933	19,067
Cash and cash equivalents at end of period	56,726	127,786
Cash paid during the period for:
Interest (net of amount capitalized)	57,191	51,575
Income taxes	0	0
Non-cash investing activities:
Accruals for capital expenditures	$ 57,829	$ 24,548

Organization

Organization	6 Months Ended
	Jun. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	ORGANIZATION IPALCO is a holding company incorporated under the laws of the state of Indiana. IPALCO, acquired by AES in March 2001, is owned by AES U.S. Investments ( 88.4% ) and CDPQ ( 11.6% ). As of June 30, 2015 , 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. Substantially all of IPALCO’s business consists of the generation, transmission, distribution and sale of electric energy conducted through its principal subsidiary, IPL. IPL was incorporated under the laws of the state of Indiana in 1926. IPL has approximately 480,000 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. IPL has an exclusive right to provide electric service to those customers. IPL owns and operates two primarily coal-fired generating plants, one combination coal and gas-fired plant and two combustion turbines at a separate site that are all used for generating electricity. IPL’s net electric generation capacity for winter is 3,233 MW and net summer capacity is 3,115 MW.

Summary Of Significant Accounti

Summary Of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Summary Of Significant Accounting Policies	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES The accompanying Financial Statements include the accounts of IPALCO, IPL and Mid-America Capital Resources, Inc., a non-regulated wholly-owned subsidiary of IPALCO. All significant intercompany amounts have been eliminated. The accompanying Financial Statements are unaudited; however, they have been prepared in accordance with GAAP for interim financial information and in conjunction with the rules and regulations of the SEC. Accordingly, they do not include all of the disclosures required by GAAP for annual fiscal reporting periods. In the opinion of management, all adjustments of a normal recurring nature necessary for fair presentation have been included. The electric utility business is affected by seasonal weather patterns throughout the year and, therefore, the operating revenues and associated operating expenses are not generated evenly by month during the year. These unaudited Financial Statements have been prepared in accordance with the accounting policies described in IPALCO’s 2014 Form 10-K and should be read in conjunction therewith. 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. New Accounting Pronouncements ASU No. 2015-03, Interest – Imputation of Interest (Subtopic 835-30) In April 2015, the FASB issued ASU No. 2015-03, which simplifies the presentation of debt issuance costs by requiring that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The recognition and measurement guidance for debt issuance costs are not affected by the amendments in this update. The standard is effective for annual reporting periods beginning after December 15, 2015 and interim periods therein, and requires the use of the full retrospective approach. Early adoption is permitted for financial statements that have not been previously issued. As of June 30, 2015 , the Company had approximately $19.3 million in deferred financing costs classified in other noncurrent assets that would be reclassified to reduce the related debt liabilities upon adoption of ASU No. 2015-03. ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) In May 2014, the FASB issued ASU No. 2014-09 which clarifies principles for recognizing revenue and will result in a common revenue standard for GAAP and International Financial Reporting Standards. The objective of the new standard is to provide a single and comprehensive revenue recognition model for all contracts with customers to improve comparability, and it supersedes prior, industry-specific guidance. The revenue standard contains principles that an entity will apply to determine the measurement of revenue and timing of when it is recognized. The standard requires an entity to recognize revenue to depict the transfer of goods or services to customers at an amount that the entity expects to be entitled to in exchange for those goods or services. In July 2015, the FASB decided to defer the effective date by one year, resulting in the new revenue standard being effective for annual reporting periods beginning after December 15, 2017 and interim periods therein. Early adoption is now permitted only as of the original effective date for public entities (that is, no earlier than 2017 for calendar year-end entities). The standard permits the use of two transition methods: either a full retrospective or modified retrospective approach. The Company has not yet selected a transition method and is currently evaluating the impact of adopting the standard on its consolidated financial statements effective January 1, 2018. ASU No. 2015-11, Simplifying the Measurement of Inventory (Topic 330) In July 2015, the FASB issued ASU No. 2015-11, which simplifies the subsequent measurement of inventory. It replaces the current lower of cost or market test with a lower of cost or net realizable value test for inventory measured using the first-in, first-out or average cost methods. The standard is effective for public entities for annual reporting periods beginning after December 15, 2016, and interim periods therein. Early adoption is permitted. The new guidance must be applied prospectively. The Company is currently evaluating the impact of adopting the standard on its consolidated financial statements effective January 1, 2017.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	FAIR VALUE MEASUREMENTS Fair Value Hierarchy ASC 820 defined and established a framework for measuring fair value and expands disclosures about fair value measurements for financial assets and liabilities that are adjusted to fair value on a recurring basis and/or financial assets and liabilities that are measured at fair value on a nonrecurring basis, which have been adjusted to fair value during the period. In accordance with ASC 820, we have categorized our financial assets and liabilities that are adjusted to fair value, based on the priority of the inputs to the valuation technique, following the three-level fair value hierarchy prescribed by ASC 820 as follows: Level 1 - unadjusted quoted prices for identical assets or liabilities in an active market; Level 2 - inputs from quoted prices in markets where trading occurs infrequently or quoted prices of instruments with similar attributes in active markets; and Level 3 - unobservable inputs reflecting management’s own assumptions about the inputs used in pricing the asset or liability. As of June 30, 2015 and December 31, 2014 , all of IPALCO’s financial assets or liabilities adjusted to fair value on a recurring basis (excluding pension assets – see Note 6, “ Pension and Other Postretirement Benefits ”) were considered Level 3, based on the above fair value hierarchy. These primarily consisted of financial transmission rights, which are used to offset MISO congestion charges. Because the benefit associated with financial transmission rights is a flow-through to IPL’s jurisdictional customers, IPL records a regulatory liability matching the value of the financial transmission rights. In addition, IPALCO had one financial asset, a nonutility investment accounted for using the cost method of accounting, which is measured at fair value on a nonrecurring basis, again using Level 3 measurements. No adjustments were made to this asset during the periods covered by this report. All of these financial assets and liabilities were not material to the Financial Statements in the periods covered by this report, individually or in the aggregate. Whenever possible, quoted prices in active markets are used to determine the fair value of our financial instruments. Our financial instruments are not held for trading or other speculative purposes. The estimated fair value of financial instruments has been determined by using available market information and appropriate valuation methodologies. However, considerable judgment is required in interpreting market data to develop the estimates of fair value. Accordingly, the estimates presented herein are not necessarily indicative of the amounts that we could realize in a current market exchange. The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts. Cash Equivalents As of June 30, 2015 and December 31, 2014 , our cash equivalents consisted of money market funds. The fair value of cash equivalents approximates their book value due to their short maturity (Level 1), which was $1.2 million and $5.1 million as of June 30, 2015 and December 31, 2014 , respectively. Indebtedness 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. Because trading of our debt occurs somewhat infrequently, we consider the fair values to be Level 2. It is not the purpose of this disclosure 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 for the periods ending: June 30, 2015 December 31, 2014 Face Value Fair Value Face Value Fair Value (In Millions) Fixed-rate $ 1,993.8 $ 2,138.2 $ 1,955.3 $ 2,231.2 Variable-rate 105.0 105.0 50.0 50.0 Total indebtedness $ 2,098.8 $ 2,243.2 $ 2,005.3 $ 2,281.2 The difference between the face value and the carrying value of this indebtedness represents unamortized discounts of $3.4 million and $4.3 million at June 30, 2015 and December 31, 2014 , respectively. Other Non-Recurring Fair Value Measurements ASC 410 “Asset Retirement and Environmental Obligations” addresses financial accounting and reporting for legal obligations associated with the retirement of long-lived assets that result from the acquisition, construction, development and/or normal operation. A legal obligation for purposes of ASC 410 is an obligation that a party is required to settle as a result of an existing law, statute, ordinance, written or oral contract or the doctrine of promissory estoppel. IPL’s ARO liabilities relate primarily to environmental issues involving asbestos-containing materials, ash ponds, landfills and miscellaneous contaminants associated with its generating plants, transmission system and distribution system. We use the cost approach to determine the fair value of IPL’s ARO liabilities, which is estimated by discounting expected cash outflows to their present value at the initial recording of the liabilities. Cash outflows are based on the approximate future disposal costs as determined by market information, historical information or other management estimates. These inputs to the fair value of the ARO liabilities would be considered Level 3 inputs under the fair value hierarchy. As of June 30, 2015 and December 31, 2014 , ARO liabilities were $60.6 million and $59.1 million , respectively.

Shareholders' Equity

Shareholders' Equity	6 Months Ended
	Jun. 30, 2015
Equity [Abstract]
Shareholders' Equity	SHAREHOLDERS' EQUITY On April 1, 2015, IPALCO issued and sold 11,818,828 shares of IPALCO's common stock to CDPQ for $214.4 million for funding needs primarily related to IPL's environmental construction program. IPALCO then made the same investment in IPL. As a result of this transaction, CDPQ's direct ownership interest in IPALCO is 11.6% and CDPQ's combined direct and indirect ownership interest in IPALCO is 24.9% .

Indebtedness

Indebtedness	6 Months Ended
	Jun. 30, 2015
Debt Disclosure [Abstract]
Indebtedness	. INDEBTEDNESS Long-Term Debt The following table presents our long-term indebtedness: June 30, December 31, Series Due 2015 2014 (In Thousands) IPL first mortgage bonds (see below): 4.90% (1) January 2016 $ 30,000 $ 30,000 4.90% (1) January 2016 41,850 41,850 4.90% (1) January 2016 60,000 60,000 5.40% (2) August 2017 24,650 24,650 3.875% (1) August 2021 55,000 55,000 3.875% (1) August 2021 40,000 40,000 4.55% (1) December 2024 40,000 40,000 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 Unamortized discount – net (2,898 ) (2,940 ) Total IPL first mortgage bonds 1,152,402 1,152,360 Total Long-term Debt – IPL 1,152,402 1,152,360 Long-term Debt – IPALCO: 7.25% Senior Secured Notes April 2016 33,530 400,000 5.00% Senior Secured Notes May 2018 400,000 400,000 3.45% Senior Secured Notes July 2020 405,000 — Unamortized discount – net (481 ) (1,347 ) Total Long-term Debt – IPALCO 838,049 798,653 Total Consolidated IPALCO Long-term Debt 1,990,451 1,951,013 Less: Current Portion of Long-term Debt 165,380 — Net Consolidated IPALCO Long-term Debt $ 1,825,071 $ 1,951,013 (1) First mortgage bonds are issued to the Indiana Finance Authority, to secure the loan of proceeds from the tax-exempt bonds issued by the Indiana Finance Authority. (2) First mortgage bonds are issued to the city of Petersburg, Indiana, to secure the loan proceeds from various tax-exempt instruments issued by the city. Line of Credit In May 2014, IPL entered into an amendment and restatement of its 5 -year $250 million revolving credit facility (the “Credit Agreement”) with a syndication of banks. This Credit Agreement is an unsecured committed line of credit to be used: (i) to finance capital expenditures; (ii) to refinance indebtedness under the existing credit agreement; (iii) to support working capital; and (iv) for general corporate purposes. This agreement matures on May 6, 2019 , and bears interest at variable rates as described in the Credit Agreement. It includes an uncommitted $150 million accordion feature to provide IPL with an option to request an increase in the size of the facility at any time during the term of the agreement, subject to approval by the lenders. Prior to execution, IPL and IPALCO had existing general banking relationships with the parties in this agreement. As of June 30, 2015 and December 31, 2014 , IPL had $55.0 million and $0.0 million of outstanding borrowings on the committed line of credit, respectively. IPL First Mortgage Bonds IPALCO has classified its outstanding $131.9 million aggregate principal amount of 4.90% IPL first mortgage bonds as short-term indebtedness as they are due January 2016. Management plans to refinance these bonds with new debt. In the event that we are unable to refinance these bonds on acceptable terms, IPL has available borrowing capacity on its revolving credit facility that could be used to satisfy the obligation. IPALCO's Senior Secured Notes In June 2015, IPALCO completed the sale of the 2020 IPALCO Notes pursuant to Rule 144A and Regulation S under the Securities Act of 1933, as amended. The 2020 IPALCO Notes were issued pursuant to an Indenture dated June 25, 2015, by and between IPALCO and U.S. Bank, National Association, as trustee. The 2020 IPALCO Notes were priced to the public at 99.929% of the principal amount. Net proceeds to IPALCO were approximately $399.5 million after deducting underwriting costs and estimated offering expenses. These costs are being amortized to the maturity date using the effective interest method. We used the net proceeds from this offering to fund the purchase of the 2016 IPALCO Notes validly tendered and pay for a related consent solicitation, to redeem any 2016 IPALCO Notes that remained outstanding after the completion of the tender, and to pay certain related fees, expenses and make-whole premiums. Of the 2016 IPALCO Notes outstanding, $366.5 million were tendered in June 2015. The remainder, $33.5 million , was classified as short-term indebtedness and redeemed in July 2015. An early tender premium was paid related to the tender offer and a redemption premium was paid related to the redemption of the 2016 IPALCO Notes. A loss on early extinguishment of debt of $19.3 million for the 2016 IPALCO Notes tendered in June 2015 is included as a separate line item within Other Income and (Deductions) in the accompanying Unaudited Condensed Consolidated Statements of Operations. The 2020 IPALCO Notes are secured by IPALCO's pledge of all of the outstanding common stock of IPL. The lien on the pledged shares is shared equally and ratably with IPALCO's existing senior secured notes. IPALCO has entered into a Pledge Agreement Supplement with the Bank of New York Mellon Trust Company, N.A., as Collateral Agent, dated June 25, 2015, to the Pledge Agreement between IPALCO and The Bank of New York Mellon Trust Company, N.A., dated November 14, 2001, as supplemented by a Pledge Agreement Supplement dated April 15, 2008 and a Pledge Agreement Supplement dated May 18, 2011, each by IPALCO in favor of the Collateral Agent. IPALCO has also agreed to register the 2020 IPALCO Notes under the Securities Act by filing an exchange offer registration statement or, under specified circumstances, a shelf registration statement with the SEC pursuant to a Registration Rights Agreement that IPALCO entered into with J.P. Morgan Securities LLC and Morgan Stanley & Co. LLC, as representatives of the initial purchasers of the 2020 IPALCO Notes.

Pension And Other Postretiremen

Pension And Other Postretirement Benefits	6 Months Ended
	Jun. 30, 2015
Compensation and Retirement Disclosure [Abstract]
Pension And Other Postretirement Benefits	PENSION AND OTHER POSTRETIREMENT BENEFITS The following table (in thousands) presents information for the six months ended June 30, 2015 , relating to the Pension Plans: Net unfunded status of plans: Net unfunded status at December 31, 2014, before tax adjustments $ (91,182 ) Net benefit cost components reflected in net funded status during first quarter: Service cost (2,079 ) Interest cost (7,408 ) Expected return on assets 11,206 Employer contributions during quarter 25,000 Net unfunded status at March 31, 2015, before tax adjustments $ (64,463 ) Net benefit cost components reflected in net funded status during second quarter: Service cost (2,078 ) Interest cost (7,408 ) Expected return on assets 11,206 Net unfunded status at June 30, 2015, before tax adjustments $ (62,743 ) Regulatory assets related to pensions (1) : Regulatory assets at December 31, 2014, before tax adjustments $ 236,891 Amount reclassified through net benefit cost: Amortization of prior service cost (1,216 ) Amortization of net actuarial loss (3,475 ) Regulatory assets at March 31, 2015, before tax adjustments $ 232,200 Amount reclassified through net benefit cost: Amortization of prior service cost (1,217 ) Amortization of net actuarial loss (3,475 ) Regulatory assets at June 30, 2015, before tax adjustments $ 227,508 (1) Amounts that would otherwise be charged/credited to Accumulated Other Comprehensive Income or Loss upon application of ASC 715, “Compensation – Retirement Benefits,” are recorded as a regulatory asset or liability because IPL has historically recovered and currently recovers pension and other postretirement benefit expenses in rates. These are unrecognized amounts yet to be recognized as components of net periodic benefit costs. Pension Expense The following table presents net periodic benefit cost information relating to the Pension Plans combined: For the Three Months Ended, For the Six Months Ended, June 30, June 30, 2015 2014 2015 2014 (In Thousands) (In Thousands) Components of net periodic benefit cost: Service cost $ 2,078 $ 1,807 $ 4,157 $ 3,615 Interest cost 7,408 7,789 14,816 15,577 Expected return on plan assets (11,206 ) (10,473 ) (22,412 ) (20,946 ) Amortization of prior service cost 1,217 1,213 2,433 2,426 Amortization of actuarial loss 3,475 2,426 6,950 4,855 Net periodic benefit cost $ 2,972 $ 2,762 $ 5,944 $ 5,527 In addition, IPL 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 was $5.7 million and $5.4 million at June 30, 2015 and December 31, 2014 , respectively. The related expense was not material to the Financial Statements in the periods covered by this report.

Commitments And Contingencies

Commitments And Contingencies	6 Months Ended
	Jun. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments And Contingencies	COMMITMENTS AND CONTINGENCIES Legal Loss Contingencies IPALCO and IPL are involved in litigation arising in the normal course of business. While the results of such litigation cannot be predicted with certainty, management believes that the final outcome will not have a material adverse effect on IPALCO’s results of operations, financial condition and cash flows. Amounts accrued or expensed for legal or environmental contingencies collectively during the periods covered by this report have not been material to the Financial Statements of IPALCO. Environmental Loss Contingencies We are subject to various federal, state, regional and local environmental protection and health and safety laws, as well as regulations governing, among other things, the generation, storage, handling, use, disposal and transportation of hazardous materials; the emission and discharge of hazardous and other materials into the environment; 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 In October 2009, IPL received a NOV and Finding of Violation from the EPA pursuant to the CAA Section 113(a). The NOV alleges violations of the CAA at IPL’s three primarily coal-fired electric generating facilities dating back to 1986. The alleged violations primarily pertain to the PSD and nonattainment New Source Review requirements under the CAA. Since receiving the letter, IPL management has met with the EPA staff regarding possible resolutions of the NOV. At this time, we cannot predict the ultimate resolution of this matter. However, settlements and litigated outcomes of similar cases have required companies to pay civil penalties, install additional pollution control technology on coal-fired electric generating units, retire existing generating units, and invest in additional environmental projects. A similar outcome in this case could have a material impact on our business. We would seek recovery of any operating or capital expenditures related to air pollution control technology to reduce regulated air emissions; however, there can be no assurances that we would be successful in that regard. IPL has recorded a contingent liability related to this matter.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2015
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES IPALCO’s effective combined state and federal income tax rates were 38.4% and 35.4% for the three and six months ended June 30, 2015, respectively, as compared to 34.8% and 33.0% for the three and six months ended June 30, 2014, respectively. The increase in the effective tax rates versus the comparable periods was primarily the result of an increase in state income tax expense (net of the federal tax benefit) and the disallowance of the domestic manufacturing deduction (Internal Revenue Code Section 199). The state tax expense in the current period is greater than the prior period due to the prior period containing an adjustment for a reduction in the enacted Indiana state tax rate. Due to the election of the final tangible property regulations in the prior year, IPALCO will not receive the benefit of the manufacturers’ deduction until the Net Operating Loss carryover caused by the election is used in its entirety. These increases in the rate were also partially offset by the increase in the allowance for equity funds used during construction in 2015.

Related Party Transactions

Related Party Transactions	6 Months Ended
	Jun. 30, 2015
Related Party Transactions [Abstract]
Related Party Transactions	RELATED PARTY TRANSACTIONS In December 2013, an agreement was signed, effective January 1, 2014, whereby the Service Company began providing services including accounting, legal, human resources, information technology and other corporate services on behalf of companies that are part of the U.S. SBU, including among other companies, IPALCO and IPL. The Service Company allocates the costs for these services based on cost drivers designed to result in fair and equitable allocations. This includes ensuring that the regulated utilities served, including IPL, are not subsidizing costs incurred for the benefit of non-regulated businesses. Total costs incurred by the Service Company on behalf of IPALCO were $12.2 million and $13.6 million during the six-month periods ended June 30, 2015 and 2014 , respectively. Total costs incurred by IPALCO on behalf of the Service Company were $3.7 million and $ 2.1 million during the six-month periods ended June 30, 2015 and 2014 , respectively. IPALCO had a prepaid balance with the Service Company of $3.5 million and $0.4 million as of June 30, 2015 and December 31, 2014 , respectively.

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 2015
Segment Reporting [Abstract]
Segment Information	SEGMENT INFORMATION Operating 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 IPL which is a vertically integrated electric utility. IPALCO’s reportable business segment is its utility segment, with all other non-utility business activities aggregated separately. The non-utility category primarily includes the remaining $33.5 million of 7.25% Senior Secured Notes due April 1, 2016 , the $400 million of 5.00% Senior Secured Notes due May 1, 2018 , and the $405 million of 3.45% Senior Secured Notes due July 15, 2020; approximately $43.7 million and $5.9 million of cash and cash equivalents, as of June 30, 2015 and December 31, 2014 , respectively; long-term investments of $5.2 million and $5.1 million at June 30, 2015 and December 31, 2014 , respectively; and income taxes and interest related to those items. All other non-utility assets represented approximately 2% of IPALCO’s total assets as of June 30, 2015 and approximately 1% of IPALCO's total assets as of December 31, 2014 . Net income for the utility segment was $45.0 million and $51.2 million for the six-month periods ended June 30, 2015 and 2014, respectively, and $15.3 million and $19.8 million for the three-month periods ended June 30, 2015 and 2014 , respectively. The accounting policies of the identified segment are consistent with those policies and procedures described in the summary of significant accounting policies. Intersegment sales, if any, are generally based on prices that reflect the current market conditions.

Summary Of Significant Accoun16

Summary Of Significant Accounting Policies (Policy)	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Use Of Management Estimates	Use of Management Estimates The preparation of financial statements in conformity with GAAP requires that management make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. The reported amounts of 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.
New Accounting Pronouncements	New Accounting Pronouncements ASU No. 2015-03, Interest – Imputation of Interest (Subtopic 835-30) In April 2015, the FASB issued ASU No. 2015-03, which simplifies the presentation of debt issuance costs by requiring that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The recognition and measurement guidance for debt issuance costs are not affected by the amendments in this update. The standard is effective for annual reporting periods beginning after December 15, 2015 and interim periods therein, and requires the use of the full retrospective approach. Early adoption is permitted for financial statements that have not been previously issued. As of June 30, 2015 , the Company had approximately $19.3 million in deferred financing costs classified in other noncurrent assets that would be reclassified to reduce the related debt liabilities upon adoption of ASU No. 2015-03. ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) In May 2014, the FASB issued ASU No. 2014-09 which clarifies principles for recognizing revenue and will result in a common revenue standard for GAAP and International Financial Reporting Standards. The objective of the new standard is to provide a single and comprehensive revenue recognition model for all contracts with customers to improve comparability, and it supersedes prior, industry-specific guidance. The revenue standard contains principles that an entity will apply to determine the measurement of revenue and timing of when it is recognized. The standard requires an entity to recognize revenue to depict the transfer of goods or services to customers at an amount that the entity expects to be entitled to in exchange for those goods or services. In July 2015, the FASB decided to defer the effective date by one year, resulting in the new revenue standard being effective for annual reporting periods beginning after December 15, 2017 and interim periods therein. Early adoption is now permitted only as of the original effective date for public entities (that is, no earlier than 2017 for calendar year-end entities). The standard permits the use of two transition methods: either a full retrospective or modified retrospective approach. The Company has not yet selected a transition method and is currently evaluating the impact of adopting the standard on its consolidated financial statements effective January 1, 2018. ASU No. 2015-11, Simplifying the Measurement of Inventory (Topic 330) In July 2015, the FASB issued ASU No. 2015-11, which simplifies the subsequent measurement of inventory. It replaces the current lower of cost or market test with a lower of cost or net realizable value test for inventory measured using the first-in, first-out or average cost methods. The standard is effective for public entities for annual reporting periods beginning after December 15, 2016, and interim periods therein. Early adoption is permitted. The new guidance must be applied prospectively. The Company is currently evaluating the impact of adopting the standard on its consolidated financial statements effective January 1, 2017.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2015
Fair Value Disclosures [Abstract]
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 for the periods ending: June 30, 2015 December 31, 2014 Face Value Fair Value Face Value Fair Value (In Millions) Fixed-rate $ 1,993.8 $ 2,138.2 $ 1,955.3 $ 2,231.2 Variable-rate 105.0 105.0 50.0 50.0 Total indebtedness $ 2,098.8 $ 2,243.2 $ 2,005.3 $ 2,281.2

Indebtedness (Tables)

Indebtedness (Tables)	6 Months Ended
	Jun. 30, 2015
Debt Disclosure [Abstract]
Schedule Long-Term Indebtedness	The following table presents our long-term indebtedness: June 30, December 31, Series Due 2015 2014 (In Thousands) IPL first mortgage bonds (see below): 4.90% (1) January 2016 $ 30,000 $ 30,000 4.90% (1) January 2016 41,850 41,850 4.90% (1) January 2016 60,000 60,000 5.40% (2) August 2017 24,650 24,650 3.875% (1) August 2021 55,000 55,000 3.875% (1) August 2021 40,000 40,000 4.55% (1) December 2024 40,000 40,000 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 Unamortized discount – net (2,898 ) (2,940 ) Total IPL first mortgage bonds 1,152,402 1,152,360 Total Long-term Debt – IPL 1,152,402 1,152,360 Long-term Debt – IPALCO: 7.25% Senior Secured Notes April 2016 33,530 400,000 5.00% Senior Secured Notes May 2018 400,000 400,000 3.45% Senior Secured Notes July 2020 405,000 — Unamortized discount – net (481 ) (1,347 ) Total Long-term Debt – IPALCO 838,049 798,653 Total Consolidated IPALCO Long-term Debt 1,990,451 1,951,013 Less: Current Portion of Long-term Debt 165,380 — Net Consolidated IPALCO Long-term Debt $ 1,825,071 $ 1,951,013 (1) First mortgage bonds are issued to the Indiana Finance Authority, to secure the loan of proceeds from the tax-exempt bonds issued by the Indiana Finance Authority. (2) First mortgage bonds are issued to the city of Petersburg, Indiana, to secure the loan proceeds from various tax-exempt instruments issued by the city.

Pension And Other Postretirem19

Pension And Other Postretirement Benefits (Tables)	6 Months Ended
	Jun. 30, 2015
Compensation and Retirement Disclosure [Abstract]
Schedule Of Defined Benefit Plans Disclosures	The following table (in thousands) presents information for the six months ended June 30, 2015 , relating to the Pension Plans: Net unfunded status of plans: Net unfunded status at December 31, 2014, before tax adjustments $ (91,182 ) Net benefit cost components reflected in net funded status during first quarter: Service cost (2,079 ) Interest cost (7,408 ) Expected return on assets 11,206 Employer contributions during quarter 25,000 Net unfunded status at March 31, 2015, before tax adjustments $ (64,463 ) Net benefit cost components reflected in net funded status during second quarter: Service cost (2,078 ) Interest cost (7,408 ) Expected return on assets 11,206 Net unfunded status at June 30, 2015, before tax adjustments $ (62,743 ) Regulatory assets related to pensions (1) : Regulatory assets at December 31, 2014, before tax adjustments $ 236,891 Amount reclassified through net benefit cost: Amortization of prior service cost (1,216 ) Amortization of net actuarial loss (3,475 ) Regulatory assets at March 31, 2015, before tax adjustments $ 232,200 Amount reclassified through net benefit cost: Amortization of prior service cost (1,217 ) Amortization of net actuarial loss (3,475 ) Regulatory assets at June 30, 2015, before tax adjustments $ 227,508 (1) Amounts that would otherwise be charged/credited to Accumulated Other Comprehensive Income or Loss upon application of ASC 715, “Compensation – Retirement Benefits,” are recorded as a regulatory asset or liability because IPL has historically recovered and currently recovers pension and other postretirement benefit expenses in rates. These are unrecognized amounts yet to be recognized as components of net periodic benefit costs.
Schedule Of Net Periodic Benefit Costs	The following table presents net periodic benefit cost information relating to the Pension Plans combined: For the Three Months Ended, For the Six Months Ended, June 30, June 30, 2015 2014 2015 2014 (In Thousands) (In Thousands) Components of net periodic benefit cost: Service cost $ 2,078 $ 1,807 $ 4,157 $ 3,615 Interest cost 7,408 7,789 14,816 15,577 Expected return on plan assets (11,206 ) (10,473 ) (22,412 ) (20,946 ) Amortization of prior service cost 1,217 1,213 2,433 2,426 Amortization of actuarial loss 3,475 2,426 6,950 4,855 Net periodic benefit cost $ 2,972 $ 2,762 $ 5,944 $ 5,527

Organization (Details)

Organization (Details) - Jun. 30, 2015 customer in Thousands	combination_coal_and_gas_fired_plantcustomercoal_fired_plantcombustion_turbineMW
Organization [Line Items]
Number of customers | customer	480
Number of coal fired plants | coal_fired_plant	2
Number of combustion coal and gas fired plants | combination_coal_and_gas_fired_plant	1
Number of combustion turbines | combustion_turbine	2
Electric generation capability for winter, megawatts	3,233
Electric generation capability for summer, megawatts	3,115
AES U.S. Investments [Member]
Organization [Line Items]
Ownership percentage by parent (percent)	88.40%
CDPQ [Member]
Organization [Line Items]
Ownership interest in parent company (percent)	15.00%
Ownership percentage by parent (percent)	11.60%
AES U.S. Holdings, LLC [Member]
Organization [Line Items]
Ownership interest in parent company (percent)	85.00%

Summary of Significant Accoun21

Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Decrease to other noncurrent assets	$ (6,919)	$ (6,743)
Decrease to long-term debt	(1,990,451)	$ (1,951,013)
Adjustments for New Accounting Principle, Early Adoption [Member]
Debt Instrument [Line Items]
Decrease to other noncurrent assets	$ 19,300

Fair Value Measurements (Narrat

Fair Value Measurements (Narrative) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Cash and cash equivalents	$ 1,200	$ 5,100
Unamortized debt discount	3,400	4,300
Asset retirement obligations	$ 60,553	$ 59,098

Fair Value Measurements (Schedu

Fair Value Measurements (Schedule Of Face And Fair Value Of Debt) (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Face Value	$ 2,098.8	$ 2,005.3
Fair Value	2,243.2	2,281.2
Fixed Rate [Member]
Debt Instrument [Line Items]
Face Value	1,993.8	1,955.3
Fair Value	2,138.2	2,231.2
Variable Rate [Member]
Debt Instrument [Line Items]
Face Value	105	50
Fair Value	$ 105	$ 50

Shareholders' Equity (Details)

Shareholders' Equity (Details) - USD ($) $ in Millions	Apr. 01, 2015	Jun. 30, 2015
Common Stock [Member]
Class of Stock [Line Items]
Number of shares issued and sold (shares)	11,818,828
Value of shares issued and sold	$ 214.4
CDPQ [Member]
Class of Stock [Line Items]
Percentage of direct ownership share of IPALCO		11.60%
Percentage of direct and indirect ownership share of IPALCO	24.90%

Indebtedness (Narrative) (Detai

Indebtedness (Narrative) (Details) - USD ($)	1 Months Ended		3 Months Ended		6 Months Ended
	Jun. 30, 2015	May. 31, 2014	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Debt Instrument [Line Items]
Line of credit facility, term		5 years
Maximum borrowing capacity		$ 250,000,000
Line of credit facility, accordion feature		$ 150,000,000
Line of credit, amount outstanding	$ 55,000,000		$ 55,000,000		$ 55,000,000		$ 0
Short-term Debt	1,990,451,000		1,990,451,000		1,990,451,000		1,951,013,000
Loss on early extinguishment of debt			19,323,000	$ 0	$ 19,323,000	$ 0
Letter of Credit [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date					May 6, 2019
Indianapolis Power And Light Company [Member]
Debt Instrument [Line Items]
First mortgage bonds	1,152,402,000		1,152,402,000		$ 1,152,402,000		1,152,360,000
Short-term Debt	1,152,402,000		1,152,402,000		1,152,402,000		1,152,360,000
4.90% IPL first mortgage bonds [Member] | Indianapolis Power And Light Company [Member]
Debt Instrument [Line Items]
First mortgage bonds	$ 131,900,000		$ 131,900,000		$ 131,900,000
Debt instrument, stated interest rate	4.90%		4.90%		4.90%
3.45% Senior Secured Notes [Member] | Ipalco Enterprises, Inc. [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date					Jul. 1, 2020
Debt instrument, stated interest rate	3.45%		3.45%		3.45%
IPALCO notes, public price percentage of par (percent)	99.929%
Proceeds from issuance of 2020 IPALCO notes	$ 399,500,000
Short-term Debt	$ 405,000,000		$ 405,000,000		$ 405,000,000		0
7.25% Senior Secured Notes [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date					Apr. 1, 2016
7.25% Senior Secured Notes [Member] | Ipalco Enterprises, Inc. [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date					Apr. 1, 2016
Debt instrument, stated interest rate	7.25%		7.25%		7.25%
Extinguishment of 2016 IPALCO notes	$ 366,500,000
Short-term Debt	33,530,000		$ 33,530,000		$ 33,530,000		$ 400,000,000
Other Income and (Deductions) [Member] | 7.25% Senior Secured Notes [Member] | Ipalco Enterprises, Inc. [Member]
Debt Instrument [Line Items]
Loss on early extinguishment of debt	$ 19,300,000

Indebtedness (Schedule Long-Ter

Indebtedness (Schedule Long-Term Indebtedness) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Unamortized discount - net	$ (3,400)	$ (4,300)
Long-term debt	1,990,451	1,951,013
Less: Current Portion of Long-term Debt	165,380	0
Net Consolidated IPALCO Long-term Debt	$ 1,825,071	1,951,013
7.25% Senior Secured Notes [Member]
Debt Instrument [Line Items]
Debt due date	Apr. 1, 2016
5.00% Senior Secured Notes [Member]
Debt Instrument [Line Items]
Debt due date	May 1, 2018
Indianapolis Power And Light Company [Member]
Debt Instrument [Line Items]
First mortgage bonds	$ 1,152,402	1,152,360
Unamortized discount - net	(2,898)	(2,940)
Long-term debt	1,152,402	1,152,360
Indianapolis Power And Light Company [Member] | First Mortgage Bond 4.90% Due January 2016 [Member]
Debt Instrument [Line Items]
First mortgage bonds	$ 30,000	30,000
Debt, stated interest rate	4.90%
Debt due date	Jan. 1, 2016
Indianapolis Power And Light Company [Member] | First Mortgage Bond 4.90% Due January 2016 [Member]
Debt Instrument [Line Items]
First mortgage bonds	$ 41,850	41,850
Debt, stated interest rate	4.90%
Debt due date	Jan. 1, 2016
Indianapolis Power And Light Company [Member] | First Mortgage Bond 4.90% Due January 2016 [Member]
Debt Instrument [Line Items]
First mortgage bonds	$ 60,000	60,000
Debt, stated interest rate	4.90%
Debt due date	Jan. 1, 2016
Indianapolis Power And Light Company [Member] | First Mortgage Bond 5.40% Due August 2017 [Member]
Debt Instrument [Line Items]
First mortgage bonds	$ 24,650	24,650
Debt, stated interest rate	5.40%
Debt due date	Aug. 1, 2017
Indianapolis Power And Light Company [Member] | First Mortgage Bond 3.875% Due August 2021 [Member]
Debt Instrument [Line Items]
First mortgage bonds	$ 55,000	55,000
Debt, stated interest rate	3.875%
Debt due date	Aug. 1, 2021
Indianapolis Power And Light Company [Member] | First Mortgage Bond 3.875% Due August 2021 [Member]
Debt Instrument [Line Items]
First mortgage bonds	$ 40,000	40,000
Debt, stated interest rate	3.875%
Debt due date	Aug. 1, 2021
Indianapolis Power And Light Company [Member] | First Mortgage Bond 4.55% Due December 2024 [Member]
Debt Instrument [Line Items]
First mortgage bonds	$ 40,000	40,000
Debt, stated interest rate	4.55%
Debt due date	Dec. 1, 2024
Indianapolis Power And Light Company [Member] | First Mortgage Bond 6.60% Due January 2034 [Member]
Debt Instrument [Line Items]
First mortgage bonds	$ 100,000	100,000
Debt, stated interest rate	6.60%
Debt due date	Jan. 1, 2034
Indianapolis Power And Light Company [Member] | First Mortgage Bond 6.05% Due October 2036 [Member]
Debt Instrument [Line Items]
First mortgage bonds	$ 158,800	158,800
Debt, stated interest rate	6.05%
Debt due date	Oct. 1, 2036
Indianapolis Power And Light Company [Member] | First Mortgage Bond 6.60% Due June 2037 [Member]
Debt Instrument [Line Items]
First mortgage bonds	$ 165,000	165,000
Debt, stated interest rate	6.60%
Debt due date	Jun. 1, 2037
Indianapolis Power And Light Company [Member] | First Mortgage Bond 4.875% Due November 2041 [Member]
Debt Instrument [Line Items]
First mortgage bonds	$ 140,000	140,000
Debt, stated interest rate	4.875%
Debt due date	Nov. 1, 2041
Indianapolis Power And Light Company [Member] | First Mortgage Bond 4.65% Due June 2043 [Member]
Debt Instrument [Line Items]
First mortgage bonds	$ 170,000	170,000
Debt, stated interest rate	4.65%
Debt due date	Jun. 1, 2043
Indianapolis Power And Light Company [Member] | First Mortgage Bond 4.50% Due June 2044[Member]
Debt Instrument [Line Items]
First mortgage bonds	$ 130,000	130,000
Debt, stated interest rate	4.50%
Debt due date	Jun. 1, 2044
Ipalco Enterprises, Inc. [Member]
Debt Instrument [Line Items]
Unamortized discount - net	$ (481)	(1,347)
Net Consolidated IPALCO Long-term Debt	838,049	798,653
Ipalco Enterprises, Inc. [Member] | 7.25% Senior Secured Notes [Member]
Debt Instrument [Line Items]
Long-term debt	$ 33,530	400,000
Debt, stated interest rate	7.25%
Debt due date	Apr. 1, 2016
Ipalco Enterprises, Inc. [Member] | 5.00% Senior Secured Notes [Member]
Debt Instrument [Line Items]
Long-term debt	$ 400,000	400,000
Debt, stated interest rate	5.00%
Debt due date	May 1, 2018
Ipalco Enterprises, Inc. [Member] | 3.45% Senior Secured Notes [Member]
Debt Instrument [Line Items]
Long-term debt	$ 405,000	$ 0
Debt, stated interest rate	3.45%
Debt due date	Jul. 1, 2020

Pension And Other Postretirem27

Pension And Other Postretirement Benefits (Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Pension Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Unfunded obligation	$ 5.7	$ 5.4

Pension And Other Postretirem28

Pension And Other Postretirement Benefits (Schedule Of Defined Benefit Plans Disclosures) (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net Unfunded Status of Plans [Roll Forward]
Net funded status before tax adjustments	$ (64,463)	$ (91,182)		$ (91,182)
Service cost	(2,078)	(2,079)	$ (1,807)	(4,157)	$ (3,615)
Interest cost	(7,408)	(7,408)	(7,789)	(14,816)	(15,577)
Expected return on assets	11,206	11,206	10,473	22,412	20,946
Employer contributions during quarter		25,000
Net funded status before tax adjustments	(62,743)	(64,463)		(62,743)
Regulatory Assets Related to Pensions [Roll Forward]
Regulatory assets before tax adjustments	232,200	236,891		236,891
Amortization of prior service cost	(1,217)	(1,216)	(1,213)	(2,433)	(2,426)
Amortization of net actuarial loss	(3,475)	(3,475)	$ (2,426)	(6,950)	$ (4,855)
Regulatory assets before tax adjustments	$ 227,508	$ 232,200		$ 227,508

Pension And Other Postretirem29

Pension And Other Postretirement Benefits (Schedule Of Net Periodic Benefit Costs) (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Compensation and Retirement Disclosure [Abstract]
Service cost	$ 2,078	$ 2,079	$ 1,807	$ 4,157	$ 3,615
Interest cost	7,408	7,408	7,789	14,816	15,577
Expected return on assets	(11,206)	(11,206)	(10,473)	(22,412)	(20,946)
Amortization of prior service cost	1,217	1,216	1,213	2,433	2,426
Amortization of actuarial loss	3,475	$ 3,475	2,426	6,950	4,855
Net periodic benefit cost	$ 2,972		$ 2,762	$ 5,944	$ 5,527

Commitments and Contingencies (

Commitments and Contingencies (Details)	1 Months Ended
	Oct. 31, 2009coal_fired_electric_generating_facility
Commitments and Contingencies Disclosure [Abstract]
Number of Coal-Fired Electric Generating Facilities	3

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Tax Disclosure [Abstract]
State and federal income tax rate	38.40%	34.80%	35.40%	33.00%

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Service Company [Member]
Related Party Transaction [Line Items]
Costs incurred by related party	$ 12.2	$ 13.6
Prepaid balance to related party	3.5		$ 0.4
Ipalco Enterprises, Inc. [Member]
Related Party Transaction [Line Items]
Costs incurred by related party	$ 3.7	$ 2.1

Segment Information (Details)

Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Debt Instrument [Line Items]
Cash	$ 43,700		$ 43,700		$ 5,900
Long-term nonutility investments	5,200		5,200		$ 5,100
Net income	(5,265)	$ 11,663	16,944	$ 35,369
7.25% Senior Secured Notes [Member]
Debt Instrument [Line Items]
Senior secured note	$ 33,500		$ 33,500
Senior notes, interest rate, percentage	7.25%		7.25%
Debt instrument, maturity date			Apr. 1, 2016
5.00% Senior Secured Notes [Member]
Debt Instrument [Line Items]
Senior secured note	$ 400,000		$ 400,000
Senior notes, interest rate, percentage	5.00%		5.00%
Debt instrument, maturity date			May 1, 2018
3.45% Senior Secured Notes [Member]
Debt Instrument [Line Items]
Senior secured note	$ 405,000		$ 405,000
Senior notes, interest rate, percentage	3.45%		3.45%
Utility Segment [Member]
Debt Instrument [Line Items]
Net income	$ 15,300	$ 19,800	$ 45,000	$ 51,200
Maximum [Member]
Debt Instrument [Line Items]
Nonutility assets representation rate, percentage			2.00%		1.00%