Ipalco Enterprises 10-Q 8 May 14 2014 Q1 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	3 Months Ended
	Mar. 31, 2014	7-May-14
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	31-Mar-14	'
Document Fiscal Period Focus	'Q1	'
Document Fiscal Year Focus	'2014	'
Entity Registrant Name	'IPALCO ENTERPRISES, INC.	'
Entity Central Index Key	'0000728391	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Non-accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	89,685,177

Condensed_Consolidated_Stateme

Condensed Consolidated Statements Of Comprehensive Income (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Condensed Consolidated Statements Of Comprehensive Income [Abstract]	'	'
UTILITY OPERATING REVENUES	$355,303	$327,017
UTILITY OPERATING EXPENSES:	'	'
Fuel	104,098	105,707
Other operating expenses	62,119	54,771
Power purchased	37,748	23,211
Maintenance	31,973	25,015
Depreciation and amortization	46,055	45,050
Taxes other than income taxes	12,208	11,877
Income taxes - net	16,559	18,424
Total utility operating expenses	310,760	284,055
UTILITY OPERATING INCOME	44,543	42,962
OTHER INCOME AND (DEDUCTIONS):	'	'
Allowance for equity funds used during construction	1,613	722
Miscellaneous income and (deductions) - net	-975	-537
Income tax benefit applicable to nonoperating income	5,754	5,868
Total other income and (deductions) - net	6,392	6,053
INTEREST AND OTHER CHARGES:	'	'
Interest on long-term debt	26,440	26,050
Other interest	453	429
Allowance for borrowed funds used during construction	-983	-410
Amortization of redemption premiums and expense on debt	1,319	1,285
Total interest and other charges - net	27,229	27,354
NET INCOME	23,706	21,661
LESS: PREFERRED DIVIDENDS OF SUBSIDIARY	803	803
NET INCOME APPLICABLE TO COMMON STOCK	$22,903	$20,858

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
UTILITY PLANT:	'	'
Utility plant in service	$4,501,343	$4,478,752
Less accumulated depreciation	2,184,741	2,149,994
Utility plant in service - net	2,316,602	2,328,758
Construction work in progress	246,856	207,727
Spare parts inventory	14,976	15,774
Property held for future use	1,002	1,002
Utility plant - net	2,579,436	2,553,261
OTHER ASSETS:	'	'
Nonutility property - at cost, less accumulated depreciation	526	528
Other investments	5,995	5,902
Other assets - net	6,521	6,430
CURRENT ASSETS:	'	'
Cash and cash equivalents	44,587	19,067
Accounts receivable and unbilled revenue (less allowance for doubtful accounts of $2,875 and $1,982, respectively)	149,670	143,408
Fuel inventories - at average cost	43,582	54,763
Materials and supplies - at average cost	58,387	58,067
Deferred tax asset - current	8,698	11,990
Regulatory assets	10,547	2,409
Prepayments and other current assets	28,298	23,247
Total current assets	343,769	312,951
DEFERRED DEBITS:	'	'
Regulatory assets	362,137	369,447
Miscellaneous	32,486	31,976
Total deferred debits	394,623	401,423
TOTAL	3,324,349	3,274,065
Common shareholder's equity:	'	'
Paid in capital	61,615	61,468
Accumulated deficit	-10,591	-13,694
Total common shareholder's equity	51,024	47,774
Cumulative preferred stock of subsidiary	59,784	59,784
Long-term debt	1,821,945	1,821,713
Total capitalization	1,932,753	1,929,271
CURRENT LIABILITIES:	'	'
Short-term debt (Note 4)	110,000	50,000
Accounts payable	122,887	99,966
Accrued expenses	22,282	27,417
Accrued real estate and personal property taxes	23,523	19,224
Regulatory liabilities	6,675	12,436
Accrued interest	47,175	29,691
Customer deposits	26,587	26,241
Other current liabilities	20,598	12,200
Total current liabilities	379,727	277,175
DEFERRED CREDITS AND OTHER LONG-TERM LIABILITIES:	'	'
Regulatory liabilities	591,907	585,753
Accumulated deferred income taxes - net	325,059	332,363
Non-current income tax liability	6,761	6,734
Unamortized investment tax credit	6,303	6,661
Accrued pension and other postretirement benefits	38,815	93,680
Asset retirement obligations	41,910	41,381
Miscellaneous	1,114	1,047
Total deferred credits and other long-term liabilities	1,011,869	1,067,619
COMMITMENTS AND CONTINGENCIES (Note 6)	'	'
TOTAL	$3,324,349	$3,274,065

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Condensed Consolidated Balance Sheets [Abstract]	'	'
Accounts receivable and unbilled revenue, allowance for doubtful accounts	$2,875	$1,982

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements Of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
CASH FLOWS FROM OPERATIONS:	'	'
Net income	$23,706	$21,661
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation and amortization	46,534	45,459
Amortization of regulatory assets	808	805
Deferred income taxes and investment tax credit adjustments - net	880	-1,827
Allowance for equity funds used during construction	-1,552	-663
Change in certain assets and liabilities:	'	'
Accounts receivable	-6,262	-8,919
Fuel, materials and supplies	10,860	-884
Income taxes receivable or payable	9,925	14,383
Financial transmission rights	2,931	1,501
Accounts payable and accrued expenses	-3,029	4,424
Accrued real estate and personal property taxes	4,299	4,776
Accrued interest	17,484	13,711
Pension and other postretirement benefit expenses	-54,862	-49,686
Short-term and long-term regulatory assets and liabilities	-13,587	13,316
Prepaids and other current assets	-8,955	-4,642
Other - net	220	1,196
Net cash provided by operating activities	29,400	54,611
CASH FLOWS FROM INVESTING ACTIVITIES:	'	'
Capital expenditures - utility	-41,153	-40,733
Grants under the American Recovery and Reinvestment Act of 2009	'	873
Cost of removal, net of salvage	-843	-1,480
Other	-1,260	-1,232
Net cash used in investing activities	-43,256	-42,572
CASH FLOWS FROM FINANCING ACTIVITIES:	'	'
Short-term debt borrowings	80,000	55,000
Short-term debt repayments	-20,000	-55,000
Dividends on common stock	-19,800	-15,400
Preferred dividends of subsidiary	-803	-803
Other	-21	-2
Net cash provided by (used in) financing activities	39,376	-16,205
Net change in cash and cash equivalents	25,520	-4,166
Cash and cash equivalents at beginning of period	19,067	18,487
Cash and cash equivalents at end of period	44,587	14,321
Cash paid during the period for:	'	'
Interest (net of amount capitalized)	8,417	12,390
Non-cash investing activities	'	'
Accruals for capital expenditures	$19,810	$18,823

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements Of Common Shareholder's Equity (Deficit) And Noncontrolling Interest (USD $)	Paid In Capital [Member]	Accumulated Deficit [Member]	Cumulative Preferred Stock Of Subsidiary [Member]	Total
In Thousands, unless otherwise specified
Beginning Balance at Dec. 31, 2012	$11,811	($15,030)	$59,784	($3,219)
Comprehensive Income attributable to common stock:	'	'	'	'
Net income applicable to common stock	'	20,858	'	20,858
Distributions to AES	'	-15,400	'	-15,400
Contributions from AES	156	'	'	156
Balance at Mar. 31, 2013	11,967	-9,572	59,784	2,395
Beginning Balance at Dec. 31, 2013	61,468	-13,694	59,784	47,774
Comprehensive Income attributable to common stock:	'	'	'	'
Net income applicable to common stock	'	22,903	'	22,903
Distributions to AES	'	-19,800	'	-19,800
Contributions from AES	147	'	'	147
Balance at Mar. 31, 2014	$61,615	($10,591)	$59,784	$51,024

Organization

Organization	3 Months Ended
	Mar. 31, 2014
Organization [Abstract]	'
Organization	'
	1. ORGANIZATION
	IPALCO Enterprises, Inc. (“IPALCO”) is a holding company incorporated under the laws of the state of Indiana. IPALCO is a wholly-owned subsidiary of The AES Corporation (“AES”). IPALCO was acquired by AES in March 2001. IPALCO owns all of the outstanding common stock of its subsidiaries. Substantially all of IPALCO’s business consists of the generation, transmission, distribution and sale of electric energy conducted through its principal subsidiary, Indianapolis Power & Light Company (“IPL”). IPL was incorporated under the laws of the state of Indiana in 1926. IPL has more than 470,000 retail customers in the city of Indianapolis and neighboring cities, towns and communities, and adjacent rural areas all within the state of Indiana, 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 design capability for winter and summer is 3,241 Megawatts (“MW”) and 3,123 MW, respectively.

Summary_Of_Significant_Account

Summary Of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2014
Summary Of Significant Accounting Policies [Abstract]	'
Summary Of Significant Accounting Policies	'
	2. Summary of significant accounting policies
	The accompanying Unaudited Condensed Consolidated Financial Statements (the “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 accounting principles generally accepted in the United States of America for interim financial information and in conjunction with the rules and regulations of the Securities and Exchange Commission. Accordingly, they do not include all of the disclosures required by accounting principles generally accepted in the United States of America 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 Annual Report on Form 10-K for the year ended December 31, 2013 (“2013 Form 10-K”) and should be read in conjunction therewith. Certain prior period amounts have been reclassified to conform to current year presentation.
	Use of Management Estimates
	The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America 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
	In April 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-08, “Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity,” effective for annual and interim periods beginning after December 15, 2014. ASU 2014-08 updates the definition of discontinued operations by limiting discontinued operations reporting to disposals of components of an entity that represent strategic shifts that have (or will have) a major effect on an entity’s operations and financial results. In addition, an entity will be required to expand disclosures for discontinued operations by providing more information about the assets, liabilities, revenues and expenses of discontinued operations both on the face of the financial statements and in the notes to the financial statements. For the disposal of an individually significant component of an entity that does not qualify for discontinued operations reporting, such entity will be required to disclose the pretax profit or loss of the component in the notes to the financial statements. This new rule is not expected to have a material effect on our overall results of operations, financial position or cash flows.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2014
Fair Value Measurements [Abstract]	'
Fair Value Measurements	'
	3. FAIR VALUE MEASUREMENTS
	Fair Value Hierarchy
	FASB Accounting Standards Codification (“ASC”) 820 defined and established a framework for measuring fair value and expanded 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.
	Level 3 - unobservable inputs reflecting management’s own assumptions about the inputs used in pricing the asset or liability.
	As of March 31, 2014 and December 31, 2013, all of IPALCO’s financial assets or liabilities adjusted to fair value on a recurring basis (excluding pension assets – see Note 5, “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 March 31, 2014 and December 31, 2013, 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 $5.4 million as of March 31, 2014 and December 31, 2013, 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. 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 for the periods ending:
		31-Mar-14				31-Dec-13
		Face Value		Fair Value		Face Value		Fair Value
		(In Millions)
	Fixed-rate	$	1,825.3	$	2,013.9	$	1,825.3	$	1,941.8
	Variable-rate		110.0		110.0		50.0		50.0
	Total indebtedness	$	1,935.3	$	2,123.9	$	1,875.3	$	1,991.8
	The difference between the face value and the carrying value of this indebtedness represents unamortized discounts of $3.4 million and $3.6 million at March 31, 2014 and December 31, 2013, respectively.

Indebtedness

Indebtedness	3 Months Ended
	Mar. 31, 2014
Indebtedness [Abstract]	'
Indebtedness	'
	4. INDEBTEDNESS
	Line of Credit
	On May 6, 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 for letters of credit, working capital and general corporate purposes which matures on May 6, 2019 and bears interest at variable rates as defined 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 March 31, 2014 and December 31, 2013, IPL had $60.0 million and $0.0 million of outstanding borrowings on the committed line of credit, respectively.

Pension_And_Other_Postretireme

Pension And Other Postretirement Benefits	3 Months Ended
	Mar. 31, 2014
Pension And Other Postretirement Benefits [Abstract]	'
Pension And Other Postretirement Benefits	'
	5. PENSION AND OTHER POSTRETIREMENT BENEFITS
	The following table (in thousands) presents information for the three months ended March 31, 2014, relating to the Employees’ Retirement Plan of Indianapolis Power & Light Company and the Supplemental Retirement Plan of Indianapolis Power & Light Company (the “Pension Plans”):
	Net funded status of plans:
	Net funded status at December 31, 2013, before tax adjustments	$	-89,127
	Net benefit cost components reflected in net funded status during first quarter:
	Service cost		-1,808
	Interest cost		-7,788
	Expected return on assets		10,473
	Employer contributions during quarter		54,100
	Net funded status at March 31, 2014, before tax adjustments	$	-34,150
	Regulatory assets related to pensions(1):
	Regulatory assets at December 31, 2013, before tax adjustments	$	191,783
	Amount reclassified through net benefit cost:
	Amortization of prior service cost		-1,213
	Amortization of net actuarial loss		-2,429
	Regulatory assets at March 31, 2014, before tax adjustments	$	188,141
		-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,
		March 31,
		2014		2013
		(In Thousands)
	Components of net periodic benefit cost:
	Service cost	$	1,808	$	2,299
	Interest cost		7,788		7,091
	Expected return on plan assets		-10,473		-9,572
	Amortization of prior service cost		1,213		1,229
	Amortization of actuarial loss		2,429		5,684
	Net periodic benefit cost	$	2,765	$	6,731
	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 obligation were not material to the Financial Statements in the periods covered by this report.

Commitments_And_Contingencies

Commitments And Contingencies	3 Months Ended
	Mar. 31, 2014
Commitments And Contingencies [Abstract]	'
Commitments And Contingencies	'
	6. 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, or 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 and 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 Notice of Violation (“NOV”) and Finding of Violation from the U.S. Environmental Protection Agency (“EPA”) pursuant to the U.S. Clean Air Act (“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 Prevention of Significant Deterioration and nonattainment New Source Review requirements under the CAA. Since receiving the letter, IPL management has met with 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	3 Months Ended
	Mar. 31, 2014
Income Taxes [Abstract]	'
Income Taxes	'
	7. INCOME TAXES
	On March 25, 2014, the State of Indiana enacted Senate Bill 001, which phases in an additional 1.6% reduction to the state corporate income tax rate that was initially being reduced by 2% in accordance with Indiana Code 6-3-2-1. While the statutory state income tax rate remains at 7.25% for the calendar year 2014, the deferred tax balances were adjusted according to the anticipated reversal of temporary differences. The change in required deferred taxes on plant and plant-related temporary differences resulted in a reduction to the associated regulatory asset of $5.6 million. The change in required deferred taxes on non-property-related temporary differences which are not probable to cause a reduction in future base customer rates resulted in a tax benefit of $1.2 million.
	IPALCO’s effective combined state and federal income tax rate was 32.1% for the three months ended March 31, 2014, as compared to 37.6% for the three months ended March 31, 2013. The decrease in the effective tax rate was primarily the result of the $1.2 million state income tax benefit described above and an increase in the allowance for equity funds used during construction in 2014.

Related_Party_Transactions

Related Party Transactions	3 Months Ended
	Mar. 31, 2014
Related Party Transactions [Abstract]	'
Related Party Transactions	'
	8. RELATED PARTY TRANSACTIONS
	In December 2013, an agreement was signed, effective January 1, 2014, whereby AES U.S. Services, LLC (the “Service Company”) is to provide services including accounting, legal, human resources, information technology and other corporate services on behalf of companies that are part of the AES U.S. Strategic Business Unit (“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 during the first three months of 2014 on behalf of IPALCO were $8.4 million. As of March 31, 2014, IPALCO had a total receivable balance from the Service Company of $1.0 million and a total payable balance to the Service Company of $8.4 million. IPALCO also had a prepaid balance of $3.7 million to the Service Company as of March 31, 2014.

Segment_Information

Segment Information	3 Months Ended
	Mar. 31, 2014
Segment Information [Abstract]	'
Segment Information	'
	9. SEGMENT INFORMATION
	Operating segments are components of an enterprise 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 segments are utility and nonutility. The nonutility category primarily includes the $400 million of 7.25% Senior Secured Notes due April 1, 2016, and the $400 million of 5.00% Senior Secured Notes due May 1, 2018; approximately $6.4 million and $6.9 million of nonutility cash and cash equivalents, as of March 31, 2014 and December 31, 2013, respectively; short-term and long-term nonutility investments of $5.0 million at March 31, 2014 and December 31, 2013, respectively; and income taxes and interest related to those items. Nonutility assets represented less than 1% of IPALCO’s total assets as of March 31, 2014 and December 31, 2013. Net income for the utility segment was $31.4 million and $29.1 million for the three-month periods ended March 31, 2014 and 2013, respectively. The accounting policies of the identified segments 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_Account1

Summary Of Significant Accounting Policies (Policy)	3 Months Ended
	Mar. 31, 2014
Summary Of Significant Accounting Policies [Abstract]	'
Use Of Management Estimates	'
	Use of Management Estimates
	The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America 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
	In April 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-08, “Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity,” effective for annual and interim periods beginning after December 15, 2014. ASU 2014-08 updates the definition of discontinued operations by limiting discontinued operations reporting to disposals of components of an entity that represent strategic shifts that have (or will have) a major effect on an entity’s operations and financial results. In addition, an entity will be required to expand disclosures for discontinued operations by providing more information about the assets, liabilities, revenues and expenses of discontinued operations both on the face of the financial statements and in the notes to the financial statements. For the disposal of an individually significant component of an entity that does not qualify for discontinued operations reporting, such entity will be required to disclose the pretax profit or loss of the component in the notes to the financial statements. This new rule is not expected to have a material effect on our overall results of operations, financial position or cash flows.

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2014
Fair Value Measurements [Abstract]	'
Schedule Of Face And Fair Value Of Debt	'
		31-Mar-14				31-Dec-13
		Face Value		Fair Value		Face Value		Fair Value
		(In Millions)
	Fixed-rate	$	1,825.3	$	2,013.9	$	1,825.3	$	1,941.8
	Variable-rate		110.0		110.0		50.0		50.0
	Total indebtedness	$	1,935.3	$	2,123.9	$	1,875.3	$	1,991.8

Pension_And_Other_Postretireme1

Pension And Other Postretirement Benefits (Tables)	3 Months Ended
	Mar. 31, 2014
Pension And Other Postretirement Benefits [Abstract]	'
Schedule Of Defined Benefit Plans Disclosures	'
	Net funded status of plans:
	Net funded status at December 31, 2013, before tax adjustments	$	-89,127
	Net benefit cost components reflected in net funded status during first quarter:
	Service cost		-1,808
	Interest cost		-7,788
	Expected return on assets		10,473
	Employer contributions during quarter		54,100
	Net funded status at March 31, 2014, before tax adjustments	$	-34,150
	Regulatory assets related to pensions(1):
	Regulatory assets at December 31, 2013, before tax adjustments	$	191,783
	Amount reclassified through net benefit cost:
	Amortization of prior service cost		-1,213
	Amortization of net actuarial loss		-2,429
	Regulatory assets at March 31, 2014, before tax adjustments	$	188,141
	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	'
		For the Three Months Ended,
		March 31,
		2014		2013
		(In Thousands)
	Components of net periodic benefit cost:
	Service cost	$	1,808	$	2,299
	Interest cost		7,788		7,091
	Expected return on plan assets		-10,473		-9,572
	Amortization of prior service cost		1,213		1,229
	Amortization of actuarial loss		2,429		5,684
	Net periodic benefit cost	$	2,765	$	6,731

Organization_Details

Organization (Details)	3 Months Ended
	Mar. 31, 2014
	MW
	item
	customer
Organization [Abstract]	'
Number of customers	470,000
Number of coal fired plants	2
Number of combustion coal and gas fired plants	1
Number of combustion turbines	2
Electric generation capability for winter, megawatts	3,241
Electric generation capability for summer, megawatts	3,123

Fair_Value_Measurements_Narrat

Fair Value Measurements (Narrative) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Fair Value Measurements [Abstract]	'	'
Cash and cash equivalents	$5.40	$5.40
Unamortized debt discount	$3.40	$3.60

Fair_Value_Measurements_Schedu

Fair Value Measurements (Schedule Of Face And Fair Value Of Debt) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Debt Instrument [Line Items]	'	'
Face Value	$1,935.30	$1,875.30
Fair Value	2,123.90	1,991.80
Fixed Rate [Member]	'	'
Debt Instrument [Line Items]	'	'
Face Value	1,825.30	1,825.30
Fair Value	2,013.90	1,941.80
Variable Rate [Member]	'	'
Debt Instrument [Line Items]	'	'
Face Value	110	50
Fair Value	$110	$50

Indebtedness_Details

Indebtedness (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013	6-May-14	6-May-14
In Millions, unless otherwise specified			Subsequent Event [Member]	Subsequent Event [Member]
				Letter of Credit [Member]
Debt Instrument [Line Items]	'	'	'	'
Line of credit facility, term	'	'	'5 years	'
Line of credit, amount outstanding	$60	$0	'	'
Maximum borrowing capacity	'	'	250	'
Line of credit facility, accordion feature	'	'	$150	'
Debt instrument, maturity date	'	'	'	6-May-19

Pension_And_Other_Postretireme2

Pension And Other Postretirement Benefits (Other Post Retirement Benefits) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Pension And Other Postretirement Benefits [Abstract]	'		'
Net funded status before tax adjustments	($89,127)		'
Service Cost	-1,808		-2,299
Interest Cost	-7,788		-7,091
Expected return on assets	10,473		9,572
Employer contributions	54,100		'
Net funded status before tax adjustments	-34,150		'
Regulatory assets (liabilities) before tax adjustments	191,783	[1]	'
Amortization of prior service cost	-1,213	[1]	-1,229
Amortization of net actuarial loss	-2,429	[1]	-5,684
Regulatory assets before tax adjustments	$188,141	[1]	'
[1]	Amounts that would otherwise be charged/credited to Accumulated Other Comprehensive Income or Loss upon application of ASC 715, bCompensation - Retirement Benefits,b 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_And_Other_Postretireme3

Pension And Other Postretirement Benefits (Net Periodic Benefit Cost) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Pension And Other Postretirement Benefits [Abstract]	'		'
Service Cost	$1,808		$2,299
Interest Cost	7,788		7,091
Expected return on assets	-10,473		-9,572
Amortization of prior service cost	1,213	[1]	1,229
Amortization of actuarial loss	2,429	[1]	5,684
Net periodic benefit cost	$2,765		$6,731
[1]	Amounts that would otherwise be charged/credited to Accumulated Other Comprehensive Income or Loss upon application of ASC 715, bCompensation - Retirement Benefits,b 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

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Income Taxes [Abstract]	'	'
Additional reduction to the state corporate income tax rate	1.60%	'
Reduction to the state corporate income tax rate	2.00%	'
Decrease in deferred taxes	$5.60	'
Tax benefit from temporary differences	$1.20	'
Statutory state income tax rate	7.25%	'
State and federal income tax rate	32.10%	37.60%

Related_Party_Transactions_Det

Related Party Transactions (Details) (Service Company [Member], USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014
Service Company [Member]	'
Costs incurred by related party	$8.40
Receivable balance from related party	1
Payable balance to related party	8.4
Prepaid balance to related party	$3.70

Segment_Information_Details

Segment Information (Details) (USD $)	3 Months Ended			3 Months Ended					12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Dec. 31, 2013
				7.25% Senior Secured Notes [Member]	5.00% Senior Secured Notes [Member]	Utility Segment [Member]	Utility Segment [Member]	Maximum [Member]	Maximum [Member]
Debt Instrument [Line Items]	'	'	'	'	'	'	'	'	'
Senior secured note	'	'	'	$400,000,000	$400,000,000	'	'	'	'
Senior notes, interest rate, percentage	'	'	'	7.25%	5.00%	'	'	'	'
Debt instrument, maturity date	'	'	'	1-Apr-16	1-May-18	'	'	'	'
Cash	6,400,000	'	6,900,000	'	'	'	'	'	'
Long-term nonutility investments	5,000,000	'	5,000,000	'	'	'	'	'	'
Nonutility assets representation rate, percentage	'	'	'	'	'	'	'	1.00%	1.00%
Net income	$23,706,000	$21,661,000	'	'	'	$31,400,000	$29,100,000	'	'