Debt Instrument, Ratio of Principal to Public Offering Price

No definition available.

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- Definition

Line of Credit Facility, Accordion Feature

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Line of Credit Facility, Term

+ References

No definition available.

+ Details

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

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-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(2))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 50

-Section 40

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12317-112629

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-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

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-Paragraph 28

-Subparagraph (b)

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Period Type:	duration

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

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-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19,20)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Period Type:	instant

- Definition

The cash inflow from amounts received from issuance of long-term debt that is wholly or partially secured by collateral. Excludes proceeds from tax exempt secured debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (b)

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

+ Details

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- Definition

Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

+ References

+ Details

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- Details

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Indebtedness (Narrative) (Details) - USD ($)	1 Months Ended			3 Months Ended		9 Months Ended
Indebtedness (Narrative) (Details) - USD ($)	Sep. 30, 2015	Jun. 30, 2015	May. 31, 2014	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Jul. 31, 2015	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, outstanding borrowings	$ 0			$ 0		$ 0			$ 0
First mortgage bonds issued in period	2,270,300,000			2,270,300,000		2,270,300,000			2,005,300,000
Short-term debt	131,850,000			131,850,000		131,850,000			0
Loss on early extinguishment of debt				2,728,000	$ 0	$ 22,051,000	$ 0
Letter of Credit [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date						Oct. 16, 2020
Indianapolis Power And Light Company [Member]
Debt Instrument [Line Items]
First mortgage bonds	1,411,060,000			1,411,060,000		$ 1,411,060,000			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%
4.70% IPL first mortgage bond [Member] \| Indianapolis Power And Light Company [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date						Sep. 01, 2045
First mortgage bonds	$ 260,000,000			$ 260,000,000		$ 260,000,000			$ 0
Debt instrument, stated interest rate	4.70%			4.70%		4.70%
First mortgage bonds issued in period	$ 260,000,000			$ 260,000,000		$ 260,000,000
Proceeds from issuance of 2020 IPALCO notes	$ 255,600,000
3.45% Senior Secured Notes [Member] \| Ipalco Enterprises, Inc. [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date						Jul. 01, 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
7.25% Senior Secured Notes [Member] \| Ipalco Enterprises, Inc. [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date						Apr. 01, 2016
Debt instrument, stated interest rate	7.25%			7.25%		7.25%
Extinguishment of 2016 IPALCO notes		366,500,000
Short-term debt								$ 33,500,000
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		$ 22,100,000