Debt Instrument, Ratio of Principal to Public Offering Price

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- Definition

Gain (Loss) on Early Extinguishment of Debt

+ References

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- Definition

Line of Credit Facility, Accordion Feature

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- Definition

Line of Credit Facility, Term

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- Definition

Maximum Authorized Amount Of Debt To Be Issued

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- Definition

Maximum Authorized Amount Of Debt To Be Refinanced

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No definition available.

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- Definition

Preferred Stock Issuable in Lieu of Portion of Maximum Authorized Amount of Debt

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No definition available.

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- Definition

Secured Debt Gross

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No definition available.

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- Definition

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

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- Definition

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

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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.

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

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Gross amount of debt extinguished.

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No definition available.

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

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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

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest.

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- Definition

The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

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The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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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.

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The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt.

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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.

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For the form of debt having an initial term of less than one year or less than the normal operating cycle, if longer, the maximum amount borrowed at any time during the period.

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No definition available.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer).

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Carrying value as of the balance sheet date of the portion of long-term, uncollateralized debt obligations due within one year or the normal operating cycle, if longer.

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Debt (Narrative) (Details) - USD ($)					1 Months Ended	12 Months Ended
Debt (Narrative) (Details) - USD ($)	Nov. 14, 2018	Sep. 21, 2017	Aug. 22, 2017	Aug. 01, 2017	May 31, 2014	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Sep. 30, 2019	Oct. 31, 2018
Debt Instrument [Line Items]
Secured debt gross						$ 2,678,800,000
Aggregate principal amount						2,678,800,000	$ 2,678,800,000
Net proceeds from debt issuance						0	169,936,000	$ 404,633,000
Gain (Loss) on Early Extinguishment of Debt		$ 8,900,000
Line of credit facility, term					5 years
Ratio of principal to public offering price			99.901%
Proceeds from Issuance of Debt			$ 399,300,000
Long-term debt						2,651,629,000	2,649,064,000
Loss on early extinguishment of debt		(8,900,000)				0	0	8,875,000
Maximum borrowing capacity					$ 250,000,000	500,000,000
Line of Credit Facility, Remaining Borrowing Capacity						250,000,000.0
Maximum amount of short-term indebtedness outstanding						500,000,000
Authorized amount of debt to be issued						350,000,000
Authorized amount of debt to be refinanced						185,000,000.0
Preferred Stock Issuable in Lieu of Portion of Maximum Authorized Amount of Debt						65,000,000
Letter of Credit [Member]
Debt Instrument [Line Items]
Line of credit facility, accordion feature					$ 150,000,000
Indianapolis Power And Light Company
Debt Instrument [Line Items]
Secured debt gross						1,803,800,000
Aggregate principal amount						1,803,800,000	1,803,800,000
Unsecured Debt						89,886,000	89,771,000
Unsecured Debt, Current						90,000,000
Net proceeds from debt issuance						0	104,936,000	0
Line of credit facility, term					5 years
Long-term debt						1,780,901,000	1,780,184,000
Maximum borrowing capacity					$ 250,000,000	500,000,000
Line of Credit Facility, Remaining Borrowing Capacity						250,000,000.0
Maximum amount of short-term indebtedness outstanding						500,000,000
Authorized amount of debt to be issued						350,000,000
Authorized amount of debt to be refinanced						185,000,000.0
Preferred Stock Issuable in Lieu of Portion of Maximum Authorized Amount of Debt						65,000,000
First mortgage bonds						1,691,015,000	1,690,413,000
Indianapolis Power And Light Company \| Letter of Credit [Member]
Debt Instrument [Line Items]
Line of credit facility, accordion feature					$ 150,000,000
Ipalco Enterprises, Inc. [Member]
Debt Instrument [Line Items]
Net proceeds from debt issuance						0	65,000,000	404,633,000
Early tender premium						0	0	(8,875,000)
Refunded aggregate principal		$ 400,000,000
Long-term debt						870,728,000	868,880,000
Loss on early extinguishment of debt						$ 0	0	$ 8,875,000
First Mortgage Bond Seven [Member] \| Indianapolis Power And Light Company
Debt Instrument [Line Items]
Debt instrument, stated interest rate						3.875%
Debt instrument, maturity date						Aug. 01, 2021
First mortgage bonds						$ 55,000,000	55,000,000
First Mortgage Bonds [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest rate				5.40%
Repayments of Secured Debt				$ 24,700,000
First Mortgage Bonds [Member] \| Indianapolis Power And Light Company
Debt Instrument [Line Items]
Secured debt gross						$ 1,713,800,000
FMB Twenty [Member] \| Indianapolis Power And Light Company
Debt Instrument [Line Items]
Debt instrument, stated interest rate						4.05%
Debt instrument, maturity date						May 01, 2046
First mortgage bonds						$ 350,000,000	350,000,000
First Mortgage Bond Nine [Member] \| Indianapolis Power And Light Company
Debt Instrument [Line Items]
Debt instrument, stated interest rate						3.125%
Debt instrument, maturity date						Dec. 01, 2024
First mortgage bonds						$ 40,000,000	40,000,000
First Mortgage Bond Five [Member] \| Indianapolis Power And Light Company
Debt Instrument [Line Items]
Debt instrument, stated interest rate						5.40%
Repayments of Secured Debt			24,700,000
Environmental Facilities Refunding Revenue Notes, Series 2015A [Member] \| Indianapolis Power And Light Company
Debt Instrument [Line Items]
Unsecured Debt						$ 90,000,000
Environmental Facilities Refunding Revenue Notes, Series 2015A [Member] \| Indianapolis Power And Light Company
Debt Instrument [Line Items]
Unsecured Debt						$ 30,000,000	30,000,000
Debt instrument, maturity date						Dec. 22, 2020
Environmental Facilities Refunding Revenue Notes, Series 2015B [Member] \| Indianapolis Power And Light Company
Debt Instrument [Line Items]
Unsecured Debt						$ 60,000,000	60,000,000
Debt instrument, maturity date						Dec. 22, 2020
3.45% Senior Secured Notes [Member] \| Ipalco Enterprises, Inc. [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest rate						3.45%			3.45%
Long-term debt						$ 405,000,000	405,000,000		$ 405,000,000
Debt instrument, maturity date						Jul. 01, 2020
First Mortgage Bond 4.65% Due June 2043 [Member] \| Indianapolis Power And Light Company
Debt Instrument [Line Items]
Debt instrument, stated interest rate						4.65%
Debt instrument, maturity date						Jun. 01, 2043
First mortgage bonds						$ 170,000,000	170,000,000
First Mortgage Bond 4.70% Due September 2045 [Member] \| Indianapolis Power And Light Company
Debt Instrument [Line Items]
Debt instrument, stated interest rate						4.50%
Debt instrument, maturity date						Jun. 01, 2044
First mortgage bonds						$ 130,000,000	130,000,000
7.25% Senior Secured Notes [Member] \| Ipalco Enterprises, Inc. [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest rate						7.25%
First Mortgage Bond Nineteen [Member] \| Indianapolis Power And Light Company
Debt Instrument [Line Items]
Debt instrument, stated interest rate						4.70%
Debt instrument, maturity date						Sep. 01, 2045
First mortgage bonds						$ 260,000,000	260,000,000
Three Point Seven Zero Percent Senior Secured Notes [Domain] \| Ipalco Enterprises, Inc. [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest rate						3.70%
Long-term debt			$ 405,000,000			$ 405,000,000	405,000,000
Debt instrument, maturity date						Sep. 01, 2024
FMB Twenty - one [Member] \| Indianapolis Power And Light Company
Debt Instrument [Line Items]
Aggregate principal amount	$ 105,000,000
Debt instrument, stated interest rate	4.875%					4.875%
Proceeds from Issuance of Secured Debt	$ 103,500,000
Debt instrument, maturity date						Nov. 01, 2048
First mortgage bonds						$ 105,000,000	105,000,000
Bank Term Loan Maturing July 2020 [Member] \| Ipalco Enterprises, Inc. [Member]
Debt Instrument [Line Items]
Long-term debt						$ 65,000,000	65,000,000		$ 65,000,000	$ 65,000,000
Debt instrument, maturity date						Jul. 01, 2020
First Mortgage Bond Eight [Member] \| Indianapolis Power And Light Company
Debt Instrument [Line Items]
Debt instrument, stated interest rate						3.875%
Debt instrument, maturity date						Aug. 01, 2021
First mortgage bonds						$ 40,000,000	40,000,000
First Mortgage Bond Thirteen [Member] \| Indianapolis Power And Light Company
Debt Instrument [Line Items]
Debt instrument, stated interest rate						6.60%
Debt instrument, maturity date						Jan. 01, 2034
First mortgage bonds						$ 100,000,000	100,000,000
First Mortgage Bond Fourteen [Member] \| Indianapolis Power And Light Company
Debt Instrument [Line Items]
Debt instrument, stated interest rate						6.05%
Debt instrument, maturity date						Oct. 01, 2036
First mortgage bonds						$ 158,800,000	158,800,000
First Mortgage Bond Fifteen [Member] \| Indianapolis Power And Light Company
Debt Instrument [Line Items]
Debt instrument, stated interest rate						6.60%
Debt instrument, maturity date						Jun. 01, 2037
First mortgage bonds						$ 165,000,000	165,000,000
First Mortgage Bond Sixteen [Member] \| Indianapolis Power And Light Company
Debt Instrument [Line Items]
Debt instrument, stated interest rate						4.875%
Debt instrument, maturity date						Nov. 01, 2041
First mortgage bonds						$ 140,000,000	$ 140,000,000