Debt Covenant, Debt to EBITDA Ratio, Maximum

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- Definition

Debt Covenant, Interest Coverage Ratio, Minimum

+ References

No definition available.

+ Details

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- Definition

Debt Covenant, Leverage Ratio, Maximum

+ References

No definition available.

+ Details

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- Definition

Debt Covenant, Total Debt to Total Capitalization Ratio, Maximum

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Debt Covenant, Debt to EBITDA Ratio, Number of Quarters

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Debt Covenant, EBITDA to Interest Calculation, Number of Quarters

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Number of Financial Covenants

+ References

No definition available.

+ Details

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- Definition

Debt to EBITDA Ratio

+ References

No definition available.

+ Details

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- Definition

Interest Coverage Ratio

+ References

No definition available.

+ Details

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- Definition

Letter Of Credit Sublimit

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Line of Credit Facility, Additional Borrowing Capacity

+ References

No definition available.

+ Details

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- Definition

After separation required compliance with the financial covenant, shall be suspended from 1/1/17 to 12/31/17 if during such time DP&L's LT indebtedness (as determined by the PUCO) is less than or equal to $750.0 million.

+ References

No definition available.

+ Details

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- Definition

Make Whole Premium

+ References

No definition available.

+ Details

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- Definition

Total Debt to Total Capitalization Ratio

+ References

No definition available.

+ Details

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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- Definition

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

+ References

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-Name Accounting Standards Codification
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+ Details

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- Definition

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

+ References

+ Details

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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.

+ Details

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- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

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Balance Type:	debit
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- 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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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+ 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

+ Details

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- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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-Publisher FASB
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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Debt (Narrative) (Details) $ in Millions					3 Months Ended	9 Months Ended		12 Months Ended
Debt (Narrative) (Details) $ in Millions	Jun. 06, 2019 USD ($)	May 07, 2019 USD ($)	Apr. 17, 2019 USD ($)	Apr. 04, 2019 USD ($)	Mar. 31, 2019 USD ($)	Sep. 30, 2019 USD ($) fiscal_quarter debt_covenant	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Apr. 30, 2018 USD ($)	Mar. 30, 2018 USD ($)	Aug. 03, 2015 USD ($)
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity						$ 125.0
Letter Of Credit Sublimit						75.0
Line of Credit Facility, Additional Borrowing Capacity						50.0
Long-term Line of Credit								$ 0.0
Proceeds from Issuance of Long-term Debt						821.7	$ 0.0
Retirement of long-term debt						$ 978.0	239.4
Debt Covenant, Debt to EBITDA Ratio, Maximum								7.00
Debt to EBITDA Ratio						5.68
Debt Covenant, Leverage Ratio, Maximum						0.67
Debt Covenant, Interest Coverage Ratio, Minimum						2.50		2.25
Interest Coverage Ratio						2.99
THE DAYTON POWER AND LIGHT COMPANY [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity						$ 175.0
Letter Of Credit Sublimit						75.0
Line of Credit Facility, Additional Borrowing Capacity						100.0
Long-term Line of Credit								$ 0.0
Proceeds from Issuance of Long-term Debt						422.3	0.0
Retirement of long-term debt						$ 436.1	$ 63.3
Long Term Indebtedness, Less than or Equal to									$ 750.0
Debt Covenant, Interest Coverage Ratio, Minimum						2.50
3.95% Senior Notes due 2049 [Member] \| THE DAYTON POWER AND LIGHT COMPANY [Member]
Debt Instrument [Line Items]
Extinguishment of Debt, Amount	$ 435.0
Long-term Debt, Gross						$ 425.0
Proceeds from Issuance of Long-term Debt	$ 425.0
Debt instrument interest percentage						3.95%
Senior unsecured due in October 2019 - 6.75% [Member]
Debt Instrument [Line Items]
Extinguishment of Debt, Amount				$ 99.0	$ 101.0
Long-term Debt, Gross								99.0			$ 200.0
Make Whole Premium				$ 1.5						$ 5.1
Debt instrument interest percentage					6.75%	6.75%
Variable Rate Notes Backed by Term Loan and First Mortgage Bonds [Member]
Debt Instrument [Line Items]
Extinguishment of Debt, Amount					$ 60.0
Variable Rate Notes Backed by Term Loan and First Mortgage Bonds [Member] \| THE DAYTON POWER AND LIGHT COMPANY [Member]
Debt Instrument [Line Items]
Extinguishment of Debt, Amount						$ 60.0
Long-term Debt, Gross						140.0		140.0
Debt Instrument, Face Amount												$ 200.0
Bank term loan due in July 2020 - rates from: 2.44% - 2.45% [Member]
Debt Instrument [Line Items]
Extinguishment of Debt, Amount					$ 70.0
Term Loan Maturing 2022 [Member] \| THE DAYTON POWER AND LIGHT COMPANY [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross						$ 0.0		436.1
Revolving Credit Agreement and Standby Letters of Credit [Member]
Debt Instrument [Line Items]
Number of financial covenants \| debt_covenant						2
Revolving Credit Agreement and Standby Letters of Credit [Member] \| THE DAYTON POWER AND LIGHT COMPANY [Member]
Debt Instrument [Line Items]
Number of financial covenants \| debt_covenant						2
Number of prior quarters included in EBITDA to interest calculation \| fiscal_quarter						4
Debt Covenant, Interest Coverage Ratio, Minimum						2.50
Interest Coverage Ratio						9.36
First Mortgage Bonds [Member] \| THE DAYTON POWER AND LIGHT COMPANY [Member]
Debt Instrument [Line Items]
Debt Covenant, Total Debt to Total Capitalization Ratio, Maximum						0.65			0.75
DPL Revolving Credit Agreement and Term Loan Maturing July 2020 [Member]
Debt Instrument [Line Items]
Number of financial covenants \| debt_covenant						2
Number of prior quarters included in EBITDA to interest calculation \| fiscal_quarter						4
Number of prior quarters included in debt to EBITDA ratio \| fiscal_quarter						4
Ten Year Senior Unsecured Bonds At435 Maturing At April152029 [Member]
Debt Instrument [Line Items]
Proceeds from Issuance of Long-term Debt			$ 400.0
Debt instrument interest percentage			4.35%
Ten Year Senior Unsecured Notes At725 Maturing At October152021 [Member]
Debt Instrument [Line Items]
Extinguishment of Debt, Amount		$ 400.0
Long-term Debt, Gross		380.0				$ 380.0		$ 780.0
Make Whole Premium		$ 41.4
Debt instrument interest percentage					7.25%	7.25%
Revolving Credit Facility [Member] \| THE DAYTON POWER AND LIGHT COMPANY [Member]
Debt Instrument [Line Items]
Debt Covenant, Total Debt to Total Capitalization Ratio, Maximum						0.67
Total Debt to Total Capitalization Ratio						0.58