Debt Covenant, Interest Coverage Ratio, Minimum

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- Definition

Debt Instrument, Debt Covenant, EBITDA to Interest Expense, EBITDA Minimum

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Starting with the quarter ended September 30, 2021, the borrowing limit will be reduced by $5.0 million per quarter should DPL’s Total Debt to EBITDA ratio calculated for the period of four consecutive quarters exceed 7.00 to 1.00.

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Long Term Debt Maturities Repayments Of Principal, Total

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Total Long-term Debt At Subsidiary With Purchase Accounting Adjustments

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Total Maturities Before Unamortized Adjustments

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- Definition

Unamortized adjustments to market value from purchase accounting

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- Definition

Unamortized Deferred Financing Costs

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Unamortized Deferred Financing Costs, Consolidated

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Unamortized Deferred Financing Costs (Subsidiary)

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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.

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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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No definition available.

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Amount, after accumulated amortization, of debt discount.

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- Definition

Amount, after accumulated amortization, of debt discount (premium).

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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.

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Amount of long-term debt and lease obligation, including portion classified as current.

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No definition available.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. 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 long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts 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.

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Debt (Long-term Debt) (Details) $ in Millions				12 Months Ended
Debt (Long-term Debt) (Details) $ in Millions	Dec. 31, 2022 USD ($)	Sep. 30, 2022 USD ($)	Jun. 01, 2020	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	May 07, 2019 USD ($)
Debt Instrument [Line Items]
Long-Term Debt, Maturity, Year One				$ 0.2
Unamortized Deferred Financing Costs				(10.2)	$ (5.9)
Debt Instrument, Unamortized Discount (Premium), Net				(0.9)	(1.0)
Total long-term debt at subsidiary				574.1	574.4
Less: current portion				(0.2)	(139.8)
Long-term debt, net of current portion				1,393.4	1,223.3
Long-Term Debt, Maturity, Year Two				0.2
Long-Term Debt, Maturity, Year Three				0.2
Long-Term Debt, Maturity, Year Four				0.2
Long-Term Debt, Maturity, Year Five				415.2
Long-Term Debt, Maturity, after Year Five				997.0
Total Maturities Before Unamortized Adjustments				1,413.0
Unamortized adjustments to market value from purchase accounting				3.5
Unamortized Deferred Financing Costs, Consolidated				(15.9)
Long Term Debt Maturities Repayments Of Principal, Total				1,393.6
Long-term Line of Credit				$ 80.0	104.0
Debt Covenant, Interest Coverage Ratio, Minimum			2.25	1.70
Debt Instrument, Debt Covenant, EBITDA to Interest Expense, EBITDA Minimum				$ 125.0
Line of Credit Facility, quarterly borrowing limit reduction				5.0
Forecast [Member]
Debt Instrument [Line Items]
Debt Covenant, Interest Coverage Ratio, Minimum	2.00	1.75
Debt Instrument, Debt Covenant, EBITDA to Interest Expense, EBITDA Minimum	$ 150.0	$ 130.0
THE DAYTON POWER AND LIGHT COMPANY [Member]
Debt Instrument [Line Items]
Long-Term Debt, Maturity, Year One				0.2
Unamortized Deferred Financing Costs					(5.4)
Unamortized Deferred Financing Costs (Subsidiary)				(5.7)	(5.4)
Debt Instrument, Unamortized Discount				(2.6)	(2.7)
Debt Instrument, Unamortized Discount (Premium), Net				(2.6)	(2.7)
Less: current portion				(0.2)	(139.8)
Long-term debt, net of current portion				573.9	434.6
Long-Term Debt, Maturity, Year Two				0.2
Long-Term Debt, Maturity, Year Three				0.2
Long-Term Debt, Maturity, Year Four				0.2
Long-Term Debt, Maturity, Year Five				0.2
Long-Term Debt, Maturity, after Year Five				581.4
Total Maturities Before Unamortized Adjustments				582.4
Unamortized Deferred Financing Costs, Consolidated				(5.7)
Long Term Debt Maturities Repayments Of Principal, Total				574.1
Long-term Line of Credit				20.0	40.0
3.95% Senior Notes due 2049 [Member] \| THE DAYTON POWER AND LIGHT COMPANY [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross				$ 425.0
Debt instrument interest percentage				3.95%
Ten Year Senior Unsecured Bonds At 435 Maturing At April 15 2029 [Member]
Debt Instrument [Line Items]
Debt instrument interest percentage				4.35%
Tax-exempt First Mortgage Bonds - rates from: 2.49% - 2.93% (a) and 1.29% - 1.42% (b)
Debt Instrument [Line Items]
Long-term Debt, Gross					140.0
Tax-exempt First Mortgage Bonds - rates from: 2.49% - 2.93% (a) and 1.29% - 1.42% (b) \| THE DAYTON POWER AND LIGHT COMPANY [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross					140.0
Two Point Four Nine to Two Point Nine Three and One Point Two Nine to One Point Four Two Bonds Maturing In Two Thousand Twenty [Member] [Domain]
Debt Instrument [Line Items]
Long-term Debt, Gross				$ 0.0	140.0
Two Point Four Nine to Two Point Nine Three and One Point Two Nine to One Point Four Two Bonds Maturing In Two Thousand Twenty [Member] [Domain] \| THE DAYTON POWER AND LIGHT COMPANY [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross				0.0	140.0
U.S. Government note maturing in 2061 - 4.20% [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross				17.4	17.5
U.S. Government note maturing in 2061 - 4.20% [Member] \| THE DAYTON POWER AND LIGHT COMPANY [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross				$ 17.4	17.5
Debt instrument interest percentage				4.20%
Five Year Senior Unsecured Notes At6.75 Maturing October152019 [Member]
Debt Instrument [Line Items]
Debt instrument interest percentage				7.25%
Senior Unsecured Bonds at 7.25% maturing in 2021 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross					$ 380.0	$ 780.0
Debt instrument interest percentage				7.25%	7.25%
4.35% Senior Notes due 2029 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross				$ 400.0	$ 400.0
Note to DPL Capital Trust II Maturing in 2031 - 8.125% [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross				$ 15.6	15.6
Debt instrument interest percentage				8.125%
Debt [Member]
Debt Instrument [Line Items]
Long-term Debt and Lease Obligation, Including Current Maturities				$ 1,393.6	1,363.1
Debt [Member] \| THE DAYTON POWER AND LIGHT COMPANY [Member]
Debt Instrument [Line Items]
Long-term Debt and Lease Obligation, Including Current Maturities				$ 574.1	$ 574.4