Long Term Debt Range Adjusted To Fair Value At Merger End

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- Definition

Long Term Debt Range Adjusted To Fair Value at Merger Start

+ References

No definition available.

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- Definition

Total Long-term Debt At Subsidiary With Purchase Accounting Adjustments

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No definition available.

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- Definition

Unamortized Deferred Financing Costs

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No definition available.

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- Definition

Unamortized Deferred Financing Costs (Subsidiary)

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No definition available.

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- Definition

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737

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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 16
-Article 7

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Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
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-Paragraph 16
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- Definition

When presenting a range of interest rates, the highest effective rate for funds borrowed under the debt agreement as of the balance sheet date.

+ References

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- Definition

When presenting a range of interest rates, the lowest effective rate for funds borrowed under the debt agreement as of the balance sheet date.

+ References

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- Definition

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

+ References

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- Definition

Maximum contractual interest rate for funds borrowed, under the debt agreement.

+ References

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Minimum contractual interest rate for funds borrowed, under the debt agreement.

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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

Latest date the outstanding debt instruments are required to be repaid, in CCYY-MM-DD format.

+ References

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- Definition

The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399

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-Publisher FASB
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- Definition

The amount of debt discount (net of debt premium) that was originally recognized at the issuance of the instrument that has yet to be amortized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
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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.

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Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). 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) - USD ($) $ in Millions	12 Months Ended
Debt (Long-term Debt) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Jan. 06, 2016	Aug. 03, 2015	Jul. 31, 2015	Jul. 01, 2015	Oct. 31, 2014
Debt Instrument [Line Items]
Capital Lease Obligations	$ 0.4	$ 0.0
Unamortized Deferred Financing Costs	(8.8)	(11.1)
Debt Instrument, Unamortized Discount (Premium), Net	(0.6)	(0.7)
Total long-term debt at subsidary	747.2	754.5
Less: current portion	(29.7)	(572.8)
Total	$ 1,828.7	1,420.5
Debt maturity date, earliest	2019
Debt maturity date, latest	2061
THE DAYTON POWER AND LIGHT COMPANY [Member]
Debt Instrument [Line Items]
Capital Lease Obligations	$ 0.4	0.0
Unamortized Deferred Financing Costs	(11.8)	(6.2)
Unamortized Deferred Financing Costs (Subsidiary)	(10.7)	(5.0)
Debt Instrument, Unamortized Discount	(2.2)	(0.2)
Debt Instrument, Unamortized Discount (Premium), Net	(5.5)	(3.6)
Less: current portion	(4.7)	(443.1)
Total	744.7	313.6
Term Loan Maturing 2022 (DPL) [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 445.0	$ 0.0
Debt instrument maturity year	Aug. 24, 2022
Debt Instrument, Interest Rate, Effective Percentage Rate Range, Minimum	4.00%	0.00%
Debt Instrument, Interest Rate, Effective Percentage Rate Range, Maximum	4.01%	0.00%
Term Loan Maturing 2022 (DPL) [Member] \| THE DAYTON POWER AND LIGHT COMPANY [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 445.0	$ 0.0
Debt instrument maturity year	Aug. 24, 2022
Debt Instrument, Interest Rate, Effective Percentage Rate Range, Minimum	4.00%	0.00%
Debt Instrument, Interest Rate, Effective Percentage Rate Range, Maximum	4.01%	0.00%
First Mortgage Bonds Maturing in 2016 - 1.875%
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 0.0	$ 445.0
Debt instrument maturity year	Sep. 01, 2016
Debt instrument interest percentage	1.875%	1.875%
First Mortgage Bonds Maturing in 2016 - 1.875% \| THE DAYTON POWER AND LIGHT COMPANY [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 0.0	$ 445.0
Debt instrument maturity year	Sep. 01, 2016
Debt instrument interest percentage	1.875%	1.875%
Pollution Control Series Maturing in 2028 - 4.70% [Member] \| THE DAYTON POWER AND LIGHT COMPANY [Member]
Debt Instrument [Line Items]
Debt instrument interest percentage						4.70%
Pollution Control Series Maturing in 2034 - 4.80% [Member] \| THE DAYTON POWER AND LIGHT COMPANY [Member]
Debt Instrument [Line Items]
Debt instrument interest percentage				4.80%		4.80%
Pollution Control Series Maturing in 2036 - 4.80% [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 100.0	$ 100.0
Debt instrument maturity year	Sep. 01, 2036
Debt instrument interest percentage	4.80%
Pollution Control Series Maturing in 2036 - 4.80% [Member] \| THE DAYTON POWER AND LIGHT COMPANY [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 100.0	100.0
Debt instrument maturity year	Sep. 01, 2036
Debt instrument interest percentage	4.80%
Tax-exempt First Mortgage Bonds - rates from: 1.29% - 1.42% (a) and 1.13% - 1.17% (b)
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 200.0	$ 200.0
Debt instrument maturity year	Aug. 01, 2020
Debt instrument interest percentage minimum	1.29%	1.13%
Debt instrument interest percentage maximum	1.42%	1.17%
Tax-exempt First Mortgage Bonds - rates from: 1.29% - 1.42% (a) and 1.13% - 1.17% (b) \| THE DAYTON POWER AND LIGHT COMPANY [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 200.0	$ 200.0
Debt instrument maturity year	Aug. 01, 2020
Debt instrument interest percentage minimum	1.29%
Debt instrument interest percentage maximum	1.42%
U.S. Government note maturing in 2061 - 4.20% [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 18.0	18.1
Debt instrument maturity year	Feb. 01, 2061
Debt instrument interest percentage	4.20%
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	$ 18.0	18.1
Debt instrument maturity year	Feb. 01, 2061
Debt instrument interest percentage	4.20%
Bank Term Loan maturing in May 2018 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 125.0	$ 125.0			$ 160.0
Debt instrument maturity year	Jul. 31, 2020
Debt instrument interest percentage minimum	2.67%	2.44%
Debt instrument interest percentage maximum	3.02%	2.67%
Senior Unsecured Bonds at 6.50% maturing in 2016 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 0.0	$ 130.0	$ 130.0				$ 130.0
Debt instrument maturity year	Oct. 01, 2016
Debt instrument interest percentage	6.50%		6.50%				6.50%
Senior Unsecured Bonds at 6.75% maturing in 2019 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 200.0	200.0
Debt instrument maturity year	Oct. 01, 2019
Debt instrument interest percentage	6.75%
Senior Unsecured Bonds at 7.25% maturing in 2021 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 780.0	780.0
Debt instrument maturity year	Oct. 01, 2021
Debt instrument interest percentage	7.25%
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 maturity year	Sep. 01, 2031
Debt instrument interest percentage	8.125%