Total Long-term Debt At Subsidary With Purchase Accounting Adjustments

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 SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 7

Reference 2: 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

+ Details

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- Definition

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 SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 3: 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)

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

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: 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

+ Details

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- Definition

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

+ References

+ Details

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Period Type:	duration

- Definition

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

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: 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

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

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: 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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Period Type:	duration

- 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

Reference 2: 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=6584090&loc=d3e28878-108400

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Debt Obligations (Long-term Debt) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Sep. 19, 2013	Mar. 01, 2011	Oct. 03, 2011
Long-term debt, gross	$ 2,139.6us-gaap_DebtInstrumentCarryingAmount	$ 2,284.2us-gaap_DebtInstrumentCarryingAmount
Total long-term debt at subsidary	874.7	874.6
Obligation for capital lease	(2.8)us-gaap_CapitalLeaseObligations	(3.1)us-gaap_CapitalLeaseObligations
Unamortized debt discount	(0.7)	(1.0)
DP&L [Member]
Long-term debt, gross	877.0	876.9
Unamortized debt discount	(0.5)	(0.7)
First Mortgage Bonds Maturing in September 2016 - 1.9%
Long-term debt, gross	445.0	445.0		445.0
Debt instrument maturity year	Sep. 01, 2016
Debt instrument interest percentage	1.875%
First Mortgage Bonds Maturing in September 2016 - 1.9% \| DP&L [Member]
Long-term debt, gross	445.0	445.0
Debt instrument maturity year	Sep. 01, 2016
Debt instrument interest percentage	1.875%
Pollution Control Series Maturing in January 2028 - 4.70% [Member]
Long-term debt, gross	35.3	35.3
Debt instrument maturity year	Jan. 01, 2028
Debt instrument interest percentage	4.70%
Pollution Control Series Maturing in January 2028 - 4.70% [Member] \| DP&L [Member]
Long-term debt, gross	35.3	35.3
Debt instrument maturity year	Jan. 01, 2028
Debt instrument interest percentage	4.70%
Pollution Control Series Maturing in January 2034 - 4.80% [Member]
Long-term debt, gross	179.1	179.1
Debt instrument maturity year	Jan. 01, 2034
Debt instrument interest percentage	4.80%
Pollution Control Series Maturing in January 2034 - 4.80% [Member] \| DP&L [Member]
Long-term debt, gross	179.1	179.1
Debt instrument maturity year	Jan. 01, 2034
Debt instrument interest percentage	4.80%
Pollution Control Series Maturing in September 2036 - 4.80% [Member]
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 September 2036 - 4.80% [Member] \| DP&L [Member]
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 November 2040 - variable rates: 0.04% - 0.26% and 0.06% - 0.32% [Member]
Long-term debt, gross	100.0	100.0
Debt instrument maturity year	Nov. 01, 2040
Debt instrument interest percentage minimum	0.04%	0.04%
Debt instrument interest percentage maximum	0.15%		0.26%
Pollution control series maturing in November 2040 - variable rates: 0.04% - 0.26% and 0.06% - 0.32% [Member] \| DP&L [Member]
Long-term debt, gross	100.0	100.0
Debt instrument maturity year	Nov. 01, 2040
Debt instrument interest percentage minimum	0.04%	0.04%
Debt instrument interest percentage maximum	0.15%		0.26%
U.S. Government note maturing in February 2061 - 4.20% [Member]
Long-term debt, gross	18.1	18.3			18.7
Debt instrument maturity year	Feb. 01, 2061
Debt instrument interest percentage	4.20%				4.20%
U.S. Government note maturing in February 2061 - 4.20% [Member] \| DP&L [Member]
Long-term debt, gross	18.1	18.2			18.7
Debt instrument maturity year	Feb. 01, 2061
Debt instrument interest percentage	4.20%				4.20%
Debt instrument interest percentage minimum	4.20%
Bank Term Loan maturing in May 2018 [Member]
Long-term debt, gross	140.0	180.0
Debt instrument maturity year	May 01, 2018
Debt instrument interest percentage	2.41%
Debt instrument interest percentage minimum	2.41%	2.42%
Debt instrument interest percentage maximum	2.42%		2.45%
Note to DPL Capital Trust II Maturing in September 2031 - 8.125% [Member]
Long-term debt, gross	15.6	20.6
Debt instrument maturity year	Sep. 01, 2031
Debt instrument interest percentage	8.125%
Five Year Senior Unsecured Notes at 6.50% maturing on October 15, 2016 [Member]
Long-term debt, gross	130.0	430.0
Debt instrument maturity year	Oct. 01, 2016
Debt instrument interest percentage	6.50%	6.50%				6.50%
Five Year Senior Unsecured Notes at 6.75% maturing October 15, 2019 [Member]
Long-term debt, gross	200.0
Debt instrument maturity year	Oct. 01, 2019
Debt instrument interest percentage	6.75%
Ten Year Senior Unsecured Notes at 7.25% maturing at October 15, 2021 [Member]
Long-term debt, gross	$ 780.0	$ 780.0
Debt instrument maturity year	Oct. 01, 2021
Debt instrument interest percentage	7.25%	7.25%				7.25%