Acquisition Cost Per Share

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- Definition

Additional principal amount of senior notes to be raised

+ Details

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- Definition

Amount of debt and preferred stock assumed by AES at acquisition

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- Definition

Divestiture Of Business Potential Fees

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- Definition

Quarterly Common Stock Dividend Maximum Limit

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- Definition

Value of divestiture of business

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- Definition

Interest rate stated in the contractual 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

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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
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- Definition

When presenting a range of maturity dates, the latest date when the outstanding debt instruments are required to be repaid. May be presented in a variety of ways (for example: year only, month and year, day, month and year, and number of years).

+ References

Reference 1: 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))
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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 2
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

The maximum amount of borrowing capacity under a line of credit that is available as of the balance sheet date for a specific purpose other than for financing goods acquired for inventory or imminent delivery to a customer.

+ 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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 2, 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher SEC
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- Definition

Carrying value as of the balance sheet date of loans from a bank with maturities initially due after one year or beyond the operating cycle if longer, excluding current portion.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 22
-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Carrying value as of the balance sheet date of the portion of long-term notes having the highest claim on the assets of the issuer in case of bankruptcy or liquidation, due within one year or the normal operating cycle, if longer. Senior note holders are paid off in full before any payments are made to debt holders having a lesser priority of repayment.

+ 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

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-Section S99
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-Subparagraph (SX 210.5-02.20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Proposed Merger with the AES Corporation (Narrative) (Details) (USD $)	0 Months Ended	6 Months Ended		3 Months Ended	6 Months Ended			6 Months Ended	3 Months Ended			0 Months Ended
	Apr. 19, 2011	Jun. 30, 2011	Mar. 01, 2011	Jun. 30, 2011 Senior Notes Maturing in September 2011 - 6.875% [Member]	Jun. 30, 2011 Senior Notes Maturing in September 2011 - 6.875% [Member]	Apr. 19, 2011 Senior Notes Maturing in September 2011 - 6.875% [Member]	Dec. 31, 2010 Senior Notes Maturing in September 2011 - 6.875% [Member]	Jun. 30, 2011 DP&L [Member] U.S. Government note maturing in February 2061 - 4.20% [Member]	Jun. 30, 2011 DP&L [Member]	Apr. 19, 2011 DP&L [Member]	Nov. 21, 2006 DP&L [Member]	Apr. 19, 2011 Contract Termination [Member]
Acquisition cost per share	$ 30.00
Value of divestiture of business	$ 3,500,000,000
Amount of debt and preferred stock assumed by AES at acquisition	1,200,000,000
Maximum quarterly common stock dividend per share		0.3325
Senior notes maturing in September 2011				297,400,000	297,400,000	297,400,000	297,400,000
Debt instrument interest percentage		4.20%	4.20%	6.875%	6.875%			4.20%
Debt instrument maturity year		2061		September 2011	September 2011			February 2061	2026
Additional principal amount of senior notes to be raised		1,250,000,000
Unsecured revolving credit agreement	200,000,000									220,000,000	220,000,000
Additional credit facility	125,000,000
Loans Payable to Bank, Noncurrent	425,000,000	425,000,000
Divestiture of business potential fees		$ 45,000,000										$ 106,000,000