Income Taxes (Tables)

6 Months Ended

Jun. 30, 2012

Schedule of Effective Income Tax Rates (Text Block)

	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
	Successor		Predecessor		Successor		Predecessor
DPL	64.0	%	34.0	%	38.1	%	35.3	%

Effective Income Tax Rates

	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
	Successor		Predecessor		Successor		Predecessor
DPL	64.0	%	34.0	%	38.1	%	35.3	%

DP&L [Member]

Schedule of Effective Income Tax Rates (Text Block)

	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
DP&L	33.3	%	33.6	%	32.2	%	33.8	%

Effective Income Tax Rates

	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
DP&L	33.3	%	33.6	%	32.2	%	33.8	%