Income Taxes (Tables)

9 Months Ended

Sep. 30, 2012

Schedule of Effective Income Tax Rates (Text Block)

	Three Months Ended		Nine Months Ended
	September 30,		September 30,
	2012	2011	2012	2011
	Successor	Predecessor	Successor	Predecessor
DPL	(1.2)%	29.9%	(2.3)%	32.9%

Effective Income Tax Rates

	Three Months Ended		Nine Months Ended
	September 30,		September 30,
	2012	2011	2012	2011
	Successor	Predecessor	Successor	Predecessor
DPL	(1.2)%	29.9%	(2.3)%	32.9%

DP&L [Member]

Schedule of Effective Income Tax Rates (Text Block)

	Three Months Ended		Nine Months Ended
	September 30,		September 30,
	2012	2011	2012	2011
DP&L	(138.3)%	29.6%	40.3%	32.0%

Effective Income Tax Rates

	Three Months Ended		Nine Months Ended
	September 30,		September 30,
	2012	2011	2012	2011
DP&L	(138.3)%	29.6%	40.3%	32.0%