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Overview and Summary of Significant Accounting Policies (Tables) (DP&L [Member])

3 Months Ended

Mar. 31, 2012

DP&L [Member]


		Three Months Ended March 31,
$ in millions		2012			2011

DP&L Revenues:
Sales to DPLER (a)	$	83.0		$	75.1

DP&L Operation & Maintenance Expenses:
Premiums paid for insurance services provided by MVIC (b)		(0.6	)		(0.8	)
Expense recoveries for services provided to DPLER (c)		0.9			0.9