Fair Value Measurements (Tables)

6 Months Ended

9 Months Ended

12 Months Ended

15 Months Ended

Jun. 30, 2013

Jun. 30, 2013

Dec. 31, 2012

Mar. 31, 2013

Fair Value and Cost of Non-Derivative Instruments

	September 30,				December 31,
	2013				2012
$ in millions	Cost		Fair Value		Cost		Fair Value
Assets
Money Market Funds	$	0.1	$	0.1	$	0.2	$	0.2
Equity Securities		3.5		4.4		4.0		5.1
Debt Securities		5.8		5.8		4.6		5.0
Multi-Strategy Fund		-		-		0.3		0.3
Hedge Funds		0.9		0.9		-		-
Real Estate		0.4		0.4		-		-
Total Assets	$	10.7	$	11.6	$	9.1	$	10.6
Liabilities
Debt	$	2,814.5	$	2,855.3	$	2,609.9	$	2,707.1

Fair Value and Redemption Frequency

Fair Value Estimated Using Net Asset Value per Unit
$ in millions	Fair Value at September 30, 2013		Fair Value at December 31, 2012		Unfunded Commitments		Redemption Frequency
Money Market Fund (a)	$	0.1	$	0.2	$	-	Immediate
Equity Securities (b)		4.4		5.1		-	Immediate
Debt Securities (c)		5.8		5.0		-	Immediate
Multi-Strategy Fund (d)		-		0.3		-	Immediate
Hedge Funds (e)		0.9		-		-	Immediate
Real Estate (f)		0.4		-		-	Immediate
Total	$	11.6	$	10.6	$	-

Fair Value of Assets and Liabilities Measured on Recurring Basis

Assets and Liabilities Measured at Fair Value on a Recurring Basis
			Level 1		Level 2		Level 3
$ in millions	Fair Value at September 30, 2013		Based on Quoted Prices in Active Markets		Other Observable Inputs		Unobservable Inputs
Assets
Master Trust Assets
Money Market Funds	$	0.1	$	0.1	$	-	$	-
Equity Securities		4.4		-		4.4		-
Debt Securities		5.8		-		5.8		-
Hedge Funds		0.9		-		0.9		-
Real Estate		0.4		-		0.4		-
Total Master Trust Assets		11.6		0.1		11.5		-
Derivative Assets
FTRs		0.4		-		-		0.4
Heating Oil		0.1		0.1		-		-
Forward Power Contracts		21.1		-		21.1		-
Total Derivative Assets		21.6		0.1		21.1		0.4
Total Assets	$	33.2	$	0.2	$	32.6	$	0.4
Liabilities
Derivative Liabilities
Forward Power Contracts	$	10.3	$	-	$	10.3	$	-
Total Derivative Liabilities		10.3		-		10.3		-
Long-term Debt		2,855.3		-		2,836.7		18.6
Total Liabilities	$	2,865.6	$	-	$	2,847.0	$	18.6

Assets and Liabilities Measured at Fair Value on a Recurring Basis
			Level 1		Level 2		Level 3
$ in millions	Fair Value at December 31, 2012		Based on Quoted Prices in Active Markets		Other Observable Inputs		Unobservable Inputs
Assets
Master Trust Assets
Money Market Funds	$	0.2	$	0.2	$	-	$	-
Equity Securities		5.1		-		5.1		-
Debt Securities		5.0		-		5.0		-
Multi-Strategy Fund		0.3		-		0.3		-
Total Master Trust Assets		10.6		0.2		10.4		-
Derivative Assets
Heating Oil Futures		0.2		0.2		-		-
Forward Power Contracts		6.3		-		6.3		-
Total Derivative Assets		6.5		0.2		6.3		-
Total Assets	$	17.1	$	0.4	$	16.7	$	-
Liabilities
Derivative Liabilities
FTRs	$	0.1	$	-	$	-	$	0.1
Interest Rate Hedge		29.5		-		29.5		-
Forward Power Contracts		13.1		-		13.1		-
Total Derivative Liabilities		42.7		-		42.6		0.1
Long-term debt		2,707.1		-		2,688.2		18.9
Total Liabilities	$	2,749.8	$	-	$	2,730.8	$	19.0

DP&L [Member]

Fair Value and Cost of Non-Derivative Instruments

	September 30,				December 31,
	2013				2012
$ in millions	Cost		Fair Value		Cost		Fair Value
Assets
Money market funds	$	0.1	$	0.1	$	0.2	$	0.2
Equity securities		3.5		4.4		4.0		5.1
Debt securities		5.8		5.8		4.6		5.0
Multi-strategy fund		-		-		0.3		0.3
Hedge funds		0.9		0.9		-		-
Real estate		0.4		0.4		-		-
Total assets	$	10.7	$	11.6	$	9.1	$	10.6
Liabilities
Debt	$	1,347.2	$	1,330.8	$	903.1	$	926.9

Fair Value and Redemption Frequency

Fair Value Estimated Using Net Asset Value per Unit
$ in millions	Fair Value at September 30, 2013		Fair Value at December 31, 2012		Unfunded Commitments		Redemption Frequency
Money market fund (a)	$	0.1	$	0.2	$	-	Immediate
Equity securities (b)		4.4		5.1		-	Immediate
Debt securities (c)		5.8		5.0		-	Immediate
Multi-strategy fund (d)		-		0.3		-	Immediate
Hedge funds (e)		0.9		-		-	Immediate
Real estate (f)		0.4		-		-	Immediate
Total	$	11.6	$	10.6	$	-

Fair Value of Assets and Liabilities Measured on Recurring Basis

Assets and Liabilities Measured at Fair Value on a Recurring Basis
			Level 1		Level 2		Level 3
$ in millions	Fair Value at September 30, 2013		Based on Quoted Prices in Active Markets		Other Observable Inputs		Unobservable Inputs
Assets
Master trust assets
Money market funds	$	0.1	$	0.1	$	-	$	-
Equity securities		4.4		-		4.4		-
Debt securities		5.8		-		5.8		-
Hedge funds		0.9		-		0.9		-
Real estate		0.4		-		0.4		-
Total Master trust assets		11.6		0.1		11.5		-
Derivative assets
FTRs		0.4		-		-		0.4
Heating Oil		0.1		0.1		-		-
Forward power contracts		21.2		-		21.2		-
Total derivative assets		21.7		0.1		21.2		0.4
Total assets	$	33.3	$	0.2	$	32.7	$	0.4
Liabilities
Derivative liabilities
Forward power contracts		10.1		-		10.1		-
Total derivative liabilities		10.1		-		10.1		-
Long-term debt		1,330.8		-		1,312.2		18.6
Total liabilities	$	1,340.9	$	-	$	1,322.3	$	18.6

Assets and Liabilities Measured at Fair Value on a Recurring Basis
			Level 1		Level 2		Level 3
$ in millions	Fair Value at December 31, 2012		Based on Quoted Prices in Active Markets		Other Observable Inputs		Unobservable Inputs
Assets
Master trust assets
Money market funds	$	0.2	$	0.2	$	-	$	-
Equity securities		5.1		-		5.1		-
Debt securities		5.0		-		5.0		-
Multi-strategy fund		0.3		-		0.3		-
Total Master trust assets		10.6		0.2		10.4		-
Derivative assets
Heating oil futures		0.2		0.2		-		-
Forward power contracts		7.3		-		7.3		-
Total Derivative assets		7.5		0.2		7.3		-
Total assets	$	18.1	$	0.4	$	17.7	$	-
Liabilities
Derivative liabilities
FTRs	$	0.1	$	-	$	-	$	0.1
Forward power contracts		11.6		-		11.6		-
Total Derivative liabilities		11.7		-		11.6		0.1
Long-term debt		926.9		-		908.0		18.9
Total liabilities	$	938.6	$	-	$	919.6	$	19.0