Derivative Instruments and Hedging Activities (Tables)

12 Months Ended

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Schedule of Notional Amounts of Outstanding Derivative Positions

Commodity	Accounting Treatment	Unit	Purchases (in thousands)		Sales (in thousands)		Net Purchases/ (Sales) (in thousands)
FTRs	Mark to Market	MWh		10.5		-		10.5
Heating Oil Futures	Mark to Market	Gallons		378.0		-		378.0
Natural Gas Futures	Mark to Market	Dths		200.0		-		200.0
Forward Power Contracts	Cash Flow Hedge	MWh		175.0		(2,991.0)		(2,816.0)
Forward Power Contracts	Mark to Market	MWh		1,725.2		(2,707.8)		(982.6)

Commodity	Accounting Treatment	Unit	Purchases (in thousands)		Sales (in thousands)		Net Purchases/ (Sales) (in thousands)
FTRs	Mark to Market	MWh		7.1		-		7.1
Heating Oil Futures	Mark to Market	Gallons		1,428.0		-		1,428.0
Forward Power Contracts	Cash Flow Hedge	MWh		140.4		(4,705.7)		(4,565.3)
Forward Power Contracts	Mark to Market	MWh		3,177.8		(2,883.1)		294.7

Gains or Losses Recognized in AOCI for the Cash Flow Hedges

	Year ended December 31, 2014				Year ended December 31, 2013				Year ended December 31, 2012
$ in millions (net of tax)	Power		Interest Rate Hedges		Power		Interest Rate Hedges		Power		Interest Rate Hedges
Beginning accumulated derivative gain / (loss) in AOCI	$	1.4	$	19.2	$	(3.0)	$	0.5	$	0.3	$	(0.8)
Net gains / (losses) associated with current period hedging transactions		(19.0)		-		1.0		18.7		(2.6)		1.1
Net gains reclassified to earnings:
Interest Expense		-		(0.9)		-		-		-		0.2
Revenues		18.3		-		2.1		-		(0.7)		-
Purchased Power		(0.5)		-		1.3		-		-		-
Ending accumulated derivative gain / (loss) in AOCI	$	0.2	$	18.3	$	1.4	$	19.2	$	(3.0)	$	0.5
Net gains / (losses) associated with the ineffective portion of the hedging transaction
Interest Expense	$	-	$	-	$	-	$	0.8	$	-	$	0.2
Portion expected to be reclassified to earnings in the next twelve months (a)	$	3.5	$	(0.9)
Maximum length of time that we are hedging our exposure to variability in future cash flows related to forecasted transactions (in months)		24		0

^[1]

Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location

Year ended December 31, 2014
$ in millions	Heating Oil			FTRs		Power		Natural Gas		Total
Derivatives not designated as hedging instruments
Change in unrealized loss	$	(0.6)	$	(0.8)	$	(1.5)	$	(0.1)		(3.0)
Realized gain / (loss)		(0.1)		0.7		(3.6)		(0.1)		(3.1)
Total	$	(0.7)	$	(0.1)	$	(5.1)	$	(0.2)		(6.1)
Recorded on Balance Sheet:
Regulatory asset	$	(0.1)	$	-	$	-	$	-	$	(0.1)
Recorded in Income Statement:  gain / (loss)
Purchased Power		-		(0.1)		(5.1)		(0.2)		(5.4)
Fuel		(0.6)		-		-		-		(0.6)
Total	$	(0.7)	$	(0.1)	$	(5.1)	$	(0.2)		(6.1)

Year ended December 31, 2013
$ in millions	Heating Oil		FTRs		Power		Total
Derivatives not designated as hedging instruments
Change in unrealized gain	$	-	$	0.3	$	0.6	$	0.9
Realized gain		0.1		1.2		1.1		2.4
Total	$	0.1	$	1.5	$	1.7	$	3.3
Recorded in Income Statement:  gain / (loss)
Revenue	$	-	$	-	$	-	$	-
Purchased Power		-		1.5		1.7		3.2
Fuel		0.1		-		-		0.1
O&M		-		-		-		-
Total	$	0.1	$	1.5	$	1.7	$	3.3

Year ended December 31, 2012
$ in millions	NYMEX Coal		Heating Oil		FTRs		Power		Total
Derivatives not designated as hedging instruments
Change in unrealized gain / (loss)	$	14.5	$	(1.6)	$	(0.2)	$	4.3	$	17.0
Realized gain / (loss)		(29.5)		1.9		0.5		(5.0)		(32.1)
Total	$	(15.0)	$	0.3	$	0.3	$	(0.7)	$	(15.1)
Recorded on Balance Sheet:
Partners' share of gain	$	4.2	$	-	$	-	$	-	$	4.2
Regulatory (asset) / liability		1.0		(0.6)		-		-		0.4
Recorded in Income Statement:  gain / (loss)
Revenue		-		-		-		(5.1)		(5.1)
Purchased Power		-		-		0.3		4.4		4.7
Fuel		(20.2)		0.7		-		-		(19.5)
O&M		-		0.2		-		-		0.2
Total	$	(15.0)	$	0.3	$	0.3	$	(0.7)	$	(15.1)

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

Fair Values of Derivative Instruments
December 31, 2014
					Gross Amounts Not Offset in the Consolidated Balance Sheets
$ in millions	Hedging Designation		Gross Fair Value as presented in the Consolidated Balance Sheets (a)		Financial Instruments with Same Counterparty in Offsetting Position		Cash Collateral		Net Amount
Assets
Short-term derivative positions (presented in Other current assets)
Forward power contracts	Cash Flow		$	5.6	$	(2.0)	$	-	$	3.6
Forward power contracts	MTM			5.5		(3.4)		-		2.1
Long-term derivative positions (presented in Other deferred assets)
Forward power contracts	Cash Flow			0.3		(0.3)		-		-
Forward power contracts	MTM			3.5		(0.9)		-		2.6
Total assets			$	14.9	$	(6.6)	$	-	$	8.3
Liabilities
Short-term derivative positions (presented in Other current liabilities)
Forward power contracts	Cash Flow		$	2.1	$	(2.0)	$	-	$	0.1
Forward power contracts	MTM			7.5		(3.4)		(4.1)		-
FTRs	MTM			0.6		-		-		0.6
Heating oil futures	MTM			0.4		-		(0.4)		-
Natural gas		MTM		0.1		-		(0.1)		-
Long-term derivative positions (presented in Other deferred liabilities)
Forward power contracts	Cash Flow			0.6		(0.3)		(0.3)		-
Forward power contracts	MTM			0.9		(0.9)		-		-
Total liabilities			$	12.2	$	(6.6)	$	(4.9)	$	0.7

Fair Values of Derivative Instruments
December 31, 2013
				Gross Amounts Not Offset in the Consolidated Balance Sheets
$ in millions	Hedging Designation	Gross Fair Value as presented in the Consolidated Balance Sheets (a)		Financial Instruments with Same Counterparty in Offsetting Position		Cash Collateral		Net Amount
Assets
Short-term derivative positions (presented in Other current assets)
Forward power contracts	Cash Flow	$	0.5	$	(0.2)	$	-	$	0.3
Forward power contracts	MTM		4.9		(4.2)		-		0.7
FTRs	MTM		0.2		-		-		0.2
Heating oil futures	MTM		0.2		-		(0.2)		-
Long-term derivative positions (presented in Other deferred assets)
Forward power contracts	Cash Flow		3.0		-		(3.0)		-
Forward power contracts	MTM		5.0		(0.3)		-		4.7
Total assets		$	13.8	$	(4.7)	$	(3.2)	$	5.9
Liabilities
Short-term derivative positions (presented in Other current liabilities)
Forward power contracts	Cash Flow	$	2.7	$	(0.2)	$	(2.3)	$	0.2
Forward power contracts	MTM		6.6		(4.2)		(2.3)		0.1
Long-term derivative positions (presented in Other deferred liabilities)
Forward power contracts	MTM		1.3		(0.3)		(1.0)		-
Total liabilities		$	10.6	$	(4.7)	$	(5.6)	$	0.3

DP&L [Member]

Schedule of Notional Amounts of Outstanding Derivative Positions

Commodity	Accounting Treatment	Unit	Purchases (in thousands)		Sales (in thousands)		Net Purchases/ (Sales) (in thousands)
FTRs	Mark to Market	MWh		10.5		-		10.5
Heating Oil Futures	Mark to Market	Gallons		378.0		-		378.0
Natural Gas	Mark to Market	Dths		200.0		-		200.0
Forward Power Contracts	Cash Flow Hedge	MWh		175.0		(2,991.0)		(2,816.0)
Forward Power Contracts	Mark to Market	MWh		1,725.2		(2,804.0)		(1,078.8)

Commodity	Accounting Treatment	Unit	Purchases (in thousands)		Sales (in thousands)		Net Purchases/ (Sales) (in thousands)
FTRs	Mark to Market	MWh		7.1		-		7.1
Heating Oil Futures	Mark to Market	Gallons		1,428.0		-		1,428.0
Forward Power Contracts	Cash Flow Hedge	MWh		140.4		(4,705.7)		(4,565.3)
Forward Power Contracts	Mark to Market	MWh		3,172.4		(2,888.5)		283.9

Gains or Losses Recognized in AOCI for the Cash Flow Hedges

	Year ended December 31, 2014				Year ended December 31, 2013				Year ended December 31, 2012
$ in millions (net of tax)	Power		Interest Rate Hedge		Power		Interest Rate Hedge		Power		Interest Rate Hedge
Beginning accumulated derivative gain / (loss) in AOCI	$	1.0	$	5.2	$	(4.7)	$	7.3	$	(0.8)	$	9.8
Net gains / (losses) associated with current period hedging transactions		(18.8)		-		1.0		-		(3.0)		-
Net gains reclassified to earnings:
Interest Expense		-		(2.6)		-		(2.1)		-		(2.5)
Revenues		18.2		-		1.4		-		(1.1)		-
Purchased Power		(0.2)		-		3.3		-		0.2		-
Ending accumulated derivative gain / (loss) in AOCI	$	0.2	$	2.6	$	1.0	$	5.2	$	(4.7)	$	7.3
Net gains or losses associated with the ineffective portion of the hedging transactions were immaterial in the years ended December 31, 2014, 2013 and 2012.
Portion expected to be reclassified to earnings in the next twelve months (a)	$	3.5	$	(2.6)
Maximum length of time that we are hedging our exposure to variability in future cash flows related to forecasted transactions (in months)		24		0

Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location

Year ended December 31, 2014
$ in millions	Heating Oil		FTRs		Power		Natural Gas		Total
Derivatives not designated as hedging instruments
Change in unrealized loss	$	(0.6)	$	(0.8)	$	(1.5)	$	(0.1)	$	(3.0)
Realized gain / (loss)		(0.1)		0.7		(3.0)		(0.1)		(2.5)
Total	$	(0.7)	$	(0.1)	$	(4.5)	$	(0.2)	$	(5.5)
Recorded on Balance Sheet:
Regulatory asset	$	(0.1)	$	-	$	-	$	-	$	(0.1)
Recorded in Income Statement:  gain / (loss)
Revenue		-		-		0.7		-		0.7
Purchased Power		-		(0.1)		(5.2)		(0.2)		(5.5)
Fuel		(0.6)		-		-		-		(0.6)
Total	$	(0.7)	$	(0.1)	$	(4.5)	$	(0.2)	$	(5.5)

Year ended December 31, 2013
$ in millions	Heating Oil		FTRs		Power		Total
Derivatives not designated as hedging instruments
Change in unrealized gain / (loss)	$	-	$	0.3	$	(1.2)	$	(0.9)
Realized gain		0.1		1.2		1.6		2.9
Total	$	0.1	$	1.5	$	0.4	$	2.0
Recorded in Income Statement:  gain / (loss)
Revenue	$	-	$	-	$	0.2	$	0.2
Purchased Power		-		1.5		0.2		1.7
Fuel		0.1		-		-		0.1
Total	$	0.1	$	1.5	$	0.4	$	2.0

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

Fair Values of Derivative Instruments
December 31, 2014
				Gross Amounts Not Offset in the Balance Sheets
$ in millions	Hedging Designation	Gross Fair Value as presented in the Balance Sheets		Financial Instruments with Same Counterparty in Offsetting Position		Cash Collateral		Net Amount
Assets
Short-term derivative positions (presented in Other current assets)
Forward power contracts	Cash Flow	$	5.6	$	(2.0)	$	-	$	3.6
Forward power contracts	MTM		5.6		(3.4)		-		2.2
Long-term derivative positions (presented in Other deferred assets)
Forward power contracts	Cash Flow		0.3		(0.3)		-		-
Forward power contracts	MTM		3.6		(0.9)		-		2.7
Total assets		$	15.1	$	(6.6)	$	-	$	8.5
Liabilities
Short-term derivative positions (presented in Other current liabilities)
Forward power contracts	Cash Flow	$	2.1	$	(2.0)	$	-	$	0.1
Forward power contracts	MTM		7.5		(3.4)		(4.1)		-
FTRs	MTM		0.6		-		-		0.6
Heating oil futures	MTM		0.4		-		(0.4)		-
Natural gas futures	MTM		0.1		-		(0.1)		-
Long-term derivative positions (presented in Other deferred liabilities)
Forward power contracts	Cash Flow		0.6		(0.3)		(0.3)		-
Forward power contracts	MTM		1.0		(0.9)		-		0.1
Total liabilities		$	12.3	$	(6.6)	$	(4.9)	$	0.8

Fair Values of Derivative Instruments
December 31, 2013
				Gross Amounts Not Offset in the Balance Sheets
$ in millions	Hedging Designation	Gross Fair Value as presented in the Balance Sheets		Financial Instruments with Same Counterparty in Offsetting Position		Cash Collateral		Net Amount
Assets
Short-term derivative positions (presented in Other current assets)
Forward power contracts	Cash Flow	$	0.5	$	(0.2)	$	-	$	0.3
Forward power contracts	MTM		4.9		(4.2)		-		0.7
FTRs	MTM		0.2		-		-		0.2
Heating oil futures	MTM		0.2		-		(0.2)		-
Long-term derivative positions (presented in Other deferred assets)
Forward power contracts	Cash Flow		3.0		-		(3.0)		-
Forward power contracts	MTM		5.0		(0.3)		-		4.7
Total assets		$	13.8	$	(4.7)	$	(3.2)	$	5.9
Liabilities
Short-term derivative positions (presented in Other current liabilities)
Forward power contracts	Cash Flow	$	2.7	$	(0.2)	$	(2.3)	$	0.2
Forward power contracts	MTM		6.6		(4.2)		(2.3)		0.1
Long-term derivative positions (presented in Other deferred liabilities)
Forward power contracts	MTM		1.3		(0.3)		(1.0)		-
Total liabilities		$	10.6	$	(4.7)	$	(5.6)	$	0.3

[1] (a)The actual amounts that we reclassify from AOCI to earnings related to power can differ from the estimate above due to market price changes.