Goodwill And Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible assets

$ in millions	December 31, 2014						December 31, 2013
	Gross Balance		Accumulated Amortization		Net Balance		Gross Balance		Accumulated Amortization		Net Balance
Subject to Amortization
Customer Contracts (a)	$	27.0	$	(27.0)	$	-	$	27.0	$	(25.8)	$	1.2
Customer Relationships (b)		31.8		(6.9)		24.9		31.8		(4.6)		27.2
Other (c)		7.7		(1.3)		6.4		8.4		(0.1)		8.3
		66.5		(35.2)		31.3		67.2		(30.5)		36.7
Not subject to Amortization
Trademark/Trade name (d)		6.1		-		6.1		6.1		-		6.1
Total intangibles	$	72.6	$	(35.2)	$	37.4	$	73.3	$	(30.5)	$	42.8

Intangible assets acquired during period

$ in millions	Amount		Subject to Amortization/ Indefinite-lived	Weighted Average Amortization Period (years)	Amortization Method
Renewable Energy Certificates	$	7.7	Subject to amortization	Various	As Utilized

Estimated Amortization Expense

	Estimated amortization expense
	Years ending December 31,
$ in millions	2015			2016		2017		2018	2019
Customer relationships	$	3.8	$	3.1	$	2.7	$	2.3	$	2.1
Renewable Energy Certificates		4.2		3.5		-		-		-
	$	8.0	$	6.6	$	2.7	$	2.3	$	2.1

Changes in Goodwill

$ in millions		DP&L Reporting Unit		DPLER Reporting Unit		Total
Balance at December 31, 2012
Goodwill	$	2,440.5	$	135.8	$	2,576.3
Accumulated impairment losses		(1,817.2)		-		(1,817.2)
Net balance at December 31, 2012	$	623.3	$	135.8	$	759.1
Goodwill impairments during 2013	$	(306.3)	$	-	$	(306.3)
Balance at December 31, 2013
Goodwill	$	2,440.5	$	135.8	$	2,576.3
Accumulated impairment losses		(2,123.5)		-		(2,123.5)
Net balance at December 31, 2013	$	317.0	$	135.8	$	452.8
Goodwill impairments during 2014	$	-	$	(135.8)	$	(135.8)
Balance at December 31, 2014
Goodwill	$	2,440.5	$	135.8	$	2,576.3
Accumulated impairment losses		(2,123.5)		(135.8)		(2,259.3)
Net balance at December 31, 2014	$	317.0	$	-	$	317.0