Business Segments (Tables)

3 Months Ended

9 Months Ended

Sep. 30, 2012

Sep. 30, 2011

Sep. 30, 2012

Sep. 30, 2011

Business Segments [Abstract]

Financial Reporting for Reportable Business Segments

Successor
$ in millions	Utility		Competitive Retail		Other		Adjustments and Eliminations		DPL Consolidated
For the three months ended September 30, 2012
Revenues from external customers	$	313.4	$	145.5	$	12.8	$	-	$	471.7
Intersegment revenues		113.4		-		0.9		(114.3)		-
Total revenues		426.8		145.5		13.7		(114.3)		471.7
Fuel		108.1		-		4.6		-		112.7
Purchased power		79.9		123.4		0.9		(113.5)		90.7
Amortization of intangibles		-		-		24.2		-		24.2
Gross margin	$	238.8	$	22.1	$	(16.0)	$	(0.8)	$	244.1
Depreciation and amortization	$	36.5	$	0.2	$	(3.6)	$	-	$	33.1
Goodwill impairment (Note 15)		-		-		1,850.0		-		1,850.0
Fixed asset impairment		80.8		-		-		(80.8)		-
Interest expense		10.0		0.2		21.0		(0.1)		31.1
Income tax expense (benefit)		6.5		5.9		7.8		-		20.2
Net income (loss)		(11.2)		10.0		(1,809.7)		-		(1,810.9)
Cash capital expenditures		52.2		-		0.4		-		52.6
At September 30, 2012
Total assets	$	3,386.6	$	93.2	$	714.4	$	-	$	4,194.2

Predecessor
For the three months ended September 30, 2011
Revenues from external customers	$	362.3	$	118.6	$	16.7	$	-	$	497.6
Intersegment revenues		90.2		-		1.1		(91.3)		-
Total revenues		452.5		118.6		17.8		(91.3)		497.6
Fuel		124.0		-		5.0		-		129.0
Purchased power		95.6		101.4		1.5		(90.2)		108.3
Gross margin	$	232.9	$	17.2	$	11.3	$	(1.1)	$	260.3
Depreciation and amortization	$	33.8	$	0.1	$	1.9	$	-	$	35.8
Interest expense		9.3		0.1		7.6		(0.2)		16.8
Income tax expense (benefit)		26.8		4.2		(2.4)		-		28.6
Net income (loss)		63.9		7.8		(6.2)		1.6		67.1
Cash capital expenditures		49.1		-		0.8		-		49.9
At December 31, 2011
Total assets	$	3,538.3	$	69.9	$	2,529.0	$	-	$	6,137.2

Successor
$ in millions	Utility		Competitive Retail		Other		Adjustments and Eliminations		DPL Consolidated
For the nine months ended September 30, 2012
Revenues from external customers	$	887.9	$	367.5	$	32.3	$	-	$	1,287.7
Intersegment revenues		285.1		-		2.6		(287.7)		-
Total revenues		1,173.0		367.5		34.9		(287.7)		1,287.7
Fuel		272.3		-		6.7		-		279.0
Purchased power		234.1		315.6		1.3		(285.2)		265.8
Amortization of intangibles		-		-		71.2		-		71.2
Gross margin	$	666.6	$	51.9	$	(44.3)	$	(2.5)	$	671.7
Depreciation and amortization	$	107.3	$	0.3	$	(12.0)	$	-	$	95.6
Goodwill impairment (Note 15)		-		-		1,850.0		-		1,850.0
Fixed asset impairment		80.8		-		-		(80.8)		-
Interest expense		29.0		0.4		64.1		(0.4)		93.1
Income tax expense (benefit)		39.4		15.8		(14.9)		-		40.3
Net income (loss)		58.3		17.5		(1,853.1)		-		(1,777.3)
Cash capital expenditures		161.7		0.5		0.9		-		163.1
At September 30, 2012
Total assets	$	3,386.6	$	93.2	$	714.4	$	-	$	4,194.2

Predecessor
For the nine months ended September 30, 2011
Revenues from external customers	$	1,052.9	$	314.6	$	44.0	$	-	$	1,411.5
Intersegment revenues		246.3		-		3.1		(249.4)		-
Total revenues		1,299.2		314.6		47.1		(249.4)		1,411.5
Fuel		311.7		-		9.2		-		320.9
Purchased power		317.8		268.6		2.6		(246.3)		342.7
Gross margin	$	669.7	$	46.0	$	35.3	$	(3.1)	$	747.9
Depreciation and amortization	$	100.3	$	0.2	$	5.5	$	-	$	106.0
Interest expense		28.7		0.2		22.7		(0.3)		51.3
Income tax expense (benefit)		69.3		14.1		(13.7)		-		69.7
Net income (loss)		147.4		19.6		(24.7)		-		142.3
Cash capital expenditures		139.9		-		1.4		-		141.3
At December 31, 2011
Total assets	$	3,538.3	$	69.9	$	2,529.0	$	-	$	6,137.2