Selected Quarterly Information (Unaudited)

12 Months Ended

Dec. 31, 2011

Selected Quarterly Information (Unaudited) [Abstract]

Selected Quarterly Information (Unaudited)

20. Selected Quarterly Information (Unaudited)

DPL
	For the 2011 periods ended (a)
$ in millions except per share amount	Predecessor									Successor
and common stock market price		March 31		June 30	September 30		November 27			December 31
Revenues	$	480.6	$	433.4	$	497.5	$	259.4	$	156.9
Operating income	$	100.9	$	65.8	$	112.9	$	48.2		$	6.1
Net income (loss)	$	43.5	$	31.7	$	67.1	$	8.2		$	(6.2	)
Earnings per share of common stock:
Basic	$	0.38	$	0.28	$	0.58	$	0.07		N/A
Diluted	$	0.38	$	0.28	$	0.58	$	0.07		N/A
Dividends declared per share	$	0.3325	$	0.3325	$	0.3325	$	0.5400		N/A

(a) Periods ended March 31, June 30, and September 30 represent three months then ended. Period ended November 27 represents approximately two months then ended and period ended December 31, represents approximately one month then ended.

		For the 2010 quarters ended
$ in millions except per share amount		Predecessor
and common stock market price		March 31		June 30	September 30			December 31
Revenues	$	437.0	$	434.1	$	502.3	$	458.0
Operating income	$	126.0	$	109.3	$	144.6	$	124.5
Net income	$	71.0	$	61.4	$	86.4	$	71.5
Earnings per share of common stock:
Basic	$	0.61	$	0.53	$	0.75	$	0.62
Diluted	$	0.61	$	0.53	$	0.74	$	0.62
Dividends declared and paid per share	$	0.3025	$	0.3025	$	0.3025	$	0.3025
Common stock market price - High	$	28.47	$	28.18	$	26.65	$	27.51
- Low	$	26.51	$	23.80	$	23.95	$	25.33