Acquisitions (Tables)

9 Months Ended

Sep. 30, 2012

Allocation of Recorded Value of Net Assets Acquired in Transaction

	(in millions)
Proved oil and gas properties	$	39.2
Unevaluated oil and gas properties		1.6
Asset retirement obligations		(14.4	)
Total fair value of net assets	$	26.4

Pro Forma Combined Statement of Operations Data

	Three Months  Ended September 30, 2011 (unaudited)		Nine Months  Ended September 30, 2011 (unaudited)
	(in millions, except per share amounts)
Revenues	$	238.7	$	750.0
Income from operations		93.1		298.0
Net income		58.9		184.5
Basic earnings per share	$	1.20	$	3.77
Diluted earnings per share	$	1.20	$	3.77