Net Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2011

Net Earnings Per Share

Summary of net earnings per share

		Three months ended September 30,				Nine months ended September 30,
		2011		2010		2011		2010
		(in millions, except per share amounts)
Net earnings attributable to common stockholders		$	330.9	$	48.2	$	1,100.3	$	148.9
Basic earnings per common share:
	Weighted average common shares outstanding		69.4		71.1		70.7		62.5
	Net earnings attributable to common stockholders	$	4.77	$	0.68	$	15.55	$	2.38
Diluted earnings per common share:
	Weighted average common shares outstanding		69.4		71.1		70.7		62.5
	Dilutive common shares—stock options		0.5		0.8		0.7		0.7
	Diluted weighted average shares outstanding		69.9		71.9		71.4		63.2
	Net earnings attributable to common stockholders	$	4.73	$	0.67	$	15.41	$	2.35