Net Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2012

Net Earnings Per Share

Summary of net earnings per share

	Three months ended March 31,
	2012		2011
	(in millions, except per share amounts)
Net earnings attributable to common stockholders	$	368.4	$	282.0
Basic earnings per common share:
Weighted average common shares outstanding		65.5		71.3
Net earnings attributable to common stockholders	$	5.62	$	3.95
Diluted earnings per common share:
Weighted average common shares outstanding		65.5		71.3
Dilutive common shares—stock options		1.0		0.8
Diluted weighted average shares outstanding		66.5		72.1
Net earnings attributable to common stockholders	$	5.54	$	3.91