Net Income Per Common Share (Tables)

6 Months Ended

Jun. 30, 2011

Net Income Per Common Share [Abstract]

Net income per common share basic and diluted

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2011		2010		2011		2010
			(in millions)
Basic:
Income from continuing operations	$	161.4	$	41.6	$	317.2	$	160.2
Income from discontinued operations		—		—		190.3		—
Net income applicable to common stock	$	161.4	$	41.6	$	507.5	$	160.2
Weighted average common shares outstanding		165.4		167.8		165.2		167.7
Diluted:
Income from continuing operations	$	161.4	$	41.6	$	317.2	$	160.2
Income from discontinued operations		—		—		190.3		—
Net income applicable to common stock	$	161.4	$	41.6	$	507.5	$	160.2
Weighted average common shares outstanding		165.4		167.8		165.2		167.7
Incremental shares from assumed conversions:
Options, performance-based stock awards and other employee awards		2.3		1.9		2.5		1.9
Weighted average common shares and common share equivalents		167.7		169.7		167.7		169.6