Net Income Per Common Share (Tables)

9 Months Ended

Sep. 30, 2011

Net Income Per Common Share [Abstract]

Net income per common share basic and diluted

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2011		2010		2011		2010
	(in millions)
Basic:
Income from continuing operations	$	160.2	$	141.7	$	477.4	$	301.9
Income from discontinued operations		—		—		190.3		—
Net income applicable to common stock	$	160.2	$	141.7	$	667.7	$	301.9
Weighted average common shares outstanding		162.3		165.3		164.3		166.9
Diluted:
Income from continuing operations	$	160.2	$	141.7	$	477.4	$	301.9
Income from discontinued operations		—		—		190.3		—
Net income applicable to common stock	$	160.2	$	141.7	$	667.7	$	301.9
Weighted average common shares outstanding		162.3		165.3		164.3		166.9
Incremental shares from assumed conversions:
Options, performance-based stock awards and other employee awards		1.7		1.8		2.2		1.9
Weighted average common shares and common share equivalents		164.0		167.1		166.5		168.8