Earnings Per Common Share

9 Months Ended

Sep. 30, 2011

Earnings Per Common Share

Earnings Per Common Share

12.  Earnings Per Common Share

The computations of the basic and diluted per share amounts were as follows:

	For the three months ended September 30,					For the nine months ended September 30,
	2011			2010		2011		2010
	(in millions, except per share data)
Net income	$	66.3		$	151.3	$	579.3	$	499.1
Subtract:
Net income (loss) attributable to noncontrolling interest	(5.6		)	0.9		36.6		7.4
Preferred stock dividends	8.2			8.2		24.7		24.7
Net income available to common stockholders	$	63.7		$	142.2	$	518.0	$	467.0
Weighted-average shares outstanding
Basic	311.9			320.7		317.7		320.2
Dilutive effects:
Stock options	1.0			0.8		1.3		0.8
Restricted stock units	1.5			1.5		1.5		1.4
Performance share awards	0.4			0.3		0.4		0.3
Diluted	314.8			323.3		320.9		322.7
Net income per common share:
Basic	$	0.20		$	0.44	$	1.63	$	1.46
Diluted	$	0.20		$	0.44	$	1.61	$	1.45

The calculation of diluted earnings per share for the three and nine months ended September 30, 2011 and 2010, excludes the incremental effect related to certain outstanding stock-based compensation grants due to their anti-dilutive effect.