Earnings Per Share

12 Months Ended

Dec. 31, 2011

Earnings Per Share [Abstract]

Earnings Per Share

Note 20: Earnings Per Share

Basic earnings per share excludes dilution and is computed by dividing income available to common shareholders by the weighted average number of common shares outstanding during the period. Diluted earnings per share reflects the dilutive effect of all stock options and other items outstanding during the period that could potentially result in the issuance of common stock. For the years ended December 31, 2011, 2010 and 2009, there were 3,797,548, 4,526,442, and 7,401,350, respectively, of stock options outstanding that were not included in the diluted earnings per share calculation because they were antidilutive.

The following table presents the computation of basic and diluted earnings per share for the years ended December 31, 2011, 2010 and 2009:

	Years Ended December 31,
$ in millions except share and per share amounts	2011			2010		2009
Net income (loss)	$	(1,319	)	$	53	$	634
Net income (loss) available to common shareholders	$	(1,319	)	$	53	$	623
Basic weighted average shares(1)		197,019,968			202,421,433		208,156,622
Effect of common stock equivalents:
Stock options		—			599,701		—
Diluted weighted average shares		197,019,968			203,021,134		208,156,622
Net income (loss) per common share:
Basic	$	(6.69	)	$	0.26	$	2.99
Diluted	$	(6.69	)	$	0.26	$	2.99

⁽¹⁾— Includes 5,080,742, 5,325,428 and 5,259,561 of unvested restricted stock and units that receive nonforfeitable dividends or dividend equivalents for the years ended December 31, 2011, 2010 and 2009, respectively.