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Earnings (Loss) Per Share (Tables)
 3 Months Ended
Mar. 31, 2012
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
The following table shows the computation of basic and diluted earnings (loss) per share:
 
Three Months Ended March 31,
(in millions, except per share data)
2012
2011
Net income (loss)
$
124

$
(318
)
 
 
 
Basic weighted average shares outstanding
843

837

Dilutive effect of share based awards
4

—

Diluted weighted average shares outstanding
847

837

 
 
 
Basic earnings (loss) per share
$
0.15

$
(0.38
)
Diluted earnings (loss) per share
$
0.15

$
(0.38
)
 
 
 
Antidilutive common stock equivalents excluded from diluted earnings (loss) per share
21
32