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Earnings Per Share (Notes)
 3 Months Ended
Mar. 31, 2013
Earnings Per Share [Abstract]  
Earnings Per Share [Text Block]
EARNINGS PER SHARE

We calculate basic earnings per share by dividing net income by the weighted average number of common shares outstanding. The following table shows the computation of basic and diluted earnings per share:
 
Three Months Ended March 31,
(in millions, except per share data)
2013
2012
Net income
$
7

$
124

 
 
 
Basic weighted average shares outstanding
848

843

Dilutive effect of share based awards
7

4

Diluted weighted average shares outstanding
855

847

 
 
 
Basic earnings per share
$
0.01

$
0.15

Diluted earnings per share
$
0.01

$
0.15

 
 
 
Antidilutive common stock equivalents excluded from diluted earnings per share
16

21