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Net Income Per Share (Tables)
 9 Months Ended
Sep. 30, 2013
Earnings Per Share [Abstract]  
Schedule Of Earnings Per Share Basic And Diluted
The following table sets forth the computation of basic and diluted net income per share (in millions except per share amounts):

 
Three months ended September 30,
 
Nine months ended September 30,
 
2013
 
2012
 
2013
 
2012
NUMERATOR:
 
 
 
 
 
 
 
Net income
$
259

 
$
16

 
$
542

 
$
343

Incremental income effect of
  interest on 5.25% convertible notes
1

 
—

 
2

 
2

Net income after assumed conversion
$
260

 
$
16

 
$
544

 
$
345

 
 
 
 
 
 
 
 
DENOMINATOR:
 

 
 

 
 

 
 

Weighted-average shares outstanding, basic
703

 
739

 
714

 
756

Dilutive effect of Employee stock options and
  restricted stock units
2

 
1

 
2

 
—

Dilutive effect of 5.25% convertible notes
6

 
—

 
6

 
6

Adjusted weighted-average shares outstanding, diluted
711

 
740

 
722

 
762

 
 
 
 
 
 
 
 
NET INCOME PER SHARE:
 

 
 

 
 

 
 

Basic
$
0.37

 
$
0.02

 
$
0.76

 
$
0.45

Diluted
$
0.37

 
$
0.02

 
$
0.75

 
$
0.45

 
 
 
 
 
 
 
 
Potentially dilutive amounts excluded from calculations:
 

 
 

 
 

 
 

Stock options and restricted stock units
9

 
32

 
10

 
40

5.25% convertible notes
—

 
6

 
—

 
—