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NET INCOME PER SHARE
 6 Months Ended
Jun. 30, 2013
Earnings Per Share [Abstract]  
NET INCOME PER SHARE
NET INCOME PER SHARE

The following table sets forth the computation of basic and diluted net income per share (in millions except per share amounts):

 
Three months ended June 30,
 
Six months ended June 30,
 
2013
 
2012
 
2013
 
2012
NUMERATOR:
 
 
 
 
 
 
 
Net income
$
224

 
$
228

 
$
283

 
$
327

Incremental income effect of
  interest on 5.25% convertible notes
1

 
1

 
1

 
1

Net income after assumed conversion
$
225

 
$
229

 
$
284

 
$
328

 
 
 
 
 
 
 
 
DENOMINATOR:
 

 
 

 
 

 
 

Weighted-average shares outstanding, basic
714

 
757

 
719

 
764

Dilutive effect of Employee stock options and
  restricted stock units
2

 
1

 
2

 
1

Dilutive effect of 5.25% convertible notes
6

 
6

 
6

 
6

Adjusted weighted-average shares outstanding, diluted
722

 
764

 
727

 
771

 
 
 
 
 
 
 
 
NET INCOME PER SHARE:
 

 
 

 
 

 
 

Basic
$
0.31

 
$
0.30

 
$
0.39

 
$
0.43

Diluted
$
0.31

 
$
0.30

 
$
0.39

 
$
0.43

 
 
 
 
 
 
 
 
Potentially dilutive amounts excluded from calculations:
 

 
 

 
 

 
 

Stock options and restricted stock units
10

 
42

 
15

 
43