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Earnings Per Share (Notes)
 9 Months Ended
Nov. 02, 2012
Earnings Per Share [Abstract]  
Earnings Per Share
NOTE 13 — EARNINGS PER SHARE

Basic earnings per share is based on the weighted-average effect of all common shares issued and outstanding and is calculated by dividing net income by the weighted-average shares outstanding during the period. Diluted earnings per share is calculated by dividing net income by the weighted-average number of common shares used in the basic earnings per share calculation plus the number of common shares that would be issued assuming exercise or conversion of all potentially dilutive common shares outstanding. Dell excludes equity instruments from the calculation of diluted earnings per share if the effect of including such instruments is anti-dilutive. Accordingly, certain stock-based incentive awards have been excluded from the calculation of diluted earnings per share, totaling 132 million and 137 million common shares for the three months ended November 2, 2012, and October 28, 2011, respectively, and 125 million and 147 million for the nine months ended November 2, 2012, and October 28, 2011, respectively.
The following table sets forth the computation of basic and diluted earnings per share for the three and nine months ended November 2, 2012, and October 28, 2011:
 
 
Three Months Ended
 
Nine Months Ended
 
 
November 2,
2012
 
October 28,
2011
 
November 2,
2012
 
October 28,
2011
 
 
(in millions, except per share amounts)
Numerator:
 
 

 
 

 
 
 
 
Net income
 
$
475

 
$
893

 
$
1,842

 
$
2,728

Denominator:
 
 

 
 

 
 
 
 
Weighted-average shares outstanding:
 
 

 
 

 
 
 
 
Basic
 
1,735

 
1,813

 
1,747

 
1,860

Effect of dilutive options, restricted stock units, restricted stock, and other
 
7

 
15

 
10

 
14

Diluted
 
1,742

 
1,828

 
1,757

 
1,874

Earnings per share:
 
 

 
 

 
 
 
 
Basic
 
$
0.27

 
$
0.49

 
$
1.05

 
$
1.47

Diluted
 
$
0.27

 
$
0.49

 
$
1.05

 
$
1.46