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Stock-Based Compensation and Benefit Plans (Tables)
 12 Months Ended
Feb. 03, 2012
Employee Benefits and Share-based Compensation [Abstract]  
Stock Option Activity

 
 
Number
of
Options
 
Weighted-
Average
Exercise
Price
 
Weighted-
Average
Remaining
Contractual
Term
 
Aggregate
Intrinsic
Value
 
 
(in millions)
 
(per share)
 
(in years)
 
(in millions)
Options outstanding — January 30, 2009
 
230

 
$
31.85

 
 
 
 
Granted (a)
 
11

 
9.83

 
 
 
 
Exercised
 
—

 
12.05

 
 
 
 
Forfeited
 
—

 
14.73

 
 
 
 
Cancelled/expired
 
(36
)
 
35.59

 
 
 
 
Options outstanding — January 29, 2010
 
205

 
30.00

 
 
 
 
Granted (a)
 
17

 
14.82

 
 
 
 
Exercised
 
(1
)
 
9.18

 
 
 
 
Forfeited
 
(2
)
 
13.85

 
 
 
 
Cancelled/expired
 
(58
)
 
36.44

 
 
 
 
Options outstanding — January 28, 2011
 
161

 
26.49

 
 
 
 

Granted and assumed through acquisitions
 
28

 
13.79

 
 
 
 

Exercised
 
(4
)
 
9.38

 
 
 
 

Forfeited
 
(5
)
 
13.35

 
 
 
 

Cancelled/expired
 
(37
)
 
24.85

 
 
 
 

Options outstanding — February 3, 2012 (b)
 
143

 
25.37

 
4.2

 
$
177

Vested and expected to vest (net of estimated forfeitures) — February 3, 2012(b)
 
138

 
$
25.72

 
4.1

 
$
163

Exercisable — February 3, 2012(b)
 
108

 
$
29.02

 
2.8

 
$
54

____________________
(a) 
In Fiscal 2011 and Fiscal 2010, Dell did not convert or assume any options in connection with business acquisitions.
(b) 
For options vested and expected to vest, options exercisable, and options outstanding, the aggregate intrinsic value in the table above represents the total pre-tax intrinsic value (the difference between Dell's closing stock price on February 3, 2012 and the exercise price multiplied by the number of in-the-money options) that would have been received by the option holders had the holders exercised their options on February 3, 2012. The intrinsic value changes based on changes in the fair value of Dell's common stock.
Range of Exercise Prices for options outstanding and exercisable
 
 
Options Outstanding
 
Options Exercisable
Range of Exercise Prices
 
Number Outstanding
 
Weighted-Average Exercise Price per Share
 
Weighted-Average Remaining Contractual Life
 
Number Exercisable
 
Weighted-Average Exercise Price Per Share
 
 
(in millions)
 
 
 
(in years)
 
(in millions)
 
 
$ 0 - $9.99
 
8

 
$
7.38

 
3.9

 
3

 
$
7.42

$10.00 - $19.99
 
42

 
$
15.57

 
8.1

 
12

 
$
16.72

$20.00 - $29.99
 
45

 
$
25.86

 
1.8

 
45

 
$
25.86

$30.00 - $39.99
 
31

 
$
34.31

 
2.2

 
31

 
$
34.31

$40 and over
 
17

 
$
40.23

 
3.1

 
17

 
$
40.23

Total
 
143

 
$
25.37

 
4.2

 
108

 
$
29.02
Other information pertaining to stock options
 
 
Fiscal Year Ended
 
 
February 3,
2012
 
January 28,
2011
 
January 29,
2010
 
 
(in millions, except per option data)
Total fair value of options vested
 
$
56

 
$
13

 
$
—

Total intrinsic value of options exercised(a)
 
$
27

 
$
7

 
$
—

____________________
(a) 
The total intrinsic value of options exercised represents the total pre-tax intrinsic value (the difference between the stock price at exercise and the exercise price multiplied by the number of options exercised) that was received by the option holders who exercised their options during the fiscal year.
Assumptions for weighted average fair value of stock options
 
 
Fiscal Year Ended
 
 
February 3,
2012
 
January 28,
2011
 
January 29,
2010
Weighted-average grant date fair value of stock options granted per option
 
$
5.13

 
$
5.01

 
$
3.71

Expected term (in years)
 
4.6

 
4.5

 
4.5

Risk-free interest rate (U.S. Government Treasury Note)
 
1.9
%
 
2.2
%
 
1.8
%
Volatility
 
36
%
 
37
%
 
44
%
Dividends
 
—
%
 
—
%
 
—
%
Restricted Stock Awards
 
 
Number
of
Shares
 
Weighted-
Average
Grant Date
Fair Value
 
 
(in millions)
 
(per share)
Non-vested restricted stock:
 
 

 
 

Non-vested restricted stock balance as of January 30, 2009
 
36

 
$
22.45

Granted
 
22

 
11.39

Vested(a)
 
(13
)
 
22.78

Forfeited
 
(5
)
 
18.23

Non-vested restricted stock balance as of January 29, 2010
 
40

 
16.84

Granted
 
26

 
14.53

Vested(a)
 
(17
)
 
19.10

Forfeited
 
(7
)
 
15.21

Non-vested restricted stock balance as of January 28, 2011
 
42

 
14.71

Granted
 
22

 
15.19

Vested(a)
 
(18
)
 
16.47

Forfeited
 
(4
)
 
14.05

Non-vested restricted stock balance as of February 3, 2012
 
42

 
$
14.29

____________________
(a) 
Upon vesting of restricted stock units, some of the underlying shares are generally sold to cover the required withholding taxes. However, select participants may choose the net shares settlement method to cover withholding tax requirements. Total shares withheld were approximately 426,000, 354,000, and 157,000 for Fiscal 2012, Fiscal 2011, and Fiscal 2010, respectively. Total payments for the employee's tax obligations to the taxing authorities were $6 million, $5 million, and $2 million in Fiscal 2012, 2011, and 2010, respectively, and are reflected as a financing activity within the Consolidated Statements of Cash Flows.
Stock Based Compensation Expense
 
 
Fiscal Year Ended
 
 
February 3,
2012
 
January 28,
2011
 
January 29,
2010
 
 
(in millions)
Stock-based compensation expense:
 
 

 
 

 
 

Cost of net revenue
 
$
59

 
$
57

 
$
47

Operating expenses
 
303

 
275

 
265

Stock-based compensation expense before taxes
 
362

 
332

 
312

Income tax benefit
 
(108
)
 
(97
)
 
(91
)
Stock-based compensation expense, net of income taxes
 
$
254

 
$
235

 
$
221