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Fair Value Measurements (Tables)
3 Months Ended
Apr. 29, 2011
Fair Value Measurements [Abstract]  
Fair Value, Assets and Liabilities Measured on Recurring Basis [Text Block]
 
April 29, 2011
 
January 28, 2011
 
Level 1
 
Level 2
 
Level 3
 
Total
 
Level 1
 
Level 2
 
Level 3
 
Total
 
Quoted
Prices
in Active
Markets for
Identical
Assets
 
Significant
Other
Observable
Inputs
 
Significant
Unobservable
Inputs
 
 
 
Quoted
Prices
in Active
Markets for
Identical
Assets
 
Significant
Other
Observable
Inputs
 
Significant
Unobservable
Inputs
 
 
 
 
 
 
 
 
 
(in millions)
 
 
 
 
 
 
Assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Cash equivalents:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Money market funds
$
9,579
 
 
$
 
 
$
 
 
$
9,579
 
 
$
6,261
 
 
$
 
 
$
 
 
$
6,261
 
Commercial paper
 
 
1,390
 
 
 
 
1,390
 
 
 
 
2,945
 
 
 
 
2,945
 
U.S. government and agencies
 
 
16
 
 
 
 
16
 
 
 
 
1,699
 
 
 
 
1,699
 
Debt Securities:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U.S. government and agencies
 
 
27
 
 
 
 
27
 
 
 
 
79
 
 
 
 
79
 
U.S. corporate
 
 
524
 
 
34
 
 
558
 
 
 
 
464
 
 
32
 
 
496
 
International corporate
 
 
466
 
 
 
 
466
 
 
 
 
457
 
 
 
 
457
 
Equity and other securities
 
 
113
 
 
 
 
113
 
 
 
 
109
 
 
 
 
109
 
Derivative instruments
 
 
60
 
 
 
 
60
 
 
 
 
27
 
 
 
 
27
 
Total assets
$
9,579
 
 
$
2,596
 
 
$
34
 
 
$
12,209
 
 
$
6,261
 
 
$
5,780
 
 
$
32
 
 
$
12,073
 
Liabilities:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Derivative instruments
$
 
 
$
159
 
 
$
 
 
$
159
 
 
$
 
 
$
28
 
 
$
 
 
$
28
 
Total liabilities
$
 
 
$
159
 
 
$
 
 
$
159
 
 
$
 
 
$
28
 
 
$
 
 
$
28