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Fair Value Measurements (Tables)
 12 Months Ended
Jan. 31, 2015
Fair Value Disclosures [Abstract]  
Assets and Liabilities Measured at Fair Value on Recurring Basis

The following table provides a summary of the recognized assets and liabilities that are measured at fair value on a recurring basis:
 
 
 
 
 
 
 
 
 
As of January 31, 2015
 
As of February 1, 2014
  
 
(in millions)
  
 
Level 1
 
Level 2
 
Level 3
 
Level 1
 
Level 2
 
Level 3
Assets
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
Available-for-sale securities
 
$
 —
 
 
$
6
 
 
$
 —
 
 
$
 —
 
 
$
6
 
 
$
 —
 
Short-term investments
 
 
—
 
 
 
—
 
 
 
—
 
 
 
—
 
 
 
9
 
 
 
—
 
Total Assets
 
$
—
 
 
$
6
 
 
$
—
 
 
$
—
 
 
$
15
 
 
$
—
 
Liabilities
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
Foreign exchange forward contracts
 
 
—
 
 
 
5
 
 
 
—
 
 
 
—
 
 
 
2
 
 
 
—
 
Total Liabilities
 
$
—
 
 
$
5
 
 
$
—
 
 
$
—
 
 
$
2
 
 
$
—
 
Carrying Value and Estimated Fair Value of Long-Term Debt
The carrying value and estimated fair value of long-term debt and obligations under capital leases were as follows:
 
 
 
 
 
2014
 
2013
  
 
(in millions)
Carrying value
 
$
134
 
 
$
139
 
Fair value
 
$
163
 
 
$
159