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Fair Value of Financial Assets and Liabilities
12 Months Ended
Jan. 28, 2018
Notes to financial statements [Abstract]  
Fair Value of Financial Assets and Liabilities
Fair Value of Financial Assets and Liabilities
The fair values of our financial assets and liabilities are determined using quoted market prices of identical assets or quoted market prices of similar assets from active markets. We classify securities within Level 1 when the fair value is obtained from real time quotes in active markets involving identical securities. We classify securities within Level 2 when pricing is obtained from real time quotes of similar securities in active markets or alternative pricing sources and models utilizing market observable inputs to determine fair value. There were no significant transfers between Levels 1 and 2 for fiscal year 2018. Level 3 assets are based on unobservable inputs to the valuation methodology and include our own data about assumptions market participants would use in pricing the asset or liability based on the best information available under the circumstances. We did not have any securities classified as Level 3 as of January 28, 2018.
 
 
Fair Value at
 
Pricing Category
 
January 28, 2018
 
January 29, 2017
 
 
 
(In millions)
Assets
 
 
 
 
 
Cash equivalents and marketable securities:
 
 
 
 
 
Money market funds
Level 1
 
$
3,789

 
$
321

Corporate debt securities
Level 2
 
$
1,295

 
$
2,388

Debt securities of U.S. government agencies
Level 2
 
$
815

 
$
1,188

Debt securities issued by the United States Treasury
Level 2
 
$
573

 
$
850

Asset-backed securities
Level 2
 
$
252

 
$
489

Mortgage-backed securities issued by United States government-sponsored enterprises
Level 2
 
$
130

 
$
162

Foreign government bonds
Level 2
 
$
41

 
$
70

 
 
 
 
 
 
Liabilities
 
 
 
 
 
Current liability:
 
 
 
 
 
1.00% Convertible Senior Notes (1)
Level 2
 
$
189

 
$
4,474

Other noncurrent liabilities:
 
 
 
 
 
2.20% Notes Due 2021 (1)
Level 2
 
$
982

 
$
975

3.20% Notes Due 2026 (1)
Level 2
 
$
986

 
$
961

Interest rate swap (2)
Level 2
 
$

 
$
2


(1)
These liabilities are carried on our Consolidated Balance Sheets at their original issuance value, net of unamortized debt discount and issuance costs, and are not marked to fair value each period. Refer to Note 11 of these Notes to the Consolidated Financial Statements for additional information.
(2)
In January 2018, we terminated the interest rate swap. Refer to Note 9 of these Notes to Consolidated Financial Statements for additional information.