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Fair Value of Financial Assets and Liabilities
6 Months Ended
Jul. 29, 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 review fair value hierarchy classification on a quarterly basis. There were no significant transfers between Levels 1 and 2 financial assets and liabilities for the second quarter of fiscal year 2019. Level 3 financial assets and liabilities 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.
 
 
Fair Value at
 
Pricing Category
 
July 29, 2018
 
January 28, 2018
 
 
 
(In millions)
Assets
 
 
 
 
 
Cash equivalents and marketable securities:
 
 
 
Corporate debt securities
Level 2
 
$
2,484

 
$
1,295

Debt securities issued by the United States Treasury
Level 2
 
$
2,410

 
$
573

Debt securities of United States government agencies
Level 2
 
$
1,987

 
$
815

Money market funds
Level 1
 
$
483

 
$
3,789

Asset-backed securities
Level 2
 
$
204

 
$
252

Mortgage-backed securities issued by United States government-sponsored enterprises
Level 2
 
$
108

 
$
130

Foreign government bonds
Level 2
 
$
32

 
$
41

 
 
 
 
 
 
Liabilities
 
 
 
 
 
Current liability:
 
 
 
 
 
1.00% Convertible Senior Notes (1)
Level 2
 
$
175

 
$
189

Other noncurrent liabilities:
 
 
 
 
 
2.20% Notes Due 2021 (1)
Level 2
 
$
970

 
$
982

3.20% Notes Due 2026 (1)
Level 2
 
$
970

 
$
986


(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 12 of these Notes to Condensed Consolidated Financial Statements for additional information.