Fair Value of Financial Assets and Liabilities (Tables)

6 Months Ended

Jul. 27, 2014

Notes to financial statements [Abstract]

Financial assets measured at Fair Value

			Fair Value Measurement as of July 27, 2014 Using
			Quoted Prices  in Active Markets for Identical Assets		Significant Other Observable Inputs
	July 27, 2014		(Level 1)		(Level 2)
	(In thousands)
Corporate debt securities (1)	$	2,043,430	$	—	$	2,043,430
Debt securities issued by United States government agencies (2)	700,161		—		700,161
Debt securities issued by United States Treasury (3)	587,311		—		587,311
Asset-backed securities (3)	411,528		—		411,528
Mortgage-backed securities issued by government-sponsored enterprises (3)	261,422		—		261,422
Money market funds (4)	119,491		119,491		—
Total cash equivalents and marketable securities	$	4,123,343	$	119,491	$	4,003,852

(1) Includes $96.2 million in cash equivalents and $1.95 billion in marketable securities on the Condensed Consolidated Balance Sheet.

(2) Includes $36.7 million in cash equivalents and $663.5 million in marketable securities on the Condensed Consolidated Balance Sheet.

(3)   Included in marketable securities on the Condensed Consolidated Balance Sheet.

(4) Included in cash equivalents on the Condensed Consolidated Balance Sheet