Cash Equivalents and Marketable Securities (Tables)

3 Months Ended

Apr. 26, 2020

Investments, Debt and Equity Securities [Abstract]

Cash Equivalents and Marketable Securities

The following is a summary of cash equivalents and marketable securities as of April 26, 2020 and January 26, 2020:

	April 26, 2020
	Amortized Cost		Unrealized Gain		Unrealized Loss		Estimated Fair Value		Reported as
									Cash Equivalents		Marketable Securities
	(In millions)
Money market funds	$	11,128	$	—	$	—	$	11,128	$	11,128	$	—
Corporate debt securities	3,238		—		—		3,238		2,951		287
Foreign government bonds	870		—		—		870		870		—
Certificates of deposit	582		—		—		582		222		360
Debt securities issued by United States government agencies	381		—		—		381		168		213
Total	$	16,199	$	—	$	—	$	16,199	$	15,339	$	860

	January 26, 2020
	Amortized Cost		Unrealized Gain		Unrealized Loss		Estimated Fair Value		Reported as
									Cash Equivalents		Marketable Securities
	(In millions)
Money market funds	$	7,507	$	—	$	—	$	7,507	$	7,507	$	—
Debt securities issued by the United States Treasury	1,358		—		—		1,358		1,358		—
Debt securities issued by United States government agencies	1,096		—		—		1,096		1,096		—
Corporate debt securities	592		—		—		592		592		—
Foreign government bonds	200		—		—		200		200		—
Certificates of deposit	27		—		—		27		27
Asset-backed securities	1		—		—		1		—		1
Total	$	10,781	$	—	$	—	$	10,781	$	10,780	$	1