Cash Equivalents and Marketable Securities

6 Months Ended

Jul. 26, 2020

Investments, Debt and Equity Securities [Abstract]

Cash Equivalents and Marketable Securities

Cash Equivalents and Marketable Securities 

Our cash equivalents and marketable securities are classified as “available-for-sale” debt securities.

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

	July 26, 2020
	Amortized Cost		Unrealized Gain		Unrealized Loss		Estimated Fair Value		Reported as
									Cash Equivalents		Marketable Securities
	(In millions)
Corporate debt securities	$	3,494	$	3	$	—	$	3,497	$	515	$	2,982
Debt securities issued by United States government agencies	2,101		1		—		2,102		50		2,052
Money market funds	2,053		—		—		2,053		2,053		—
Debt securities issued by the United States Treasury	1,956		—		—		1,956		—		1,956
Certificates of deposit	893		—		—		893		342		551
Foreign government bonds	256		—		—		256		90		166
Total	$	10,753	$	4	$	—	$	10,757	$	3,050	$	7,707

	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

Net realized gains and unrealized gains and losses were not significant for all periods presented.

The amortized cost and estimated fair value of cash equivalents and marketable securities as of July 26, 2020 and January 26, 2020 are shown below by contractual maturity.

	July 26, 2020				January 26, 2020
	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
	(In millions)
Less than one year	$	10,027	$	10,028	$	10,781	$	10,781
Due in 1 - 5 years	726		729		—		—
Total	$	10,753	$	10,757	$	10,781	$	10,781