v3.22.4
Cash Equivalents and Marketable Securities
 12 Months Ended
Jan. 29, 2023
Investments, Debt and Equity Securities [Abstract]  
Cash Equivalents and Marketable Securities Cash Equivalents and Marketable Securities
Our cash equivalents and marketable securities related to debt securities are classified as “available-for-sale” debt securities.
The following is a summary of cash equivalents and marketable securities as of January 29, 2023 and January 30, 2022:
 January 29, 2023
Amortized
Cost		Unrealized
Gain		Unrealized
Loss		Estimated
Fair Value		Reported as
 Cash EquivalentsMarketable Securities
 (In millions)
Corporate debt securities$4,809 $— $(12)$4,797 $1,087 $3,710 
Debt securities issued by the United States Treasury4,185 1 (44)4,142 — 4,142 
Debt securities issued by United States government agencies1,836 — (2)1,834 50 1,784 
Money market funds1,777 — — 1,777 1,777 — 
Certificates of deposit365 — — 365 134 231 
Foreign government bonds140 — — 140 100 40 
Total$13,112 $1 $(58)$13,055 $3,148 $9,907 
 January 30, 2022
Amortized
Cost		Unrealized
Gain		Unrealized
Loss		Estimated
Fair Value		Reported as
 Cash EquivalentsMarketable Securities
 (In millions)
Corporate debt securities$9,977 $— $(3)$9,974 $1,102 $8,872 
Debt securities issued by the United States Treasury7,314 — (14)7,300 — 7,300 
Debt securities issued by United States government agencies1,612 — — 1,612 256 1,356 
Certificates of deposit1,561 — — 1,561 21 1,540 
Money market funds316 — — 316 316 — 
Foreign government bonds150 — — 150 — 150 
Total$20,930 $— $(17)$20,913 $1,695 $19,218 
The following tables provide the breakdown of unrealized losses as of January 29, 2023 and January 30, 2022, aggregated by investment category and length of time that individual securities have been in a continuous loss position:
January 29, 2023
 Less than 12 Months12 Months or GreaterTotal
 Estimated Fair ValueGross Unrealized LossEstimated Fair ValueGross Unrealized LossEstimated Fair ValueGross Unrealized Loss
 (In millions)
Debt securities issued by the United States Treasury$2,444 $(21)$1,172 $(23)$3,616 $(44)
Corporate debt securities1,188 (7)696 (5)1,884 (12)
Debt securities issued by United States government agencies1,307 (2)— — 1,307 (2)
Total$4,939 $(30)$1,868 $(28)$6,807 $(58)
January 30, 2022
 Less than 12 Months12 Months or GreaterTotal
 Estimated Fair ValueGross Unrealized LossEstimated Fair ValueGross Unrealized LossEstimated Fair ValueGross Unrealized Loss
 (In millions)
Debt securities issued by the United States Treasury$5,292 $(14)$— $— $5,292 $(14)
Corporate debt securities2,445 (3)19 — 2,464 (3)
Total$7,737 $(17)$19 $— $7,756 $(17)
The gross unrealized losses are related to fixed income securities, driven primarily by changes in interest rates. Net realized 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 January 29, 2023 and January 30, 2022 are shown below by contractual maturity.
 January 29, 2023January 30, 2022
 Amortized
Cost		Estimated
Fair Value		Amortized
Cost		Estimated
Fair Value
 (In millions)
Less than one year$9,738 $9,708 $16,346 $16,343 
Due in 1 - 5 years3,374 3,347 4,584 4,570 
Total$13,112 $13,055 $20,930 $20,913