v3.24.0.1
Cash Equivalents and Marketable Securities (Tables)
 12 Months Ended
Jan. 28, 2024
Investments, Debt and Equity Securities [Abstract]  
Schedule of Cash Equivalents and Marketable Securities
The following is a summary of cash equivalents and marketable securities:

 Jan 28, 2024
Amortized
Cost		Unrealized
Gain		Unrealized
Loss		Estimated
Fair Value		Reported as
 Cash EquivalentsMarketable Securities
 (In millions)
Corporate debt securities$10,126 $31 $(5)$10,152 $2,231 $7,921 
Debt securities issued by the U.S. Treasury9,517 17 (10)9,524 1,315 8,209 
Debt securities issued by U.S. government agencies2,326 8 (1)2,333 89 2,244 
Money market funds3,031 — — 3,031 3,031 — 
Certificates of deposit510 — — 510 294 216 
Foreign government bonds174 — — 174 60 114 
Total$25,684 $56 $(16)$25,724 $7,020 $18,704 

 Jan 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 U.S. Treasury4,185 1 (44)4,142 — 4,142 
Debt securities issued by U.S. 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 
The amortized cost and estimated fair value of cash equivalents and marketable securities are shown below by contractual maturity.
 Jan 28, 2024Jan 29, 2023
 Amortized
Cost		Estimated
Fair Value		Amortized
Cost		Estimated
Fair Value
 (In millions)
Less than one year$16,336 $16,329 $9,738 $9,708 
Due in 1 - 5 years9,348 9,395 3,374 3,347 
Total$25,684 $25,724 $13,112 $13,055 
Schedule of Marketable Securities in a Continuous Unrealized Loss Position
The following tables provide the breakdown of unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous loss position:
Jan 28, 2024
 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 U.S. Treasury$3,343 $(5)$1,078 $(5)$4,421 $(10)
Corporate debt securities1,306 (3)618 (2)1,924 (5)
Debt securities issued by U.S. government agencies670 (1)— — 670 (1)
Total$5,319 $(9)$1,696 $(7)$7,015 $(16)
Jan 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 U.S. Treasury$2,444 $(21)$1,172 $(23)$3,616 $(44)
Corporate debt securities1,188 (7)696 (5)1,884 (12)
Debt securities issued by U.S. government agencies1,307 (2)— — 1,307 (2)
Total$4,939 $(30)$1,868 $(28)$6,807 $(58)