v3.22.2.2
Cash Equivalents and Marketable Securities (Tables)
 6 Months Ended
Jul. 31, 2022
Investments, Debt and Equity Securities [Abstract]  
Schedule of cash equivalents and marketable securities
The following is a summary of cash equivalents and marketable securities as of July 31, 2022 and January 30, 2022:
 July 31, 2022
Amortized
Cost		Unrealized
Gain		Unrealized
Loss		Estimated
Fair Value		Reported as
 Cash EquivalentsMarketable Securities
 (In millions)
Corporate debt securities$8,016 $— $(18)$7,998 $1,115 $6,883 
Debt securities issued by the United States Treasury4,068 1 (39)4,030 108 3,922 
Debt securities issued by United States government agencies3,056 — (2)3,054 564 2,490 
Certificates of deposit856 — — 856 128 728 
Money market funds639 — — 639 639 — 
Foreign government bonds15 — — 15 15 — 
Total$16,650 $1 $(59)$16,592 $2,569 $14,023 
 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 amortized cost and estimated fair value of cash equivalents and marketable securities as of July 31, 2022 and January 30, 2022 are shown below by contractual maturity.
July 31, 2022January 30, 2022
Amortized CostEstimated Fair ValueAmortized CostEstimated Fair Value
(In millions)
Less than one year$12,628 $12,607 $16,346 $16,343 
Due in 1 - 5 years4,022 3,985 4,584 4,570 
Total$16,650 $16,592 $20,930 $20,913 
Schedule of investments 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:
July 31, 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$2,793 $(39)$— $— $2,793 $(39)
Debt securities issued by United States government agencies2,312 (2)— — 2,312 (2)
Corporate debt securities1,925 (17)105 (1)2,030 (18)
Total$7,030 $(58)$105 $(1)$7,135 $(59)
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)