| Schedule of Cash Equivalents and Marketable 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 Equivalents | | Marketable Securities | | | | | | | | | | | | | | | (In millions) | | Corporate debt securities | $ | 4,809 | | | $ | — | | | $ | (12) | | | $ | 4,797 | | | $ | 1,087 | | | $ | 3,710 | | | Debt securities issued by the United States Treasury | 4,185 | | | 1 | | | (44) | | | 4,142 | | | — | | | 4,142 | | | Debt securities issued by United States government agencies | 1,836 | | | — | | | (2) | | | 1,834 | | | 50 | | | 1,784 | | | Money market funds | 1,777 | | | — | | | — | | | 1,777 | | | 1,777 | | | — | | | Certificates of deposit | 365 | | | — | | | — | | | 365 | | | 134 | | | 231 | | | Foreign government bonds | 140 | | | — | | | — | | | 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 Equivalents | | Marketable Securities | | | | | | | | | | | | | | | (In millions) | | Corporate debt securities | $ | 9,977 | | | $ | — | | | $ | (3) | | | $ | 9,974 | | | $ | 1,102 | | | $ | 8,872 | | | Debt securities issued by the United States Treasury | 7,314 | | | — | | | (14) | | | 7,300 | | | — | | | 7,300 | | | Debt securities issued by United States government agencies | 1,612 | | | — | | | — | | | 1,612 | | | 256 | | | 1,356 | | | Certificates of deposit | 1,561 | | | — | | | — | | | 1,561 | | | 21 | | | 1,540 | | | Money market funds | 316 | | | — | | | — | | | 316 | | | 316 | | | — | | | Foreign government bonds | 150 | | | — | | | — | | | 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 January 29, 2023 and January 30, 2022 are shown below by contractual maturity. | | | | | | | | | | | | | | | | | | | | | | | | | | January 29, 2023 | | January 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 years | 3,374 | | | 3,347 | | | 4,584 | | | 4,570 | | | | | | | | | | | Total | $ | 13,112 | | | $ | 13,055 | | | $ | 20,930 | | | $ | 20,913 | |
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| Schedule of Marketable Securities in a Continuous Unrealized Loss Position |
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 Months | | 12 Months or Greater | | Total | | | Estimated Fair Value | | Gross Unrealized Loss | | Estimated Fair Value | | Gross Unrealized Loss | | Estimated Fair Value | | Gross Unrealized Loss | | | | | | | | | | | | | | | (In millions) | | Debt securities issued by the United States Treasury | $ | 2,444 | | | $ | (21) | | | $ | 1,172 | | | $ | (23) | | | $ | 3,616 | | | $ | (44) | | | Corporate debt securities | 1,188 | | | (7) | | | 696 | | | (5) | | | 1,884 | | | (12) | | | Debt securities issued by United States government agencies | 1,307 | | | (2) | | | — | | | — | | | 1,307 | | | (2) | | | Total | $ | 4,939 | | | $ | (30) | | | $ | 1,868 | | | $ | (28) | | | $ | 6,807 | | | $ | (58) | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | January 30, 2022 | | | Less than 12 Months | | 12 Months or Greater | | Total | | | Estimated Fair Value | | Gross Unrealized Loss | | Estimated Fair Value | | Gross Unrealized Loss | | Estimated Fair Value | | Gross Unrealized Loss | | | | | | | | | | | | | | | (In millions) | | Debt securities issued by the United States Treasury | $ | 5,292 | | | $ | (14) | | | $ | — | | | $ | — | | | $ | 5,292 | | | $ | (14) | | | Corporate debt securities | 2,445 | | | (3) | | | 19 | | | — | | | 2,464 | | | (3) | | | | | | | | | | | | | | | Total | $ | 7,737 | | | $ | (17) | | | $ | 19 | | | $ | — | | | $ | 7,756 | | | $ | (17) | |
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