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Financial Instruments - Cost and Fair Value of Financial Instruments (Details) - USD ($) $ in Millions | Jul. 31, 2023 | Jan. 31, 2023
--- | --- | ---
Cash equivalents |  |
Amortized Cost | $ 1,714 | $ 1,947
Long-term |  |
Total, Amortized Cost | 1,492 | 1,279
Total, Gross unrealized gains | 12 | 7
Total, Gross unrealized losses | (1) | (5)
Total, Fair value | 1,503 | 1,281
Commercial paper |  |
Short-term |  |
Amortized Cost | 179 | 42
Marketable securities, short-term | 179 | 42
Corporate debt securities |  |
Short-term |  |
Amortized Cost | 63 | 44
Marketable securities, short-term | 63 | 44
Long-term |  |
Amortized Cost | 104 | 45
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Marketable securities, long-term | 104 | 45
U.S. government securities |  |
Cash equivalents |  |
Cash Equivalents, Fair Value | 44 |
Short-term |  |
Amortized Cost | 61 | 17
Marketable securities, short-term | 61 | 17
Long-term |  |
Amortized Cost | 29 | 35
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Marketable securities, long-term | 29 | 35
Asset-backed securities |  |
Short-term |  |
Amortized Cost | 29 | 19
Marketable securities, short-term | 29 | 19
Long-term |  |
Amortized Cost | 47 | 13
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Marketable securities, long-term | 47 | 13
Other |  |
Short-term |  |
Amortized Cost | 27 | 3
Marketable securities, short-term | 27 | 3
Long-term |  |
Amortized Cost | 13 | 9
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Marketable securities, long-term | 13 | 9
Agency mortgage backed securities |  |
Long-term |  |
Amortized Cost | 26 |
Gross Unrealized Gains | 0 |
Gross Unrealized Losses | 0 |
Marketable securities, long-term | 26 |
Mutual funds |  |
Long-term |  |
Other investments | 86 | 81
Other investments, gross unrealized gains | 12 | 6
Other investments, gross unrealized losses | (1) | (1)
Other investments, fair value | 97 | 86
Convertible debt securities |  |
Long-term |  |
Other investments |  | 3
Other investments, gross unrealized gains |  | 1
Other investments, gross unrealized losses |  | (2)
Other investments, fair value |  | 2
Strategic investments derivative asset |  |
Long-term |  |
Other investments |  | 2
Other investments, gross unrealized gains |  | 0
Other investments, gross unrealized losses |  | (2)
Other investments, fair value |  | 0
Money market funds |  |
Cash equivalents |  |
Amortized Cost | 499 | 737
Cash Equivalents, Fair Value | 499 | 737
Commercial paper |  |
Cash equivalents |  |
Amortized Cost | 194 | 169
Cash Equivalents, Fair Value | 194 | 169
Certificates of deposit |  |
Cash equivalents |  |
Amortized Cost | 75 | 35
Cash Equivalents, Fair Value | 75 | 35
U.S. government securities |  |
Cash equivalents |  |
Amortized Cost | 44 | 13
Cash Equivalents, Fair Value | 44 | 13
Municipal bonds |  |
Cash equivalents |  |
Amortized Cost | 11 |
Cash Equivalents, Fair Value | 11 |
Other |  |
Cash equivalents |  |
Amortized Cost | 5 | 12
Cash Equivalents, Fair Value | $ 5 | $ 12

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