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Financial Instruments - Schedule of Financial Instruments by Significant Investment Category (Details) - USD ($) $ in Millions | Jan. 31, 2025 | Jan. 31, 2024
--- | --- | ---
Cash equivalents |  |
Amortized Cost | $ 1,599 | $ 1,892
Long-term |  |
Total, amortized cost | 1,424 | 1,797
Total, Gross unrealized gains | 13 | 13
Total, Gross unrealized losses | (1) | (1)
Total, fair value | 1,436 | 1,809
Commercial paper |  |
Short-term |  |
Amortized Cost | 96 | 159
Fair Value | 96 | 159
Corporate debt securities |  |
Short-term |  |
Amortized Cost | 79 | 75
Fair Value | 79 | 75
Long-term |  |
Amortized Cost | 96 | 103
Gross Unrealized Gains | 1 | 1
Gross Unrealized Losses | 0 | 0
Marketable securities, long-term | 97 | 104
U.S. government securities |  |
Short-term |  |
Amortized Cost | 74 | 70
Fair Value | 74 | 70
Long-term |  |
Amortized Cost | 52 | 24
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (1) | 0
Marketable securities, long-term | 51 | 24
Asset backed securities |  |
Short-term |  |
Amortized Cost | 19 | 28
Fair Value | 19 | 28
Long-term |  |
Amortized Cost | 71 | 59
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Marketable securities, long-term | 71 | 59
Other |  |
Short-term |  |
Amortized Cost | 19 | 22
Fair Value | 19 | 22
Long-term |  |
Amortized Cost | 8 | 11
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Marketable securities, long-term | 8 | 11
Agency mortgage-backed securities |  |
Long-term |  |
Amortized Cost | 40 | 36
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Marketable securities, long-term | 40 | 36
Mutual funds |  |
Long-term |  |
Other investments | 106 | 89
Other investments, gross unrealized gains | 12 | 12
Other investments, gross unrealized losses | 0 | (1)
Other investments, fair value | 118 | 100
Money market funds |  |
Cash equivalents |  |
Amortized Cost | 618 | 693
Fair Value | 618 | 693
Commercial paper |  |
Cash equivalents |  |
Amortized Cost | 85 | 250
Fair Value | 85 | 250
Certificates of deposit |  |
Cash equivalents |  |
Amortized Cost | 38 | 80
Fair Value | 38 | 80
U.S. government securities |  |
Cash equivalents |  |
Amortized Cost | 19 | 92
Fair Value | 19 | 92
Other |  |
Cash equivalents |  |
Amortized Cost | 4 | 6
Fair Value | $ 4 | $ 6

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