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CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES (Tables) | 12 Months Ended
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May 31, 2019
Cash Cash Equivalents And Short Term Investments [Abstract] |
Cash, Cash Equivalents and Marketable Securities |
|  | May 31, |
(in millions) |  | 2019 |  |  | 2018 |
Corporate debt securities and other |  | $ | 22,242 |  |  | $ | 44,302 |
Commercial paper debt securities |  |  | — |  |  |  | 1,647 |
Money market funds |  |  | 5,700 |  |  |  | 6,500 |
Total investments |  | $ | 27,942 |  |  | $ | 52,449 |
Investments classified as cash equivalents |  | $ | 10,629 |  |  | $ | 6,808 |
Investments classified as marketable securities |  | $ | 17,313 |  |  | $ | 45,641 |

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- Definition Tabular disclosure of the components of cash, cash equivalents, and investments. + References No definition available. + Details
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