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FAIR VALUE MEASUREMENTS - Financial Assets Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions | May 31, 2025 | May 31, 2024
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Assets, Fair Value Disclosure [Abstract] |  |
SHORT-TERM INVESTMENTS | $ 1,687 | $ 1,722
Fair Value, Measurements, Recurring |  |
Assets, Fair Value Disclosure [Abstract] |  |
Cash | 1,221 | 1,222
ASSETS AT FAIR VALUE | 9,151 | 11,582
CASH AND EQUIVALENTS | 7,464 | 9,860
SHORT-TERM INVESTMENTS | 1,687 | 1,722
Fair Value, Measurements, Recurring | Level 1 | U.S. Treasury securities |  |
Assets, Fair Value Disclosure [Abstract] |  |
ASSETS AT FAIR VALUE | 1,046 | 1,175
CASH AND EQUIVALENTS | 0 | 155
SHORT-TERM INVESTMENTS | 1,046 | 1,020
Fair Value, Measurements, Recurring | Level 2 |  |
Assets, Fair Value Disclosure [Abstract] |  |
ASSETS AT FAIR VALUE | 6,884 | 9,185
CASH AND EQUIVALENTS | 6,243 | 8,483
SHORT-TERM INVESTMENTS | 641 | 702
Fair Value, Measurements, Recurring | Level 2 | Commercial paper and bonds |  |
Assets, Fair Value Disclosure [Abstract] |  |
ASSETS AT FAIR VALUE | 675 | 591
CASH AND EQUIVALENTS | 45 | 17
SHORT-TERM INVESTMENTS | 630 | 574
Fair Value, Measurements, Recurring | Level 2 | Money market funds |  |
Assets, Fair Value Disclosure [Abstract] |  |
ASSETS AT FAIR VALUE | 5,902 | 8,119
CASH AND EQUIVALENTS | 5,902 | 8,119
SHORT-TERM INVESTMENTS | 0 | 0
Fair Value, Measurements, Recurring | Level 2 | Time deposits |  |
Assets, Fair Value Disclosure [Abstract] |  |
ASSETS AT FAIR VALUE | 297 | 440
CASH AND EQUIVALENTS | 295 | 347
SHORT-TERM INVESTMENTS | 2 | 93
Fair Value, Measurements, Recurring | Level 2 | U.S. Agency securities |  |
Assets, Fair Value Disclosure [Abstract] |  |
ASSETS AT FAIR VALUE | 10 | 35
CASH AND EQUIVALENTS | 1 | 0
SHORT-TERM INVESTMENTS | $ 9 | $ 35

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 852 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481372/852-10-55-10 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 830 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479168/946-830-55-12 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(4)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 45 -Paragraph 21 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477796/946-210-45-21 Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 45 -Paragraph 20 -SubTopic 210 -Topic 946 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477796/946-210-45-20 + Details
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