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FAIR VALUE MEASUREMENTS - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions | Aug. 31, 2025 | May 31, 2025
--- | --- | ---
Assets, Fair Value Disclosure [Abstract] |  |
SHORT-TERM INVESTMENTS | $ 1,551 | $ 1,687
Fair Value, Measurements, Recurring |  |
Assets, Fair Value Disclosure [Abstract] |  |
Cash | 1,409 | 1,221
ASSETS AT FAIR VALUE | 8,575 | 9,151
CASH AND EQUIVALENTS | 7,024 | 7,464
SHORT-TERM INVESTMENTS | 1,551 | 1,687
Fair Value, Measurements, Recurring | Level 1 | U.S. Treasury securities |  |
Assets, Fair Value Disclosure [Abstract] |  |
ASSETS AT FAIR VALUE | 897 | 1,046
CASH AND EQUIVALENTS | 0 | 0
SHORT-TERM INVESTMENTS | 897 | 1,046
Fair Value, Measurements, Recurring | Level 2 |  |
Assets, Fair Value Disclosure [Abstract] |  |
ASSETS AT FAIR VALUE | 6,269 | 6,884
CASH AND EQUIVALENTS | 5,615 | 6,243
SHORT-TERM INVESTMENTS | 654 | 641
Fair Value, Measurements, Recurring | Level 2 | Commercial paper and bonds |  |
Assets, Fair Value Disclosure [Abstract] |  |
ASSETS AT FAIR VALUE | 672 | 675
CASH AND EQUIVALENTS | 35 | 45
SHORT-TERM INVESTMENTS | 637 | 630
Fair Value, Measurements, Recurring | Level 2 | Money market funds |  |
Assets, Fair Value Disclosure [Abstract] |  |
ASSETS AT FAIR VALUE | 5,309 | 5,902
CASH AND EQUIVALENTS | 5,309 | 5,902
SHORT-TERM INVESTMENTS | 0 | 0
Fair Value, Measurements, Recurring | Level 2 | Time deposits |  |
Assets, Fair Value Disclosure [Abstract] |  |
ASSETS AT FAIR VALUE | 271 | 297
CASH AND EQUIVALENTS | 271 | 295
SHORT-TERM INVESTMENTS | 0 | 2
Fair Value, Measurements, Recurring | Level 2 | U.S. Agency securities |  |
Assets, Fair Value Disclosure [Abstract] |  |
ASSETS AT FAIR VALUE | 17 | 10
CASH AND EQUIVALENTS | 0 | 1
SHORT-TERM INVESTMENTS | $ 17 | $ 9

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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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