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TAX BENEFITS FROM EXERCISES OF STOCK OPTIONS AND VESTING OF RESTRICTED STOCK-BASED AWARDS (Details) - USD ($) $ in Millions | 12 Months Ended
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May 31, 2019 | May 31, 2018 | May 31, 2017
Tax Benefits from Exercise of Stock Options and Vesting of Restricted Stock-Based Awards [Abstract] |  |  |
Total cash received as a result of option exercises | $ 2,000 | $ 2,300 | $ 2,100
Aggregate intrinsic value of vesting of restricted stock-based awards and options exercised | 3,100 | 3,000 | 2,000
Tax benefits realized in connection with the vesting of restricted stock-based awards and exercises of stock options | $ 692 | $ 860 | $ 614

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- Definition Tax Benefits from Exercise of Stock Options and Vesting of Restricted Stock-Based Awards [Abstract] + References No definition available. + Details
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- Definition Amount of deferred tax expense from write-off of the deferred tax asset related to deductible stock options at exercise. + References No definition available. + Details
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- Definition Amount of cash inflow from exercise of stock options granted under share-based compensation arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109197908&loc=SL79508275-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585 + Details
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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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