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GOODWILL (Details) - USD ($) $ in Millions | 12 Months Ended
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May 31, 2019 | May 31, 2018
Goodwill [Line Items] |  |  |
Balances at period start |  | $ 43,755 | $ 43,045
Goodwill from acquisitions |  | 96 | 1,052
Goodwill adjustments, net | [1] | (72) | (342)
Balances at period end |  | 43,779 | 43,755
Cloud and License [Member] |  |  |
Goodwill [Line Items] |  |  |
Balances at period start |  | 39,600 | 38,791
Goodwill from acquisitions |  | 96 | 1,052
Goodwill adjustments, net | [1] | (63) | (243)
Balances at period end |  | 39,633 | 39,600
Hardware [Member] |  |  |
Goodwill [Line Items] |  |  |
Balances at period start |  | 2,367 | 2,367
Goodwill from acquisitions |  | 0 | 0
Goodwill adjustments, net | [1] | 0 | 0
Balances at period end |  | 2,367 | 2,367
Services [Member] |  |  |
Goodwill [Line Items] |  |  |
Balances at period start |  | 1,788 | 1,887
Goodwill from acquisitions |  | 0 | 0
Goodwill adjustments, net | [1] | (9) | (99)
Balances at period end |  | $ 1,779 | $ 1,788
[1] | Pursuant to our business combinations accounting policy, we recorded goodwill adjustments for the effects on goodwill of changes to net assets acquired during the period that such a change is identified, provided that any such change is within the measurement period (up to one year from the date of the acquisition). Amounts also include immaterial changes, if any, in goodwill balances for the periods presented that resulted from net foreign currency translations.

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