SUMMARY OF TOTAL REVENUES BY GEOGRAPHIC REGION (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|
Nov. 30, 2019 |
Nov. 30, 2018 |
Nov. 30, 2019 |
Nov. 30, 2018 |
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| Disaggregation of Revenue [Line Items] | ||||||
| Total revenues | $ 9,614 | $ 9,562 | $ 18,832 | $ 18,755 | ||
| Americas [Member] | ||||||
| Disaggregation of Revenue [Line Items] | ||||||
| Total revenues | 5,304 | 5,243 | 10,454 | 10,404 | ||
| EMEA [Member] | ||||||
| Disaggregation of Revenue [Line Items] | ||||||
| Total revenues | [1] | 2,695 | 2,782 | 5,248 | 5,358 | |
| Asia Pacific [Member] | ||||||
| Disaggregation of Revenue [Line Items] | ||||||
| Total revenues | $ 1,615 | $ 1,537 | $ 3,130 | $ 2,993 | ||
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