SUMMARY OF TOTAL REVENUES BY GEOGRAPHIC REGION (Details) - USD ($) $ in Millions		12 Months Ended
		May 31, 2021	May 31, 2020	May 31, 2019
Disaggregation of Revenue [Line Items]
Total revenues		$ 40,479	$ 39,068	$ 39,506
Americas [Member]
Disaggregation of Revenue [Line Items]
Total revenues		21,828	21,563	21,856
EMEA [Member]
Disaggregation of Revenue [Line Items]
Total revenues	[1]	11,894	11,035	11,270
Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Total revenues		$ 6,757	$ 6,470	$ 6,380

[1] Comprised of Europe, the Middle East and Africa