RESTRUCTURING ACTIVITIES (Details) $ in Millions	6 Months Ended
	Nov. 30, 2020 USD ($)	[2]
Restructuring reserve [Line Items]
Accrued at period start	$ 151	[1]
Initial Costs	289	[3]
Adjustments to Cost	(19)	[4]
Cash Payments	(246)
Others	12	[5]
Accrued at period end	187	[1]
Fiscal 2019 Oracle Restructuring [Member]
Restructuring reserve [Line Items]
Accrued at period start	138	[1]
Initial Costs	287	[3]
Adjustments to Cost	(18)	[4]
Cash Payments	(244)
Others	12	[5]
Accrued at period end	175	[1]
Total Costs Accrued to Date	1,006
Total Expected Program Costs	1,076
Fiscal 2019 Oracle Restructuring [Member] | Other [Member]
Restructuring reserve [Line Items]
Accrued at period start	22	[1],[6]
Initial Costs	100	[3],[6]
Adjustments to Cost	0	[4],[6]
Cash Payments	(80)	[6]
Others	3	[5],[6]
Accrued at period end	45	[1],[6]
Total Costs Accrued to Date	363	[6]
Total Expected Program Costs	369	[6]
Fiscal 2019 Oracle Restructuring [Member] | Cloud and License [Member] | Operating Segments [Member]
Restructuring reserve [Line Items]
Accrued at period start	75	[1]
Initial Costs	126	[3]
Adjustments to Cost	(15)	[4]
Cash Payments	(112)
Others	7	[5]
Accrued at period end	81	[1]
Total Costs Accrued to Date	414
Total Expected Program Costs	454
Fiscal 2019 Oracle Restructuring [Member] | Hardware [Member] | Operating Segments [Member]
Restructuring reserve [Line Items]
Accrued at period start	14	[1]
Initial Costs	24	[3]
Adjustments to Cost	(1)	[4]
Cash Payments	(21)
Others	0	[5]
Accrued at period end	16	[1]
Total Costs Accrued to Date	103
Total Expected Program Costs	106
Fiscal 2019 Oracle Restructuring [Member] | Services [Member] | Operating Segments [Member]
Restructuring reserve [Line Items]
Accrued at period start	27	[1]
Initial Costs	37	[3]
Adjustments to Cost	(2)	[4]
Cash Payments	(31)
Others	2	[5]
Accrued at period end	33	[1]
Total Costs Accrued to Date	126
Total Expected Program Costs	147
Other Restructuring Plans [Member]
Restructuring reserve [Line Items]
Accrued at period start	13	[1],[7]
Initial Costs	2	[3],[7]
Adjustments to Cost	(1)	[4],[7]
Cash Payments	(2)	[7]
Others	0	[5],[7]
Accrued at period end	$ 12	[1],[7]

[1] As of November 30, 2020 and May 31, 2020, substantially all restructuring liabilities have been recorded in other current liabilities within our condensed consolidated balance sheets.

[2] Restructuring costs recorded for individual line items primarily related to employee severance costs.

[3] Costs recorded for the respective restructuring plans during the current period presented.

[4] All plan adjustments were changes in estimates whereby increases and decreases in costs were generally recorded to operating expenses in the period of adjustments.

[5] Represents foreign currency translation and certain other adjustments.

[6] Represents employee related severance costs for functions that are not included within our operating segments and certain other restructuring costs.

[7] Other restructuring plans presented in the table above included condensed information for other Oracle based plans and other plans associated with certain of our acquisitions whereby we continued to make cash outlays to settle obligations under these plans during the period presented but for which the periodic impact to our condensed consolidated statements of operations was not significant.