RESTRUCTURING ACTIVITIES (Details) $ in Millions	9 Months Ended
	Feb. 28, 2021 USD ($)	[2]
Restructuring reserve [Line Items]
Accrued at period start	$ 151	[1]
Initial Costs	361	[3]
Adjustments to Cost	(24)	[4]
Cash Payments	(318)
Others	16	[5]
Accrued at period end	186	[1]
Total Costs Accrued to Date	0
Total Expected Program Costs	0
Fiscal 2019 Oracle Restructuring [Member]
Restructuring reserve [Line Items]
Accrued at period start	138	[1]
Initial Costs	359	[3]
Adjustments to Cost	(24)	[4]
Cash Payments	(314)
Others	17	[5]
Accrued at period end	176	[1]
Total Costs Accrued to Date	1,072
Total Expected Program Costs	1,117
Fiscal 2019 Oracle Restructuring [Member] | Other [Member]
Restructuring reserve [Line Items]
Accrued at period start	22	[1],[6]
Initial Costs	114	[3],[6]
Adjustments to Cost	(1)	[4],[6]
Cash Payments	(95)	[6]
Others	4	[5],[6]
Accrued at period end	44	[1],[6]
Total Costs Accrued to Date	376	[6]
Total Expected Program Costs	376	[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	168	[3]
Adjustments to Cost	(18)	[4]
Cash Payments	(148)
Others	11	[5]
Accrued at period end	88	[1]
Total Costs Accrued to Date	453
Total Expected Program Costs	470
Fiscal 2019 Oracle Restructuring [Member] | Hardware [Member] | Operating Segments [Member]
Restructuring reserve [Line Items]
Accrued at period start	14	[1]
Initial Costs	32	[3]
Adjustments to Cost	(2)	[4]
Cash Payments	(26)
Others	(1)	[5]
Accrued at period end	17	[1]
Total Costs Accrued to Date	110
Total Expected Program Costs	115
Fiscal 2019 Oracle Restructuring [Member] | Services [Member] | Operating Segments [Member]
Restructuring reserve [Line Items]
Accrued at period start	27	[1]
Initial Costs	45	[3]
Adjustments to Cost	(3)	[4]
Cash Payments	(45)
Others	3	[5]
Accrued at period end	27	[1]
Total Costs Accrued to Date	133
Total Expected Program Costs	156
Other Restructuring Plans [Member]
Restructuring reserve [Line Items]
Accrued at period start	13	[1],[7]
Initial Costs	2	[3],[7]
Adjustments to Cost	0	[4],[7]
Cash Payments	(4)	[7]
Others	(1)	[5],[7]
Accrued at period end	10	[1],[7]
Total Costs Accrued to Date	0	[7]
Total Expected Program Costs	$ 0	[7]

[1] As of February 28, 2021 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.