RESTRUCTURING AND OTHER EXPENSES - Summary of All Plans (Details) - USD ($) $ in Millions		12 Months Ended
		May 31, 2026		May 31, 2025		May 31, 2024
Restructuring Reserve Disclosures [Abstract]
Accrued at period start	[2]	$ 212	[1]	$ 236		$ 199
Initial Costs	[2],[3]	1,640		322		447
Adjustments to Cost	[2],[4]	139		(23)		(43)
Cash Payments	[2]	(1,341)		(328)		(369)
Others	[2],[5]	3		5		2
Accrued at period end	[2]	653	[1]	212	[1]	236
Fiscal 2026 Oracle Restructuring [Member]
Restructuring Reserve Disclosures [Abstract]
Accrued at period start	[1],[2]	0
Initial Costs	[2],[3]	1,640
Adjustments to Cost	[2],[4]	164
Cash Payments	[2]	(1,236)
Others	[2],[5]	(1)
Accrued at period end	[1],[2]	567		0
Total Costs Accrued to Date	[2]	1,804
Total Expected Program Costs	[2]	2,103
Fiscal 2026 Oracle Restructuring [Member] | Other [Member]
Restructuring Reserve Disclosures [Abstract]
Accrued at period start	[1],[2]	0
Initial Costs	[2],[3]	674
Adjustments to Cost	[2],[4]	86
Cash Payments	[2]	(591)
Others	[2],[5]	1
Accrued at period end	[1],[2]	170		0
Total Costs Accrued to Date	[2]	760
Total Expected Program Costs	[2]	835
Fiscal 2026 Oracle Restructuring [Member] | Cloud and Software [Member] | Operating Segments [Member]
Restructuring Reserve Disclosures [Abstract]
Accrued at period start	[1],[2]	0
Initial Costs	[2],[3]	601
Adjustments to Cost	[2],[4]	58
Cash Payments	[2]	(439)
Others	[2],[5]	(1)
Accrued at period end	[1],[2]	219		0
Total Costs Accrued to Date	[2]	659
Total Expected Program Costs	[2]	786
Fiscal 2026 Oracle Restructuring [Member] | Hardware [Member] | Operating Segments [Member]
Restructuring Reserve Disclosures [Abstract]
Accrued at period start	[1],[2]	0
Initial Costs	[2],[3]	75
Adjustments to Cost	[2],[4]	3
Cash Payments	[2]	(49)
Others	[2],[5]	0
Accrued at period end	[1],[2]	29		0
Total Costs Accrued to Date	[2]	78
Total Expected Program Costs	[2]	83
Fiscal 2026 Oracle Restructuring [Member] | Services [Member] | Operating Segments [Member]
Restructuring Reserve Disclosures [Abstract]
Accrued at period start	[1],[2]	0
Initial Costs	[2],[3]	290
Adjustments to Cost	[2],[4]	17
Cash Payments	[2]	(157)
Others	[2],[5]	(1)
Accrued at period end	[1],[2]	149		0
Total Costs Accrued to Date	[2]	307
Total Expected Program Costs	[2]	399
Fiscal 2024 Oracle Restructuring [Member]
Restructuring Reserve Disclosures [Abstract]
Accrued at period start	[2]	171	[1]	152		0
Initial Costs	[2],[3]			322		447
Adjustments to Cost	[2],[4]			(8)		(15)
Cash Payments	[2]			(299)		(280)
Others	[2],[5]			4		0
Accrued at period end	[2]			171	[1]	152
Fiscal 2024 Oracle Restructuring [Member] | Other [Member]
Restructuring Reserve Disclosures [Abstract]
Accrued at period start	[2]	60	[1]	49		0
Initial Costs	[2],[3]			153		188
Adjustments to Cost	[2],[4]			(2)		(5)
Cash Payments	[2]			(142)		(134)
Others	[2],[5]			2		0
Accrued at period end	[2]			60	[1]	49
Fiscal 2024 Oracle Restructuring [Member] | Cloud and Software [Member] | Operating Segments [Member]
Restructuring Reserve Disclosures [Abstract]
Accrued at period start	[2]	79	[1]	87		0
Initial Costs	[2],[3]			115		204
Adjustments to Cost	[2],[4]			(6)		(9)
Cash Payments	[2]			(118)		(108)
Others	[2],[5]			1		0
Accrued at period end	[2]			79	[1]	87
Fiscal 2024 Oracle Restructuring [Member] | Hardware [Member] | Operating Segments [Member]
Restructuring Reserve Disclosures [Abstract]
Accrued at period start	[2]	10	[1]	4		0
Initial Costs	[2],[3]			17		9
Adjustments to Cost	[2],[4]			0		0
Cash Payments	[2]			(11)		(5)
Others	[2],[5]			0		0
Accrued at period end	[2]			10	[1]	4
Fiscal 2024 Oracle Restructuring [Member] | Services [Member] | Operating Segments [Member]
Restructuring Reserve Disclosures [Abstract]
Accrued at period start	[2]	22	[1]	12		0
Initial Costs	[2],[3]			37		46
Adjustments to Cost	[2],[4]			0		(1)
Cash Payments	[2]			(28)		(33)
Others	[2],[5]			1		0
Accrued at period end	[2]			22	[1]	12
Other Restructuring Plans [Member]
Restructuring Reserve Disclosures [Abstract]
Accrued at period start	[2],[6]	41	[1]	84		199
Initial Costs	[2],[3],[6]	0		0		0
Adjustments to Cost	[2],[4],[6]	(25)		(15)		(28)
Cash Payments	[2],[6]	(105)		(29)		(89)
Others	[2],[5],[6]	4		1		2
Accrued at period end	[2],[6]	86	[1]	41	[1]	$ 84
Other Restructuring Plans & Fiscal 2024 Oracle Restructuring [Member]
Restructuring Reserve Disclosures [Abstract]
Accrued at period start	[1],[2],[6]	$ 212
Accrued at period end	[1],[2],[6]			$ 212

[1] As of May 31, 2026, $581 million and $72 million were recorded in other current liabilities and other non-current liabilities, respectively, within our consolidated balance sheets. As of May 31, 2025, substantially all restructuring liabilities have been recorded in other current liabilities within our consolidated balance sheets.

[2] Restructuring costs recorded to each of the operating segments presented primarily related to employee severance costs. Other restructuring costs represented employee severance costs not related to our operating segments and certain other restructuring plan costs.

[3] Costs recorded for the respective restructuring plans during the 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 non-cash adjustments.

[6] Other restructuring plans presented in the tables 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 periods presented but for which the periodic impact to our consolidated statements of operations was not significant.