RESTRUCTURING ACTIVITIES (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Nov. 30, 2012
Restructuring reserve [Line Items]
Accrued at period start	$ 337	[1]
Initial Costs	301	[2]
Adjustments to Cost	(25)	[3]
Cash Payments	(211)
Others	(6)	[4]
Accrued at period end	396	[1]
Total Expected Program Costs	297
Fiscal 2013 Oracle Restructuring Plan [Member]
Restructuring reserve [Line Items]
Accrued at period start	0
Initial Costs	261	[2],[5]
Adjustments to Cost	(12)	[3],[5]
Cash Payments	(106)	[5]
Others	(5)	[4],[5]
Accrued at period end	138	[5]
Total Costs Accrued to Date	249	[5]
Total Expected Program Costs	297	[5]
Fiscal 2013 Oracle Restructuring Plan [Member] | New software licenses and cloud software subscriptions [Member]
Restructuring reserve [Line Items]
Accrued at period start	0
Initial Costs	65	[2],[5]
Adjustments to Cost	(3)	[3],[5]
Cash Payments	(32)	[5]
Others	(1)	[4],[5]
Accrued at period end	29	[5]
Total Costs Accrued to Date	62	[5]
Total Expected Program Costs	78	[5]
Fiscal 2013 Oracle Restructuring Plan [Member] | Software license updates and product support [Member]
Restructuring reserve [Line Items]
Accrued at period start	0
Initial Costs	9	[2],[5]
Adjustments to Cost	(6)	[3],[5]
Cash Payments	(3)	[5]
Others	3	[4],[5]
Accrued at period end	3	[5]
Total Costs Accrued to Date	3	[5]
Total Expected Program Costs	41	[5]
Fiscal 2013 Oracle Restructuring Plan [Member] | Hardware systems business [Member]
Restructuring reserve [Line Items]
Accrued at period start	0
Initial Costs	77	[2],[5]
Adjustments to Cost	(2)	[3],[5]
Cash Payments	(26)	[5]
Accrued at period end	49	[5]
Total Costs Accrued to Date	75	[5]
Total Expected Program Costs	60	[5]
Fiscal 2013 Oracle Restructuring Plan [Member] | Services [Member]
Restructuring reserve [Line Items]
Accrued at period start	0
Initial Costs	51	[2],[5]
Adjustments to Cost	(1)	[3],[5]
Cash Payments	(20)	[5]
Others	1	[4],[5]
Accrued at period end	31	[5]
Total Costs Accrued to Date	50	[5]
Total Expected Program Costs	50	[5]
Fiscal 2013 Oracle Restructuring Plan [Member] | General and administrative and other [Member]
Restructuring reserve [Line Items]
Accrued at period start	0
Initial Costs	59	[2],[5]
Cash Payments	(25)	[5]
Others	(8)	[4],[5]
Accrued at period end	26	[5]
Total Costs Accrued to Date	59	[5]
Total Expected Program Costs	68	[5]
Other Restructuring Plans [Member]
Restructuring reserve [Line Items]
Accrued at period start	337	[6]
Initial Costs	40	[2],[6]
Adjustments to Cost	(13)	[3],[6]
Cash Payments	(105)	[6]
Others	(1)	[4],[6]
Accrued at period end	$ 258	[6]

[1] The balances at November 30, 2012 and May 31, 2012 included $258 million and $178 million, respectively, recorded in other current liabilities, and $138 million and $159 million, respectively, recorded in other non-current liabilities.

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

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

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

[5] Restructuring costs recorded for individual line items presented related to employee severance costs except for general and administrative and other, which also included $35 million recorded during the first half of fiscal 2013 for facilities related restructuring, contract termination and other costs.

[6] 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 current impact to our consolidated statements of operations was not significant.