RESTRUCTURING ACTIVITIES (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended
	Nov. 30, 2013		Nov. 30, 2012	Nov. 30, 2013		Nov. 30, 2012
Restructuring Reserve [Line Items]
Accrued at Period Start				$ 250	[1]
Initial Costs				134	[2]
Adjustments to Cost				(26)	[3]
Cash Payments				(147)
Others				(9)	[4]
Accrued at Period End	202	[1]		202	[1]
Restructuring Expenses	52		131	108		276
Fiscal 2013 Oracle Restructuring [Member]
Restructuring Reserve [Line Items]
Accrued at Period Start				71	[5]
Initial Costs				118	[2],[5]
Adjustments to Cost				(19)	[3],[5]
Cash Payments				(117)	[5]
Others				3	[4],[5]
Accrued at Period End	56	[5]		56	[5]
Total Costs Accrued to Date				424	[5]
Total Expected Program Costs				705	[5]
Restructuring Expenses				99
Remaining Expenses to Incur				281
Fiscal 2013 Oracle Restructuring Plan, Expected Completion Date				May 31, 2014
Fiscal 2013 Oracle Restructuring [Member] | New software licenses and cloud software subscriptions [Member]
Restructuring Reserve [Line Items]
Accrued at Period Start				16	[5]
Initial Costs				36	[2],[5]
Adjustments to Cost				(4)	[3],[5]
Cash Payments				(36)	[5]
Accrued at Period End	12	[5]		12	[5]
Total Costs Accrued to Date				109	[5]
Total Expected Program Costs				158	[5]
Fiscal 2013 Oracle Restructuring [Member] | Software license updates and product support [Member]
Restructuring Reserve [Line Items]
Accrued at Period Start				1	[5]
Initial Costs				8	[2],[5]
Cash Payments				(7)	[5]
Accrued at Period End	2	[5]		2	[5]
Total Costs Accrued to Date				15	[5]
Total Expected Program Costs				24	[5]
Fiscal 2013 Oracle Restructuring [Member] | Hardware systems business [Member]
Restructuring Reserve [Line Items]
Accrued at Period Start				24	[5]
Initial Costs				29	[2],[5]
Adjustments to Cost				(6)	[3],[5]
Cash Payments				(34)	[5]
Others				1	[4],[5]
Accrued at Period End	14	[5]		14	[5]
Total Costs Accrued to Date				117	[5]
Total Expected Program Costs				238	[5]
Fiscal 2013 Oracle Restructuring [Member] | Services [Member]
Restructuring Reserve [Line Items]
Accrued at Period Start				18	[5]
Initial Costs				24	[2],[5]
Adjustments to Cost				(4)	[3],[5]
Cash Payments				(23)	[5]
Accrued at Period End	15	[5]		15	[5]
Total Costs Accrued to Date				87	[5]
Total Expected Program Costs				166	[5]
Fiscal 2013 Oracle Restructuring [Member] | General and administrative and other [Member]
Restructuring Reserve [Line Items]
Accrued at Period Start				12	[5]
Initial Costs				21	[2],[5]
Adjustments to Cost				(5)	[3],[5]
Cash Payments				(17)	[5]
Others				2	[4],[5]
Accrued at Period End	13	[5]		13	[5]
Total Costs Accrued to Date				96	[5]
Total Expected Program Costs				119	[5]
Other Restructuring Plans [Member]
Restructuring Reserve [Line Items]
Accrued at Period Start				179	[6]
Initial Costs				16	[2],[6]
Adjustments to Cost				(7)	[3],[6]
Cash Payments				(30)	[6]
Others				(12)	[4],[6]
Accrued at Period End	$ 146	[6]		$ 146	[6]

[1] The balances at November 30, 2013 and May 31, 2013 included $120 million and $160 million, respectively, recorded in other current liabilities, and $82 million and $90 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.

[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.