RESTRUCTURING ACTIVITIES Narrative (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Restructuring activities [Narrative] [Abstract]
Fiscal 2013 Oracle Restructuring Plan, total expected program cost	$ 420
Fiscal 2013 Oracle Restructuring Plan, expenses	325
Fiscal 2013 Oracle Restructuring Plan, remaining expenses to incur	95
Fiscal 2013 Oracle Restructuring Plan, expected completion date	May 31, 2014
Sun Restructuring Plan, expenses		215	439
Status of Sun Restructuring Plan		The execution of the Sun restructuring Plan was substantially complete as of the end of fiscal 2012.
Total Restructuring Liabilities [Abstract]
Facilities related restructuring, contract termination and other costs	46	23	97
Accrued restructuring liabilities, current (in other current liabilities)	160	178
Accrued restructuring liabilities, non-current (in other non-current liabilities)	$ 90	$ 159