DOCUMENT AND ENTITY INFORMATION In Millions, unless otherwise specified	3 Months Ended
	Aug. 31, 2012	Sep. 17, 2012
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Aug. 31, 2012
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2013
Trading Symbol	ORCL
Entity Registrant Name	Oracle Corporation
Entity Central Index Key	0001341439
Current Fiscal Year End Date	--05-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding (in shares)		4,819,056,000