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DOCUMENT AND ENTITY INFORMATION - USD ($)
 12 Months Ended
May 31, 2022
Jun. 13, 2022
Nov. 30, 2021
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date May 31, 2022    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2022    
Entity Registrant Name Oracle Corporation    
Entity Central Index Key 0001341439    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Current Fiscal Year End Date --05-31    
Entity Filer Category Large Accelerated Filer    
Entity Well-known Seasoned Issuer Yes    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding (in shares)   2,664,926,000  
Entity Public Float (in dollars)     $ 137,902,273,000
Entity File Number 001-35992    
Entity Tax Identification Number 54-2185193    
Entity Address, Address Line One 2300 Oracle Way    
Entity Address, City or Town Austin    
Entity Address, State or Province TX    
Entity Address, Postal Zip Code 78741    
City Area Code 737    
Local Phone Number 867-1000    
Entity Interactive Data Current Yes    
ICFR Auditor Attestation Flag true    
Entity Incorporation, State or Country Code DE    
Document Annual Report true    
Document Transition Report false    
Auditor Firm ID 42    
Auditor Name Ernst & Young LLP    
Auditor Location San Jose, California    
Documents Incorporated by Reference

Portions of the registrant's definitive proxy statement relating to its 2022 annual meeting of stockholders are incorporated by reference into Part III of this Annual Report on Form 10-K where indicated. Such proxy statement will be filed with the U.S. Securities and Exchange Commission within 120 days of the registrant’s fiscal year ended May 31, 2022.

    
Common Stock [Member]      
Document Information [Line Items]      
Title of 12(b) Security Common Stock, par value $0.01 per share    
Trading Symbol ORCL    
Security Exchange Name NYSE    
3.125% senior notes due July 2025 [Member]      
Document Information [Line Items]      
Title of 12(b) Security 3.125% senior notes due July 2025    
Security Exchange Name NYSE    
No Trading Symbol Flag true