XML 43 R1.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Cover - USD ($)
$ in Billions
 12 Months Ended
Jan. 31, 2020
Feb. 29, 2020
Jul. 31, 2019
Entity Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Jan. 31, 2020    
Document Transition Report false    
Entity File Number 001-38044    
Entity Registrant Name Okta, Inc.    
Entity Incorporation, State or Country Code DE    
Entity Address, Address Line One 100 First Street, Suite 600    
Entity Tax Identification Number 26-4175727    
Entity Address, City or Town San Francisco    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 94105    
City Area Code 888    
Local Phone Number 722-7871    
Title of 12(b) Security Class A common stock, par value $0.0001 per share    
Trading Symbol OKTA    
Security Exchange Name NASDAQ    
Entity Well-Known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Smaller Reporting Company false    
Emerging Growth Company false    
Shell Company false    
Entity Public Float     $ 13.7
Amendment Flag false    
Entity Central Index Key 0001660134    
Current Fiscal Year End Date --01-31    
Document Fiscal Year Focus 2020    
Document Period Focus FY    
Class A Common Stock      
Entity Information [Line Items]      
Entity Common Stock, Shares Outstanding   114,216,093  
Class B Common Stock      
Entity Information [Line Items]      
Entity Common Stock, Shares Outstanding   8,558,279