XML 74 R1.htm IDEA: XBRL DOCUMENT v3.20.1
Cover Page - USD ($)
$ in Billions
 12 Months Ended
Mar. 31, 2020
May 15, 2020
Sep. 30, 2019
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Mar. 31, 2020    
Document Transition Report false    
Entity File Number 000-21783    
Entity Registrant Name 8x8, Inc.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 77-0142404    
Entity Address, Address Line One 675 Creekside Way    
Entity Address, City or Town Campbell    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 95008    
City Area Code 408    
Local Phone Number 727-1885    
Title of 12(b) Security COMMON STOCK, PAR VALUE $.001 PER SHARE    
Trading Symbol EGHT    
Security Exchange Name NYSE    
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    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 1.6
Entity Common Stock, Shares Outstanding   103,642,454  
Documents Incorporated by Reference
DOCUMENTS INCORPORATED BY REFERENCE
Items 10, 11, 12, 13 and 14 of Part III incorporate information by reference from the Proxy Statement to be filed within 120 days of March 31, 2020 for the 2020 Annual Meeting of Stockholders. 		   
Entity Central Index Key 0001023731    
Amendment Flag false    
Current Fiscal Year End Date --03-31    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2020