Cover Page - USD ($)
 12 Months Ended
Jun. 30, 2019
Aug. 19, 2019
Dec. 31, 2018
Cover page.      
Document Type 10-K    
Document Annual Report true    
Document Period End Focus Jun. 30, 2019    
Document Transition Report false    
Entity File Number 001-35300    
Entity Registrant Name UBIQUITI INC.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 32-0097377    
Entity Address, Address Line One 685 Third Avenue    
Entity Address, Address Line Two 27th Floor    
Entity Address, City or Town New York    
Entity Address, State or Province NY    
Entity Address, Postal Zip Code 10017    
City Area Code 646    
Local Phone Number 780-7958    
Title of 12(b) Security Common stock, $0.001 par value per share    
Trading Symbol UI    
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     $ 1,415,986,596
Entity Common Stock, Shares Outstanding   68,640,688  
Amendment Flag false    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Entity Central Index Key 0001511737    
Current Fiscal Year End Date --06-30