REVENUES (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Jun. 30, 2020
Revenue from Contract with Customer [Abstract]
Customer deposits	$ 4,280	$ 2,061
Deferred revenue, current	22,193	16,464
Deferred revenue, noncurrent	$ 9,323	$ 6,254

Contract With Customer, Liability, Deferred Revenue, Noncurrent

No definition available.

Name:	ubnt_ContractWithCustomerLiabilityDeferredRevenueNoncurrent
Namespace Prefix:	ubnt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant