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ACCRUED WARRANTY - Additional Information (Detail)	9 Months Ended
	Mar. 31, 2017
Product Warranties Disclosures [Abstract]
Warranty period (in years)	12 months

X

- Definition

Standard product warranty period.

+ References

No definition available.

+ Details

Name:	ubnt_StandardProductWarrantyPeriod
Namespace Prefix:	ubnt_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_ProductWarrantiesDisclosuresAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration