Commitments - Narrative (Details)	12 Months Ended
Jun. 30, 2020
Bottom of range
Disclosure of finance lease and operating lease by lessee [Line Items]
Term of contract	2 years
Top of range
Disclosure of finance lease and operating lease by lessee [Line Items]
Term of contract	3 years

[Line Items] for Disclosure of finance lease and operating lease by lessee

No definition available.

Name:	team_DisclosureoffinanceleaseandoperatingleasebylesseeLineItems
Namespace Prefix:	team_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration