Significant Shareholdings and Related Party Transactions - Schedule of Ownership Interest (Details)	12 Months Ended
Jun. 30, 2023
Key management personnel of entity or parent
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava Argentina SRL
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava Australia Pty Ltd
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| DEK Corporation Pty Ltd
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Lexicon Consolidated Holdings Pty Ltd
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Lexicon Digital Trust
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Lexicon Digital Pty Ltd
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Mudbath & Co Pty Ltd
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava Austria GmbH
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava d.o.o. Banja Luka
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava d.o.o. Sarajevo
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava EOOD
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava Canada Inc.
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava Colombia S.A.S.
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava S.A.S.
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava d.o.o
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava ApS
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava GmbH
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava Munchen GmbH
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava (Ireland) Limited
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava Digital Services Limited
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava Malaysia SDN. BHD.
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Lvvl Mexico S. de R.L. de C.V.
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| ICS Endava SRL
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava B.V.
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava Holdings B.V.
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava DOOEL Skopje
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava Poland sp. z.o.o
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava Romania SRL
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava d.o.o. Beograd
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava Digital Services d.o.o. Beograd
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava Singapore Pte. Ltd
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava Digitalne Resitve d.o.o.
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| DEK Technologies Sweden AB
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava Switzerland GmbH
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava Middle East FZ-LLC
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava (Managed Services) Limited
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava (UK) Limited
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava Limited Guernsey Employee Benefit Trust
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Intuitus Limited
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Business Agility Consulting Limited
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava Holdings Inc
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava Inc.
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava LLC
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava Nearshore Ventures LLC
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava USA West Inc
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Five Minutes Studio, Inc
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Levvel Digital LLC
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Levvel LLC
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava Uruguay SRL
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| DEK Technologies Vietnam Company Limited
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava Limited Liability Company
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Endava (Romania) Limited
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%
Subsidiaries \| Testing4Finance Ltd
Disclosure of transactions between related parties [line items]
Proportion of ownership interest in subsidiary	100.00%