Significant accounting policies, Stop-loss Provision Liabilities (Details)	12 Months Ended
Jul. 31, 2025
Stop Loss Provision Liabilities [Abstract]
Maximum contractual obligations to reimburse sellers term	18 months

Duration of contractual obligations to reimburse sellers term, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but not limited to, weeks in a year or quarter.

No definition available.

Name:	devs_MaximumContractualObligationsToReimburseSellersTerm
Namespace Prefix:	devs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration