Number of warrants or rights exercised during the period.

No definition available.

Name:	devs_ClassOfWarrantOrRightExercised
Namespace Prefix:	devs_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of additional shares the warrants holder entitled to acquire at an exercise price.

+ References

No definition available.

+ Details

Name:	devs_NumberOfAdditionalSharesEachWarrantHolderEntitleToAcquire
Namespace Prefix:	devs_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of eligible warrants exchanged for each new warrant under the Incentive Program.

+ References

No definition available.

+ Details

Name:	devs_NumberOfEligibleWarrantsForEachNewWarrant
Namespace Prefix:	devs_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of new share purchase warrants the holder will receive for two eligible warrants under the Incentive Program.

+ References

No definition available.

+ Details

Name:	devs_NumberOfNewSharePurchaseWarrantsForTwoEligibleWarrants
Namespace Prefix:	devs_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-3

+ Details

Name:	us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of noncash expense for share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

+ Details

Name:	us-gaap_ShareBasedCompensation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

+ Details

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

- Definition

Fair value portion of warrants not settleable in cash classified as equity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2E
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2E

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

+ Details

Name:	us-gaap_WarrantsNotSettleableInCashFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	srt_ConsolidatedEntitiesAxis=devs_DevvStreamHoldingsIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PlanNameAxis=devs_WarrantExerciseIncentiveProgramMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardTypeAxis=devs_EligibleWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardTypeAxis=devs_NewWarrantMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Share capital, Warrant Exercise Incentive Program (FY) (Details)			6 Months Ended		12 Months Ended
	May 10, 2023 USD ($) shares	May 01, 2023 $ / shares shares	Jan. 31, 2025 USD ($)	Jan. 31, 2024 USD ($)	Jul. 31, 2024 USD ($)	Jul. 31, 2023 USD ($)	Nov. 06, 2024 $ / shares	Oct. 29, 2024 $ / shares	Oct. 08, 2024 $ / shares	Sep. 22, 2023 $ / shares	Aug. 22, 2023 $ / shares	Aug. 04, 2023 $ / shares	Apr. 30, 2023 $ / shares
Warrants and Rights Note Disclosure [Abstract]
Warrant exercise price per share (in dollars per share) \| $ / shares							$ 1.52	$ 1.31	$ 6.73	$ 1.31	$ 1.31	$ 1.31
Warrant fair value modification \| $			$ 292,896	$ 786,317
DevvStream Holdings, Inc. [Member]
Warrants and Rights Note Disclosure [Abstract]
Warrant exercise price per share (in dollars per share) \| $ / shares								$ 0.2		$ 0.2	$ 0.2	$ 0.2
Warrants exercised (in shares)	1,170,000
Warrant fair value modification \| $					$ 1,290,327	$ 1,838,811
DevvStream Holdings, Inc. [Member] \| Warrant Exercise Incentive Program [Member]
Warrants and Rights Note Disclosure [Abstract]
Warrant fair value modification \| $	$ 23,744
DevvStream Holdings, Inc. [Member] \| Warrant Exercise Incentive Program [Member] \| Eligible Warrants [Member]
Warrants and Rights Note Disclosure [Abstract]
Warrant exercise price per share (in dollars per share) \| $ / shares		$ 1.2											$ 1.5
Number of eligible warrant for each new warrants (in shares)		2
Warrants exercised (in shares)	170,000
DevvStream Holdings, Inc. [Member] \| Warrant Exercise Incentive Program [Member] \| New Warrants [Member]
Warrants and Rights Note Disclosure [Abstract]
Warrant exercise price per share (in dollars per share) \| $ / shares		$ 2
Number of new share purchase warrants for two eligible warrants (in shares)		1
Number of additional shares each warrant holder will entitle to acquire (in shares)		1
Warrants exercised (in shares)	85,000
Fair value of the warrants issued \| $	$ 37,379