Number of shares.

No definition available.

Name:	evacu_NumberOfShares
Namespace Prefix:	evacu_
Data Type:	xbrli:sharesItemType
Balance Type:
Period Type:	instant

- Definition

The period of time which must elapse after completion of a business combination before the Sponsor can transfer, assign or sell any Founder Shares unless other specified conditions are met, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	evacu_ThresholdPeriodForNotToTransferAssignOrSellAnySharesOrWarrantsAfterCompletionOfInitialBusinessCombination
Namespace Prefix:	evacu_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

THe amount of underwritting commissions fee.

+ References

No definition available.

+ Details

Name:	evacu_UnderwrittingCommissionsFee
Namespace Prefix:	evacu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number of units issued.

+ References

No definition available.

+ Details

Name:	evacu_UnitsIssuedDuringPeriodUnitsIssued
Namespace Prefix:	evacu_
Data Type:	xbrli:sharesItemType
Balance Type:
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 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 3: 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

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ 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_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 14
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-14

+ Details

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

- Definition

The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).

+ References

+ Details

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

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=evacu_UnderwriterPrivatePlacementUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=us-gaap_OverAllotmentOptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Private Placement Units (Details) - USD ($)		1 Months Ended	9 Months Ended
Private Placement Units (Details) - USD ($)	Jul. 03, 2025	Sep. 30, 2024	Sep. 30, 2025
Class of Warrant or Right [Line Items]
Threshold period for not to transfer days	30 days
Underwritting commissions			$ 3,878,570
Proceeds from sale of Private Placement Units			$ 7,878,570
Class A Ordinary Shares [Member]
Class of Warrant or Right [Line Items]
Price of warrants	$ 11.5
Underwriter Private Placement Units [Member]
Class of Warrant or Right [Line Items]
Number of units			387,857
Number of shares price per unit	10
Underwriter Private Placement Units [Member] \| Class A Ordinary Shares [Member]
Class of Warrant or Right [Line Items]
Number of shares price per unit			1
Over-Allotment Option [Member]
Class of Warrant or Right [Line Items]
Number of units	4,000,000
Over-Allotment Option [Member] \| Underwriter Private Placement Units [Member]
Class of Warrant or Right [Line Items]
Number of units	12,857
Private Placement Units [Member]
Class of Warrant or Right [Line Items]
Number of warrants to purchase shares issued	400,000
Price of warrants	$ 10
Aggregate purchase price	$ 4,000,000
Number of units	387,857
Proceeds from sale of Private Placement Units			$ 4,000,000
Private Placement Units [Member] \| Class A Ordinary Shares [Member]
Class of Warrant or Right [Line Items]
Number of units			400,000
Number of shares price per unit			1
Private Placement Units [Member] \| Underwriter Private Placement Units [Member]
Class of Warrant or Right [Line Items]
Proceeds from sale of Private Placement Units	$ 3,878,570		$ 3,878,570