No definition available.

Name:	ark_BeskaugaOptionAgreementDetailsLineItems
Namespace Prefix:	ark_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of cumulative expenditure.

+ References

No definition available.

+ Details

Name:	ark_CumulativeExpenditure
Namespace Prefix:	ark_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Percentage of bonus payments.

+ References

No definition available.

+ Details

Name:	ark_PercentageOfBonusPayments
Namespace Prefix:	ark_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of bonus payments payable in shares.

+ References

No definition available.

+ Details

Name:	ark_PercentageOfBonusPaymentsPayableInShares
Namespace Prefix:	ark_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of remaining bonus payments.

+ References

No definition available.

+ Details

Name:	ark_PercentageOfRemainingBonusPayments
Namespace Prefix:	ark_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The amount of interest and other costs that an entity incurs in connection with the borrowing of funds.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_BorrowingCostsIncurred
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

The potential dilutive effect on the weighted average number of ordinary shares that relate to the assumed conversion of the entity's convertible instruments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 33
-IssueDate 2023-01-01
-Paragraph 70
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2023-en-r&anchor=para_70_b&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_DilutiveEffectOfConvertibleInstrumentsOnNumberOfOrdinaryShares
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash inflow from the exercise of options.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2023-01-01
-Paragraph 17
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2023-en-r&anchor=para_17&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_ProceedsFromExerciseOfOptions
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The proportion of ownership interest in an associate attributable to the entity. [Refer: Associates [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2023-01-01
-Paragraph 17
-Subparagraph b
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2023-en-r&anchor=para_17_b_iii&doctype=Standard
-URIDate 2023-03-23

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2023-01-01
-Paragraph 16
-Subparagraph b
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2023-en-r&anchor=para_16_b_iii&doctype=Standard
-URIDate 2023-03-23

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2023-01-01
-Paragraph 21
-Subparagraph a
-Clause iv
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2023-en-r&anchor=para_21_a_iv&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_ProportionOfOwnershipInterestInAssociate
Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash outflow for the purchase of available-for-sale financial assets. [Refer: Financial assets available-for-sale]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expired 2023-01-01
-Name IAS
-Number 7
-IssueDate 2023-01-01
-Paragraph 16
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2017-en-b&anchor=para_16&doctype=Standard&book=b
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_PurchaseOfAvailableforsaleFinancialAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	ifrs-full_CounterpartiesAxis=ark_BeskaugaPropertyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CounterpartiesAxis=ark_BeskaugaMainProjectMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CounterpartiesAxis=ark_BeskaugaSouthProjectMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Beskauga Option Agreement (Details) - USD ($)			12 Months Ended
Beskauga Option Agreement (Details) - USD ($)	Mar. 19, 2021	Aug. 12, 2020	Oct. 31, 2023
Beskauga Option Agreement (Details) [Line Items]
Ownership interest		100.00%
Payment for purchase of assets	$ 1,367,668
Common stock issued as purchase consideration (in Shares)	36,000,000
Expenditures incurred			$ 9,910,000
Cumulative expenditure			$ 10,000,000
Percentage of bonus payments			20.00%
Percentage of remaining bonus payments			80.00%
Percentage of bonus payments payable in shares			50.00%
Beskauga Property [Member]
Beskauga Option Agreement (Details) [Line Items]
Option agreement payment			$ 15,000,000
Beskauga Main Project [Member]
Beskauga Option Agreement (Details) [Line Items]
Option agreement payment			13,500,000
Beskauga South Project [Member]
Beskauga Option Agreement (Details) [Line Items]
Option agreement payment			$ 1,500,000