Amortised period.

No definition available.

Name:	crml_AmortisedPeriod
Namespace Prefix:	crml_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The increase (decrease) in equity resulting from the exercise of warrants.

+ References

No definition available.

+ Details

Name:	crml_IncreaseDecreaseExerciseOfWarrantsEquity
Namespace Prefix:	crml_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the number of listed Warrants.

+ References

No definition available.

+ Details

Name:	crml_ListedWarrants
Namespace Prefix:	crml_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the listed Warrants.

+ References

No definition available.

+ Details

Name:	crml_ListedWarrantsCarryingValue
Namespace Prefix:	crml_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of expense (income) related to adjustment to fair value of warrant liability.

+ References

No definition available.

+ Details

Name:	crml_LossOfFairValueOfWarrants
Namespace Prefix:	crml_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number of warrants issued.

+ References

No definition available.

+ Details

Name:	crml_NumberOfWarrantsIssued
Namespace Prefix:	crml_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of shares ordinary shares received.

+ References

No definition available.

+ Details

Name:	crml_OrdinarySharesReceived
Namespace Prefix:	crml_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Warrant exercised.

+ References

No definition available.

+ Details

Name:	crml_WarrantExercised
Namespace Prefix:	crml_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Represent the warrants exercisable.

+ References

No definition available.

+ Details

Name:	crml_WarrantsExercisable
Namespace Prefix:	crml_
Data Type:	dtr:perShareItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	crml_WarrantsLiabilityLineItems
Namespace Prefix:	crml_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The exercise price of share options granted.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2025-01-01
-Paragraph 47
-Subparagraph a
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_47_a_i&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_ExercisePriceShareOptionsGranted2019
Namespace Prefix:	ifrs-full_
Data Type:	dtr-2022:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

The nominal value of capital arising from issuing ordinary shares. [Refer: Issued capital]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 78
-Subparagraph e
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_78_e&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_IssuedCapitalOrdinaryShares
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The number of shares issued by the entity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 106
-Subparagraph d
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_106_d&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_NumberOfSharesIssued
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	ifrs-full_LevelsOfFairValueHierarchyAxis=ifrs-full_Level1OfFairValueHierarchyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_LevelsOfFairValueHierarchyAxis=ifrs-full_Level3OfFairValueHierarchyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CategoriesOfRelatedPartiesAxis=crml_EmperyAssetManagementLPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CategoriesOfRelatedPartiesAxis=crml_GemGlobalYieldLLCSCSGEMMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	crml_ClassOfWarrantAxis=crml_PIPEWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfAntidilutiveInstrumentsAxis=crml_UnlistedWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfAntidilutiveInstrumentsAxis=ifrs-full_WarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CategoriesOfRelatedPartiesAxis=crml_CriticalMetalsCorpMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CategoriesOfRelatedPartiesAxis=crml_SizzleWarrantHoldersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Warrants Liability (Details) - USD ($)							12 Months Ended
Warrants Liability (Details) - USD ($)	Oct. 15, 2025	Oct. 06, 2025	Feb. 27, 2025	Feb. 07, 2025	Jun. 17, 2024	Feb. 27, 2024	Jun. 30, 2026	Mar. 05, 2026	Mar. 01, 2025
Warrants Liability [Line Items]
Exercise price per share (in Dollars per share)		$ 7
Warrant exercised							3,315,000
warrants exercised fund (in Dollars)							$ 23,205,000
Amortised period							6 years
Ordinary shares received								1,409,624
Level 1 [Member]
Warrants Liability [Line Items]
Loss of fair value of warrants							$ 23,973,908
Level 3 [Member]
Warrants Liability [Line Items]
Loss of fair value of warrants							$ 96,898,145
Empery Asset Management LP [Member]
Warrants Liability [Line Items]
Number of warrants issued				4,910,000	1,000,000
Exercise price per share (in Dollars per share)			$ 5	$ 7
Gem Global Yield LLC SCS (GEM) [Member]
Warrants Liability [Line Items]
Number of warrants issued						1,814,797
Exercise price (in Dollars per share)						$ 5
PIPE Warrants [Member]
Warrants Liability [Line Items]
Number of warrants issued		10,000,000
Unlisted Warrants [Member]
Warrants Liability [Line Items]
Exercise price per share (in Dollars per share)							$ 7
Warrants [Member]
Warrants Liability [Line Items]
Exercise price per share (in Dollars per share)			$ 5				$ 11.5
Issue of listed warrants (in Dollars)							$ 919,150
Warrants [Member] \| Empery Asset Management LP [Member]
Warrants Liability [Line Items]
Exercise price per share (in Dollars per share)					$ 11.45
Warrant exercised	1,000,000
Warrants [Member] \| Gem Global Yield LLC SCS (GEM) [Member]
Warrants Liability [Line Items]
Exercise price per share (in Dollars per share)						$ 10.71
Share value (in Dollars)									$ 27,200,000
Warrants [Member] \| CRML [Member]
Warrants Liability [Line Items]
Share value (in Dollars)									$ 27,200,000
Number of warrants issued	835,474
Warrants [Member] \| Sizzle Warrant Holders [Member]
Warrants Liability [Line Items]
Listed warrants							7,750,000