The amount of financial liabilities classified as derivative instruments. [Refer: Financial assets; Derivatives [member]]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_55&doctype=Standard
-URIDate 2023-03-23

+ Details

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

- Definition

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

+ References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfInvestmentPropertyLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The increase (decrease) in the number of shares outstanding. [Refer: Number of shares outstanding]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 79
-Subparagraph a
-Clause iv
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_79_a_iv&doctype=Standard
-URIDate 2023-03-23

+ Details

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

- Definition

The amount of investments accounted for using the equity method. The equity method is a method of accounting whereby the investment is initially recognised at cost and adjusted thereafter for the post-acquisition change in the investor's share of net assets of the investee. The investor's profit or loss includes its share of the profit or loss of the investee. The investor's other comprehensive income includes its share of the other comprehensive income of the investee. [Refer: At cost [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 8
-IssueDate 2023-01-01
-Paragraph 24
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2023-en-r&anchor=para_24_a&doctype=Standard
-URIDate 2023-03-23

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2023-01-01
-Paragraph B16
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2023-en-r&anchor=para_B16&doctype=Appendix&subtype=B
-URIDate 2023-03-23

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 54
-Subparagraph e
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_54_e&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_InvestmentAccountedForUsingEquityMethod
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The increase in equity through the issue of equity instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 106
-Subparagraph d
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_106_d_iii&doctype=Standard
-URIDate 2023-03-23

+ Details

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

- Definition

The percentage of voting equity interests acquired in a business combination. [Refer: Business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2023-01-01
-Paragraph B64
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2023-en-r&anchor=para_B64_c&doctype=Appendix&subtype=B
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_PercentageOfVotingEquityInterestsAcquired
Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The value of significant unobservable input used in the measurement of the fair value of entity's own equity instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 13
-IssueDate 2023-01-01
-Paragraph 93
-Subparagraph d
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2023-en-r&anchor=para_93_d&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_SignificantUnobservableInputEntitysOwnEquityInstruments
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Equity investment from investor.

+ References

No definition available.

+ Details

Name:	laac_EquityInvestmentFromInvestor
Namespace Prefix:	laac_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Financial advisory fees and other transaction costs.

+ References

No definition available.

+ Details

Name:	laac_FinancialAdvisoryFeesAndOtherTransactionCosts
Namespace Prefix:	laac_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Gains losses recognised in profit or loss fair value measurement assets liabilities.

+ References

No definition available.

+ Details

Name:	laac_GainsLossesRecognisedInProfitOrLossFairValueMeasurementAssetsLiabilities
Namespace Prefix:	laac_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Investment agreement expiration date.

+ References

No definition available.

+ Details

Name:	laac_InvestmentAgreementExpirationDate1
Namespace Prefix:	laac_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of issued and outstanding shares.

+ References

No definition available.

+ Details

Name:	laac_PercentageOfIssuedAndOutstandingShares
Namespace Prefix:	laac_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Purchase price per share.

+ References

No definition available.

+ Details

Name:	laac_PurchasePricePerShare
Namespace Prefix:	laac_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Remaining balance of investment to commons shares.

+ References

No definition available.

+ Details

Name:	laac_RemainingBalanceOfInvestmentToCommonsShares
Namespace Prefix:	laac_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Subscribed for common shares.

+ References

No definition available.

+ Details

Name:	laac_SubscribedForCommonShares
Namespace Prefix:	laac_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Subscription price per share.

+ References

No definition available.

+ Details

Name:	laac_SubscriptionPricePerShare
Namespace Prefix:	laac_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Transaction cost related to derivative expense

+ References

No definition available.

+ Details

Name:	laac_TransactionCostRelatedToDerivativeExpense
Namespace Prefix:	laac_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Transaction cost related to parent investment.

+ References

No definition available.

+ Details

Name:	laac_TransactionCostRelatedToParentInvestment
Namespace Prefix:	laac_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	laac_InvestorAxis=laac_GeneralMotorsHoldingLlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ContinuingAndDiscontinuedOperationsAxis=ifrs-full_DiscontinuedOperationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_UnobservableInputsAxis=laac_VolatilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_UnobservableInputsAxis=laac_SharePriceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_UnobservableInputsAxis=laac_RiskFreeRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_UnobservableInputsAxis=laac_ExpectedDividendMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfInvestmentPropertyAxis=laac_TrancheOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfInvestmentPropertyAxis=laac_TrancheTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Agreements With General Motors - Additional Information (Details) $ / shares in Units, $ in Thousands				12 Months Ended
	Sep. 30, 2023 USD ($)	Feb. 16, 2023 USD ($) shares	Jan. 30, 2023 USD ($) $ / shares shares	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Oct. 03, 2023 USD ($)	Oct. 02, 2023	Jul. 31, 2023 $ / shares
Disclosure of detailed information about investment property [line items]
Derivative fair value			$ 33,194	$ 0
Change in the fair value of the derivative				$ 22,379	$ 44,570
Investment in Arena Minerals					$ 17,276	$ 0
General Motors Holding LLC
Disclosure of detailed information about investment property [line items]
Equity investment from investor			650,000
Acquisition percentage				100.00%
Equity Investment From Investor			$ 650,000
General Motors Holding LLC \| Discontinued Operations
Disclosure of detailed information about investment property [line items]
Change in the fair value of the derivative	$ 32,824
General Motors Holding LLC \| Volatility
Disclosure of detailed information about investment property [line items]
Derivative inputs			0.5834				0.4913
General Motors Holding LLC \| Share Price
Disclosure of detailed information about investment property [line items]
Derivative inputs			0.2199				0.1701
General Motors Holding LLC \| Risk-Free Rate
Disclosure of detailed information about investment property [line items]
Derivative inputs			0.0477				0.0568
General Motors Holding LLC \| Expected Dividend [member]
Disclosure of detailed information about investment property [line items]
Derivative inputs			0				0
Tranche One \| General Motors Holding LLC
Disclosure of detailed information about investment property [line items]
Issue of equity		$ 320,148
Number of shares issued \| shares		15,002,000
Financial advisory fees and other transaction costs			$ 16,977
Tranche Two \| General Motors Holding LLC
Disclosure of detailed information about investment property [line items]
Derivative fair value			33,194
Remaining balance of investment to commons shares			286,954
Equity investment from investor		$ 330,000	$ 330,000
Subscribed For Common Shares \| shares			2.000
Investment Agreement Expiration Date				2024-08
Transaction cost related to derivative expense			$ 1,760
Transaction cost related to parent investment			$ 15,217
Purchase price per share \| $ / shares			$ 27.74
Equity Investment From Investor		$ 330,000	$ 330,000
Tranche Two \| General Motors Holding LLC \| Top of Range
Disclosure of detailed information about investment property [line items]
Subscription price per share \| $ / shares								$ 27.74
Investment in Arena Minerals				$ 330,000
Tranche Two \| General Motors Holding LLC \| Bottom of Range
Disclosure of detailed information about investment property [line items]
Percentage of issued and outstanding shares								20.00%