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Distributed Operations - Additional Information (Details) - USD ($) $ in Thousands		12 Months Ended
	Oct. 04, 2023	Dec. 31, 2023	Oct. 03, 2023
Disclosure of Distributed Operations [line Items]
Fair value of net assets distributed	$ 1,680,501
Gain on distribution of assets upon seperation		$ 1,267,552
Lithium Americas
Disclosure of Distributed Operations [line Items]
Cash transferred			$ 275,499
Fair value of net assets distributed	$ 1,680,501

X

- Definition

The fair value, at acquisition date, of cash transferred as consideration in a business combination. [Refer: Total for all business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2024-01-01
-Paragraph B64
-Subparagraph f
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2024-en-r&anchor=para_B64_f_i&doctype=Appendix&subtype=B
-URIDate 2024-03-27

+ Details

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Period Type:	instant

X

- Definition

Line items represents distributed operations.

+ References

No definition available.

+ Details

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Namespace Prefix:	lar_
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X

- Definition

Fair value of net assets distributed.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Gain loss on distribution of assets upon seperation.

+ References

No definition available.

+ Details

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Namespace Prefix:	lar_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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X

- Details

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Namespace Prefix:
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Balance Type:
Period Type: