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Subsequent Events (Details Narrative) - CAD ($)	6 Months Ended	12 Months Ended
	Dec. 31, 2021	Jun. 30, 2021
Subsequent Events
Number of common shares issued for exercise of warrants (in shares)	375,830	11,245,133
Proceeds from exercise of warrants	$ 378,080
Number of share options granted in share-based payment arrangement	310,000
Proceeds from exercise of options	$ 365,000

X

- Definition

The number of share options granted in a share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2021-01-01
-Paragraph 45
-Subparagraph b
-Clause ii
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2021-en-r&anchor=para_45_b_ii&doctype=Standard
-URIDate 2021-03-24

+ Details

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X

- References

No definition available.

+ Details

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Namespace Prefix:	sli_
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X

- Definition

The number of common shares issued of exercise of warrants.

+ References

No definition available.

+ Details

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Namespace Prefix:	sli_
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X

- References

No definition available.

+ Details

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Namespace Prefix:	sli_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

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