XML 51 R32.htm IDEA: XBRL DOCUMENT
v3.23.1

Exploration and Evaluation Expenditures - Arkansas Properties (Details) |  |  |  |  |  |  | 9 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 29, 2020 USD ($) | Dec. 29, 2019 USD ($) | Dec. 29, 2018 USD ($) | Jan. 28, 2018 USD ($) | Dec. 29, 2017 USD ($) | Jul. 26, 2017 CAD ($) a | Jul. 26, 2017 USD ($) a | Mar. 31, 2023 CAD ($) | Mar. 31, 2022 CAD ($)
Exploration and Evaluation Expenditures |  |  |  |  |  |  |  |  |
Purchase of exploration and evaluation assets |  |  |  |  |  |  |  | $ 15,806,296 | $ 2,069,120
Property, Columbian and Lafayette Counties, Arkansas | Vendor |  |  |  |  |  |  |  |  |
Exploration and Evaluation Expenditures |  |  |  |  |  |  |  |  |
Area of lease property (Acre) | a |  |  |  |  |  | 33,000 | 33,000 |  |
Purchase of exploration and evaluation assets | $ 750,000 | $ 700,000 | $ 600,000 | $ 500,000 |  |  |  |  |
Additional annual payment |  |  |  |  | $ 1,000,000 |  |  |  |
Period after agreement to begin annual payment |  |  |  |  | 48 months |  |  |  |
Net smelter return royalty (as a percent) |  |  |  |  | 2.50% |  |  |  |
Minimum royalty |  |  |  |  | $ 1,000,000 | $ 614,150 | $ 500,000 |  |

X
- Definition The cash outflow for the purchase of exploration and evaluation assets. [Refer: Exploration and evaluation assets [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2021-01-01 -Paragraph 16 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2021-en-r&anchor=para_16&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_PurchaseOfExplorationAndEvaluationAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The area of lease property. + References No definition available. + Details
Name: | sli_AreaOfLeaseProperty
Namespace Prefix: | sli_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | sli_IfrsStatementLineItems
Namespace Prefix: | sli_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of minimum royalty. + References No definition available. + Details
Name: | sli_MinimumRoyalty
Namespace Prefix: | sli_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Percentage of net smelter return royalty. + References No definition available. + Details
Name: | sli_NetSmelterReturnRoyalty
Namespace Prefix: | sli_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The period between the signing of agreement for purchase of exploration and evaluation assets and payment of annual payment, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Redemption notice period. + References No definition available. + Details
Name: | sli_PurchaseOfExplorationAndEvaluationAssetsAnnualPaymentBeginningPeriod
Namespace Prefix: | sli_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The additional annual payment for the purchase of exploration and evaluation of assets. + References No definition available. + Details
Name: | sli_PurchaseOfExplorationAndEvaluationOfAssetAdditionalAnnualPayment
Namespace Prefix: | sli_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=sli_PropertyColumbianAndLafayetteCountiesArkansasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CounterpartiesAxis=sli_VendorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |