Reclamation and Environmental - Schedule of Variables of Weighted Average (Details)	6 Months Ended	12 Months Ended
Dec. 31, 2025	Jun. 30, 2025
Environmental Remediation Obligations [Abstract]
Weighted-average credit adjusted risk free rate	9.90%	9.90%
Weighted-average inflation rate	2.53%	2.53%

Weighted-average risk-free rate used to discount claim liability for financial guarantee insurance contract.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480081/944-40-50-9

Name:	us-gaap_FinancialGuaranteeInsuranceContractsClaimLiabilityWeightedAverageRiskFreeDiscountRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration