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Schedule of Trust Investments Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2025		Jun. 30, 2025		Jun. 30, 2024
Platform Operator, Crypto Asset [Line Items]
Total	$ 129,315	[1]	$ 85,235	[1]	$ 43,136
Fair Value, Inputs, Level 1 [Member]
Platform Operator, Crypto Asset [Line Items]
Total	129,315		85,235
Fair Value, Inputs, Level 1 [Member] | Platinum [Member]
Platform Operator, Crypto Asset [Line Items]
Total	129,315		85,235
Fair Value, Inputs, Level 2 [Member]
Platform Operator, Crypto Asset [Line Items]
Total
Fair Value, Inputs, Level 2 [Member] | Platinum [Member]
Platform Operator, Crypto Asset [Line Items]
Total
Fair Value, Inputs, Level 3 [Member]
Platform Operator, Crypto Asset [Line Items]
Total
Fair Value, Inputs, Level 3 [Member] | Platinum [Member]
Platform Operator, Crypto Asset [Line Items]
Total
[1] Cost of investment in platinum: $94,108 and $65,762, respectively.

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- References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 405
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 5.FF.Q2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476188/405-10-S99-1

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- Definition

Investments held in physical commodities, such as gold, silver, platinum, crude oil, coal, sugar, rice, wheat.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(12))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(3)(d))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

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- Details

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