Inventories - Summary of Components of Inventory (Parenthetical) (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Jun. 30, 2025
Inventory [Line Items]
Restricted inventories	$ 1,447,112	$ 484,733
Borrowed Precious Metals
Inventory [Line Items]
Restricted inventories	$ 837,400	$ 0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_InventoryLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration