Derivative Instruments and Hedging Transactions - Summary of Net Gains (Losses) on Derivative Instruments (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Derivative [Line Items]
Realized gains (losses) on futures commodity contracts, net	$ 11,809	$ (101,020)	$ 1,662
Future commodity and forward contracts
Derivative [Line Items]
Unrealized gains (losses) on open futures commodity and forward contracts and open sale and purchase commitments, net	259,358	(50,496)	18,225
Commodity Contract
Derivative [Line Items]
Realized losses on futures commodity contracts, net	$ (247,549)	$ (50,524)	$ (16,563)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Cost of Product and Service Sold	Cost of Product and Service Sold	Cost of Product and Service Sold

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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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.

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Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

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