Borrowings (Interest Expense Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Interest expense incurred	$ 7.2	$ 2.9	$ 1.4
South Africa [Member] \| Short-term Debt [Member]
Debt Instrument [Line Items]
Interest expense incurred	2.5	4.2
South Africa [Member] \| Long-term Debt [Member]
Debt Instrument [Line Items]
Interest expense incurred	14.4	16.9	16.1
Prepaid credit facility fees	$ 0.3	$ 0.4	$ 0.4

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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+ Details