Borrowings (Interest Expense Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026	Mar. 31, 2025
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Interest expense incurred	$ 1.5	$ 0.4	$ 4.8	$ 0.4
South Africa [Member] \| Short term Debt [Member]
Debt Instrument [Line Items]
Interest expense incurred	0.8	0.6	1.9	2.4
Long-term Debt [Member] \| South Africa [Member]
Debt Instrument [Line Items]
Interest expense incurred	2.3	4.2	9.8	4.2
Prepaid credit facility fees	$ 0.1	$ 0.1	$ 0.2	$ 0.1

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