Borrowings (Interest Expense Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Interest expense incurred	$ 0.4	$ 0.4	$ 0.8	$ 0.7
South Africa [Member] | Short term Debt [Member]
Debt Instrument [Line Items]
Interest expense incurred	1.8	0.6	2.4	1.3
Long-term Debt [Member] | South Africa [Member]
Debt Instrument [Line Items]
Interest expense incurred	4.3	4.1	8.5	8.1
Prepaid credit facility fees	$ 0.1	$ 0.1	$ 0.1	$ 0.3