CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parentheticals) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026	Mar. 31, 2025
Statement of Comprehensive Income [Abstract]
Net unrealized derivative gain (loss) on cash flow hedges, tax expense (benefit)	$ 0.3	$ 0.8	$ 0.3	$ 0.9
Pension and other post-employment benefits (losses), tax expense (benefit)	$ 0.6	$ (0.4)	$ 3.3	$ 0.5

Amount, after reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income of defined benefit plan.

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