CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parentheticals) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024
Statement of Comprehensive Income [Abstract]
Net unrealized derivative gain (loss) on cash flow hedges, tax expense (benefit)	$ 0.0	$ (0.3)	$ 0.0	$ 0.1
Pension and other post-employment benefits (losses), tax expense (benefit)	$ 0.3	$ 1.3	$ 2.7	$ 0.9