CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Net sales	$ 651.9	$ 522.9
Cost of sales	527.8	468.1
Gross profit	124.1	54.8
Selling, general and administrative expenses	55.1	46.5
Operating income	69.0	8.3
Interest expense, net	12.7	12.6
Other expense, net	4.0	3.5
Income (loss) before income taxes	52.3	(7.8)
Income tax expense (benefit)	8.4	(0.9)
Net income (loss)	$ 43.9	$ (6.9)
EARNINGS (LOSS) PER COMMON SHARE:
Basic (in dollars per share)	$ 0.89	$ (0.14)
Diluted (in dollars per share)	$ 0.88	$ (0.14)
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
Basic (in shares)	49.2	48.7
Diluted (in shares)	49.9	48.7