CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Millions	Total	Common Stock, Par Value of $5	Common Stock, Capital in Excess of Par Value	Reinvested Earnings	Common Stock in Treasury	Accumulated Other Comprehensive (Loss) Income
Balances at the beginning of the period at Jun. 30, 2022	$ 1,330.5	$ 280.1	$ 320.3	$ 1,211.0	$ (307.4)	$ (173.5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(6.9)			(6.9)
Pension and postretirement benefits, net of tax	1.0					1.0
Net loss on derivative instruments, net of tax	(5.3)					(5.3)
Foreign currency translation	(3.3)					(3.3)
Cash dividends:
Common stock	(9.8)			(9.8)
Share-based compensation plans	0.6		(6.0)		6.6
Balances at the end of the period at Sep. 30, 2022	1,306.8	280.1	314.3	1,194.3	(300.8)	(181.1)
Balances at the beginning of the period at Jun. 30, 2023	1,396.1	280.7	328.4	1,228.0	(298.0)	(143.0)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	43.9			43.9
Pension and postretirement benefits, net of tax	0.8					0.8
Net loss on derivative instruments, net of tax	(1.2)					(1.2)
Foreign currency translation	(2.1)					(2.1)
Cash dividends:
Common stock	(9.9)			(9.9)
Share-based compensation plans	(5.0)		(12.8)		7.8
Stock options exercised	6.7	1.9	4.8
Balances at the end of the period at Sep. 30, 2023	$ 1,429.3	$ 282.6	$ 320.4	$ 1,262.0	$ (290.2)	$ (145.5)