CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Millions	Total	Common Stock	Capital in Excess of Par Value	Reinvested Earnings	Common Stock in Treasury	Accumulated Other Comprehensive (Loss) Income
Balances, beginning of period at Jun. 30, 2021	$ 1,392.3	$ 280.1	$ 322.6	$ 1,299.3	$ (317.4)	$ (192.3)
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(49.1)			(49.1)
Net gain (loss) on derivative instruments, net of tax	(1.4)					(1.4)
Pension and postretirement benefits, net of tax	26.2					26.2
Foreign currency translation	(6.0)					(6.0)
Cash dividends:
Common	(39.2)			(39.2)
Share-based compensation plans	7.7		(2.3)		10.0
Balances, end of period at Jun. 30, 2022	$ 1,330.5	$ 280.1	320.3	1,211.0	$ (307.4)	(173.5)
Balances, beginning of period (in shares) at Jun. 30, 2021	48,040,676	56,024,619
Balances, beginning of period (in shares) at Jun. 30, 2021					(7,983,943)
Common Shares
Stock options exercised (in shares)	891	891
Share-based compensation plans (in shares)	244,872				244,872
Balances, end of period (in shares) at Jun. 30, 2022	48,286,439	56,025,510
Balances, end of period (in shares) at Jun. 30, 2022					(7,739,071)
Increase (Decrease) in Stockholders' Equity
Net income (loss)	$ 56.4			56.4
Net gain (loss) on derivative instruments, net of tax	(12.5)					(12.5)
Pension and postretirement benefits, net of tax	37.4					37.4
Foreign currency translation	5.6					5.6
Cash dividends:
Common	(39.4)			(39.4)
Share-based compensation plans	13.1		3.7		$ 9.4
Stock options exercised	5.0	$ 0.6	4.4
Balances, end of period at Jun. 30, 2023	$ 1,396.1	$ 280.7	328.4	1,228.0	$ (298.0)	(143.0)
Common Shares
Stock options exercised (in shares)	117,621	117,621
Share-based compensation plans (in shares)	231,680				231,680
Balances, end of period (in shares) at Jun. 30, 2023	48,635,740	56,143,131
Balances, end of period (in shares) at Jun. 30, 2023	(7,507,391)				(7,507,391)
Increase (Decrease) in Stockholders' Equity
Net income (loss)	$ 186.5			186.5
Net gain (loss) on derivative instruments, net of tax	1.1					1.1
Pension and postretirement benefits, net of tax	51.2					51.2
Foreign currency translation	(3.2)					(3.2)
Cash dividends:
Common	(40.0)			(40.0)
Share-based compensation plans	9.6		0.9		$ 8.7
Stock options exercised	27.5	$ 4.2	23.3
Balances, end of period at Jun. 30, 2024	$ 1,628.8	$ 284.9	$ 352.6	$ 1,374.5	$ (289.3)	$ (93.9)
Common Shares
Stock options exercised (in shares)	835,532	835,532
Share-based compensation plans (in shares)	305,683				305,683
Balances, end of period (in shares) at Jun. 30, 2024	49,776,955	56,978,663
Balances, end of period (in shares) at Jun. 30, 2024	(7,201,708)				(7,201,708)