CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Statement of Cash Flows [Abstract]
Net income (loss)	$ 56.4	$ (49.1)	$ (229.6)
Adjustments to reconcile net income (loss) to net cash provided from operating activities:
Depreciation and amortization	131.0	131.4	123.6
LIFO decrement	0.0	0.0	52.2
Goodwill impairment charge	0.0	0.0	52.8
Noncash inventory write-downs from restructuring	0.0	0.0	4.2
Acquisition-related contingent liability release	0.0	(4.7)	0.0
Noncash restructuring and asset impairment charges	0.0	0.0	16.2
Debt extinguishment losses, net	0.0	6.0	8.2
Deferred income taxes	(0.4)	(3.1)	(33.6)
Net pension expense (income)	19.9	(7.3)	24.6
Share-based compensation expense	16.4	10.8	10.4
Net loss on disposal of property, plant, and equipment and assets held for sale	2.5	2.0	0.3
Changes in working capital and other:
Accounts receivable	(144.5)	(79.0)	(14.9)
Inventories	(140.3)	(71.9)	238.5
Other current assets	13.0	8.3	(33.9)
Accounts payable	29.2	95.7	22.4
Accrued liabilities	38.2	(24.5)	33.8
Pension plan contributions	0.0	(0.7)	(19.9)
Other postretirement plan contributions	(3.3)	(1.7)	(2.7)
Other, net	(3.4)	(6.2)	(2.6)
Net cash provided from operating activities	14.7	6.0	250.0
INVESTING ACTIVITIES
Purchases of property, plant, equipment and software	(82.3)	(91.3)	(100.5)
Proceeds from disposals of property, plant and equipment and assets held for sale	0.0	2.2	1.6
Proceeds from divestiture of business	0.0	0.0	20.0
Net cash used for investing activities	(82.3)	(89.1)	(78.9)
FINANCING ACTIVITIES
Net change in short-term credit agreement borrowings	0.0	0.0	(170.0)
Credit agreement borrowings	183.7	0.0	0.0
Credit agreement repayments	(183.7)	0.0	0.0
Proceeds from issuance of long-term debt, net of offering costs	0.0	296.6	395.5
Payments on long-term debt	0.0	(300.0)	(250.0)
Payments for debt extinguishment costs, net	0.0	(6.0)	(8.2)
Payments for debt issue costs	(1.9)	(0.8)	(2.5)
Dividends paid	(39.4)	(39.2)	(39.1)
Proceeds from stock options exercised	5.0	0.0	0.5
Withholding tax payments on share-based compensation awards	(3.8)	(3.4)	(2.3)
Net cash used for financing activities	(40.1)	(52.8)	(76.1)
Effect of exchange rate changes on cash and cash equivalents	(2.0)	2.7	(0.7)
(DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(109.7)	(133.2)	94.3
Cash and cash equivalents at beginning of year	154.2	287.4	193.1
Cash and cash equivalents at end of year	$ 44.5	$ 154.2	$ 287.4