CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
OPERATING ACTIVITIES
Net income	$ 188,500,000	$ 47,000,000	$ 11,300,000
Adjustments to reconcile net income to net cash provided from operating activities:
Depreciation and amortization	116,600,000	117,800,000	119,300,000
Goodwill impairment charge	0	0	12,500,000
Non-cash excess inventory write-down	0	0	22,500,000
Non-cash restructuring and asset impairment charges	0	0	7,600,000
Deferred income taxes	(61,100,000)	41,600,000	800,000
Net pension expense	14,200,000	48,400,000	53,800,000
Payments from qualified pension plan associated with restructuring charges	0	0	9,400,000
Share-based compensation expense	17,600,000	13,000,000	8,700,000
Net loss on disposal of property and equipment and assets held for sale	2,500,000	2,500,000	600,000
Loss on divestiture of business	0	3,200,000	0
Changes in working capital and other:
Accounts receivable	(86,800,000)	(34,600,000)	48,200,000
Inventories	400,000	(74,600,000)	1,600,000
Other current assets	(9,600,000)	2,800,000	(2,100,000)
Accounts payable	10,700,000	42,500,000	(7,600,000)
Accrued liabilities	28,700,000	26,600,000	(13,500,000)
Pension plan contributions	(6,700,000)	(100,000,000)	0
Other postretirement plan contributions	(3,400,000)	(3,200,000)	(13,000,000)
Other, net	(2,400,000)	(2,700,000)	(2,700,000)
Net cash provided from operating activities	209,200,000	130,300,000	257,400,000
INVESTING ACTIVITIES
Purchases of property, equipment and software	(135,000,000)	(98,500,000)	(95,200,000)
Proceeds from disposals of property and equipment and assets held for sale	1,900,000	2,500,000	1,400,000
Acquisition of business	(13,300,000)	(35,300,000)	0
Proceeds from sales and maturities of marketable securities	700,000	900,000	900,000
Proceeds from divestiture of business	0	12,000,000	0
Proceeds from note receivable from the sale of equity method investment	6,300,000	6,300,000	0
Proceeds received from sale of equity method investment	0	0	6,300,000
Other	0	0	4,000,000
Net cash used for investing activities	(139,400,000)	(112,100,000)	(82,600,000)
FINANCING ACTIVITIES
Credit agreement borrowings	0	122,100,000	77,000,000
Credit agreement repayments	0	(122,100,000)	(77,000,000)
Dividends paid	(34,400,000)	(34,100,000)	(34,800,000)
Payments of debt issue costs	0	(1,400,000)	0
Purchases of treasury stock	0	0	(123,900,000)
Payments on seller financed debt related to purchase of software	0	0	(4,900,000)
Payments on long-term debt	(55,000,000)	0	0
Tax benefits on share-based compensation	0	500,000	0
Proceeds from stock options exercised	12,900,000	2,200,000	500,000
Withholding tax payments on share-based compensation awards	(2,400,000)	(1,000,000)	(500,000)
Net cash used for financing activities	(78,900,000)	(33,800,000)	(163,600,000)
Effect of exchange rate changes on cash and cash equivalents	(1,000,000)	(100,000)	800,000
(DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(10,100,000)	(15,700,000)	12,000,000
Cash and cash equivalents at beginning of year	66,300,000	82,000,000	70,000,000
Cash and cash equivalents at end of year	$ 56,200,000	$ 66,300,000	$ 82,000,000