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, 2014	$ 1,504.3	$ 275.8	$ 263.5	$ 1,311.6	$ (101.4)	$ (245.2)
Increase (Decrease) in Stockholders' Equity
Net income	58.7			58.7
Pension and postretirement benefits gain (loss), net of tax	(20.1)					(20.1)
Net gain (loss) on derivative instruments, net of tax	(36.1)					(36.1)
Unrealized gain on marketable securities, net of tax	0.1					0.1
Foreign currency translation	(26.9)					(26.9)
Cash Dividends:
Common @ $0.72 per share	(37.9)			(37.9)
Purchases of treasury stock	(124.5)				(124.5)
Share-based compensation plans	6.9		2.1		4.8
Stock options exercised	2.3	0.4	1.9
Tax shortfall on share-based compensation	(0.9)		(0.9)
Balances, end of period at Jun. 30, 2015	$ 1,325.9	$ 276.2	266.6	1,332.4	$ (221.1)	(328.2)
Balances, beginning of period (in shares) at Jun. 30, 2014	53,137,144	55,161,875			2,024,731
Common Shares
Purchase of treasury stock (in shares)	(2,995,272)				(2,995,272)
Stock options exercised (in shares)	73,067	73,067
Share-based compensation plans (in shares)	103,305				103,305
Balances, end of period (in shares) at Jun. 30, 2015	50,318,244	55,234,942			4,916,698
Increase (Decrease) in Stockholders' Equity
Net income	$ 11.3			11.3
Pension and postretirement benefits gain (loss), net of tax	(87.5)					(87.5)
Net gain (loss) on derivative instruments, net of tax	6.7					6.7
Unrealized gain on marketable securities, net of tax	0.0
Foreign currency translation	(0.9)					(0.9)
Cash Dividends:
Common @ $0.72 per share	(34.8)			(34.8)
Purchases of treasury stock	(123.9)				$ (123.9)
Share-based compensation plans	8.8		7.7		1.1
Stock options exercised	0.5	$ 0.1	0.4
Tax shortfall on share-based compensation	(1.2)		(1.2)
Balances, end of period at Jun. 30, 2016	$ 1,104.9	$ 276.3	273.5	1,308.9	$ (343.9)	(409.9)
Common Shares
Purchase of treasury stock (in shares)	(3,762,200)				(3,762,200)
Stock options exercised (in shares)	19,627	19,627
Share-based compensation plans (in shares)	24,454				24,454
Balances, end of period (in shares) at Jun. 30, 2016	46,600,125	55,254,569			8,654,444
Increase (Decrease) in Stockholders' Equity
Net income	$ 47.0			47.0
Pension and postretirement benefits gain (loss), net of tax	45.3					45.3
Net gain (loss) on derivative instruments, net of tax	19.5					19.5
Unrealized gain on marketable securities, net of tax	0.0
Foreign currency translation	2.0					2.0
Cash Dividends:
Common @ $0.72 per share	(34.1)			(34.1)
Share-based compensation plans	12.7		10.4		$ 2.3
Stock options exercised	2.2	$ 0.4	1.8
Tax shortfall on share-based compensation	(0.9)		(0.9)
Balances, end of period at Jun. 30, 2017	$ 1,198.6	$ 276.7	$ 284.8	$ 1,321.8	$ (341.6)	$ (343.1)
Common Shares
Purchase of treasury stock (in shares)	0
Stock options exercised (in shares)	95,089	95,089
Share-based compensation plans (in shares)	57,966				57,966
Balances, end of period (in shares) at Jun. 30, 2017	46,753,180	55,349,658			8,596,478