CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (Unaudited) - 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, period start at Jun. 30, 2018	$ 1,485.9	$ 278.6	$ 310.0	$ 1,475.9	$ (338.8)	$ (239.8)
Increase (Decrease) in Stockholders' Equity
Net income	118.1			118.1
Pension and postretirement benefits gain, net of tax	5.1					5.1
Net (loss) gain on derivative instruments, net of tax	(35.2)					(35.2)
Marketable securities gain, net of tax	0.3					0.3
Foreign currency translation (loss) gain	(0.9)					(0.9)
Cash Dividends:
Common	(28.9)			(28.9)
Share-based compensation plans	9.5		6.3		3.2
Stock options exercised	3.7	0.4	3.3
Balances, period end at Mar. 31, 2019	1,557.6	279.0	319.6	1,566.1	(335.6)	(271.5)
Balances, period start at Dec. 31, 2018	1,505.5	279.0	315.0	1,524.6	(335.6)	(277.5)
Increase (Decrease) in Stockholders' Equity
Net income	51.1			51.1
Pension and postretirement benefits gain, net of tax	1.7					1.7
Net (loss) gain on derivative instruments, net of tax	3.2					3.2
Marketable securities gain, net of tax	0.0
Foreign currency translation (loss) gain	1.1					1.1
Cash Dividends:
Common	(9.6)			(9.6)
Share-based compensation plans	4.6		4.6
Stock options exercised	0.0
Balances, period end at Mar. 31, 2019	1,557.6	279.0	319.6	1,566.1	(335.6)	(271.5)
Balances, period start at Jun. 30, 2019	1,520.1	279.0	320.4	1,605.3	(332.8)	(351.8)
Increase (Decrease) in Stockholders' Equity
Net income	119.9			119.9
Pension and postretirement benefits gain, net of tax	9.1					9.1
Net (loss) gain on derivative instruments, net of tax	(1.3)					(1.3)
Marketable securities gain, net of tax	0.0
Foreign currency translation (loss) gain	(11.3)					(11.3)
Cash Dividends:
Common	(29.1)			(29.1)
Share-based compensation plans	6.8	0.5	1.6		4.7
Stock options exercised	4.3	0.6	3.7
Balances, period end at Mar. 31, 2020	1,618.5	280.1	325.7	1,696.1	(328.1)	(355.3)
Balances, period start at Dec. 31, 2019	1,603.4	280.1	322.1	1,665.9	(328.4)	(336.3)
Increase (Decrease) in Stockholders' Equity
Net income	39.9			39.9
Pension and postretirement benefits gain, net of tax	3.1					3.1
Net (loss) gain on derivative instruments, net of tax	(8.9)					(8.9)
Marketable securities gain, net of tax	0.0
Foreign currency translation (loss) gain	(13.2)					(13.2)
Cash Dividends:
Common	(9.7)			(9.7)
Share-based compensation plans	3.9		3.6		0.3
Stock options exercised	0.0
Balances, period end at Mar. 31, 2020	$ 1,618.5	$ 280.1	$ 325.7	$ 1,696.1	$ (328.1)	$ (355.3)