CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Income Statement [Abstract]
Net sales	$ 455.6	$ 549.8
Cost of sales	387.0	480.7
Gross profit	68.6	69.1
Selling, general and administrative expenses	43.4	47.0
Restructuring charges	0.4	0.0
Operating income	24.8	22.1
Interest expense	(6.6)	(7.0)
Other (expense) income, net	(2.1)	4.9
Income before income taxes	16.1	20.0
Income tax expense	7.2	6.5
Net income	$ 8.9	$ 13.5
EARNINGS PER COMMON SHARE:
Basic (in dollars per share)	$ 0.18	$ 0.25
Diluted (in dollars per share)	$ 0.18	$ 0.25
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
Basic (in shares)	49.7	53.5
Diluted (in shares)	49.9	53.7
Cash dividends per common share (in dollars per share)	$ 0.18	$ 0.18