CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Income Statement [Abstract]
Net sales	$ 1,211.4	$ 1,252.0
Cost of sales	1,011.7	1,069.2
Gross income	199.7	182.8
Operating expenses:
Selling, general and administrative	151.0	139.3
Amortization of purchased intangibles	12.5	13.2
Total operating expenses	163.5	152.5
Operating income	36.2	30.3
Other income (expense):
Interest expense	(14.7)	(14.6)
Interest income	0.8	0.5
Miscellaneous, net	1.3	0.0
Income before income taxes and equity in earnings of unconsolidated affiliates	23.6	16.2
Provision for income taxes	5.2	1.7
Income before equity in earnings of unconsolidated affiliates	18.4	14.5
Equity in earnings of unconsolidated affiliates	0.8	0.1
Net income	$ 19.2	$ 14.6
Earnings per share attributable to common shareholders:
Basic earnings per share (in dollars per share)	$ 0.26	$ 0.20
Diluted earnings per share (in dollars per share)	$ 0.26	$ 0.19