Discontinued Operations (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Mar. 31, 2013	Mar. 31, 2013
Discontinued Operations and Disposal Groups [Abstract]
Net sales	$ 9.0	$ 20.2
Cost of sales	7.9	18.8
Gross income	1.1	1.4
Operating expenses:
Selling, general and administrative	0	(0.2)
Operating income	1.1	1.6
Other expense	(0.1)	(0.4)
Income before income taxes	1.0	1.2
Provision for income taxes	0.4	0.4
Income from discontinued operations, net of tax	$ 0.6	$ 0.8