Discontinued Operations (Schedule of Operating Results) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sales	$ 12.7	$ 45.0	$ 40.0	$ 242.0
Income before taxes	0.5	10.2	3.3	66.3
Income tax provision	(0.1)	3.7	0.2	20.6
Income from operations of discontinued operations	0.6	6.5	3.1	45.7
Gain on sale of business and impairment/write-down, net of tax	0	120.8	0	120.8
Income from Discontinued Operations, net of tax	$ 0.6	$ 127.3	$ 3.1	$ 166.5