Discontinued Operations (Schedule of Operating Results) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss before taxes	$ (3.8)	$ (2.5)	$ (21.3)	$ (4.8)
Income tax provision	(2.7)	0.6	0.6	1.2
Loss from operations of discontinued operations	(6.5)	(1.9)	(20.7)	(3.6)
Loss on disposal, net of tax	(846.6)	0.0	(846.6)	0.0
Income (loss) from Discontinued Operations, net of tax	$ (853.1)	$ (1.9)	$ (867.3)	$ (3.6)