Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319

Name:	us-gaap_DeferredTaxAssetsValuationAllowance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Income Taxes (Summary of Valuation Allowance) (Details) (USD $) In Millions, unless otherwise specified				12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2014 Continuing Operations [Member]	Sep. 30, 2013 Continuing Operations [Member]	Sep. 30, 2014 Discontinued Operations [Member]	Sep. 30, 2013 Discontinued Operations [Member]	Sep. 30, 2014 Accumulated Other Comprehensive Income (Loss) [Member]	Sep. 30, 2013 Accumulated Other Comprehensive Income (Loss) [Member]	Sep. 30, 2014 Other Assets [Member]	Sep. 30, 2013 Other Assets [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	$ 0.7	$ 10.3	$ 49.2
Valuation Allowance, Deferred Tax Asset, Change in Amount				(9.6)	(8.5)	0	(2.1)	0	(27.8)	0	(0.5)
Balance at end of year	$ 0.7	$ 10.3	$ 49.2