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Income Taxes Income tax (tables) (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013
Income Tax Expense (Benefit) | $ 10.8 | $ 4.2 | $ 14.2 | $ 5.1
Operating Expense [Member] |  |  |  |
Income Tax Expense (Benefit) | 11.9 | 8.1 | 17.5 | 9.6
Valuation Allowance of Deferred Tax Assets [Member] |  |  |  |
Income Tax Expense (Benefit) | 1.1 | (4.0) | (1.1) | (4.5)
Effect of Change in Marginal Tax Rate [Member] |  |  |  |
Income Tax Expense (Benefit) | 0 | 0 | (2.0) | 0
Other Expense [Member] |  |  |  |
Income Tax Expense (Benefit) | $ 0 | $ 0.1 | $ (0.2) | $ 0

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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 + Details
Name: | us-gaap_IncomeTaxExpenseBenefit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration