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Retirement Plans (Components of Accumulated Other Comprehensive Income (Loss) Related to Pension and Other Postretirement Benefits) (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Sep. 30, 2014 Pension Plan, Defined Benefit [Member] | Sep. 30, 2013 Pension Plan, Defined Benefit [Member] | Sep. 30, 2012 Pension Plan, Defined Benefit [Member] | Sep. 30, 2015 Scenario, Forecast [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Defined Benefit Plans, Expected Future Amortization Into Net Periodic Benefit Cost in Year One |  |  |  | $ 3.2
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) | 0 | 0 | 0.6 | 0
Defined Benefit Plan, Amortization of Gains (Losses) | $ (3.5) | $ (9.0) | $ (6.0) | $ 3.2

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- Definition Defined Benefit Plans, Expected Future Amortization Into Net Periodic Benefit Cost in Year One + References No definition available. + Details
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- Definition The amount of gains or losses recognized in net periodic benefit cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(4) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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- Definition The amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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