Retirement Plans (Effect of One-Percentage-Point Change in Assumptions) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Sep. 30, 2014
Discount Rate [Member]
Effects of One-Percentage-Point Change in Assumptions [Line Items]
Effect on service and interest cost components, 1 percentage point increase	$ (0.1)
Effect on service and interest cost components, 1 percentage point decrease	0.7
Effect on benefit obligation, 1 percentage point increase	(50.3)
Effect on benefit obligation, 1 percentage point decrease	61.8
Effect on 2014 expense, 1 percentage point increase	(0.5)
Effect on 2014 expense, 1 percentage point decrease	0.5
Expected Return on Plan Assets [Member]
Effects of One-Percentage-Point Change in Assumptions [Line Items]
Effect on 2014 expense, 1 percentage point increase	(4.0)
Effect on 2014 expense, 1 percentage point decrease	$ 4.0

Defined Benefit Plan, Effect of One Percentage Point Decrease on Pension Expense

No definition available.

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- Definition

Defined Benefit Plan, Effect of One Percentage Point Increase on Pension Expense

+ References

No definition available.

+ Details

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- Definition

Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits.

+ 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 (m)

-URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920

+ Details

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- Definition

Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs.

+ References

+ Details

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- Definition

The effect of a one-percentage-point increase in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits.

+ References

+ Details

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- Definition

The effect of a one-percentage-point increase in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs.

+ References

+ Details

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