Retirement Benefits (Schedule of Health Care Costs Sensitivity) (Details) (Other Postretirement Benefit Plans, Defined Benefit [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
Sep. 30, 2014
Other Postretirement Benefit Plans, Defined Benefit [Member]
Effect on projected fiscal year 2015 service and interest cost, 1% increase	$ 121
Effect on projected fiscal year 2015 service and interest cost, 1% decrease	(106)
Effect on accumulated postretirement benefit obligation, 1% increase	2,658
Effect on accumulated postretirement benefit obligation, 1% decrease	$ (2,336)

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.

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

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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

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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.

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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.

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