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Retirement Benefits (Schedule of Net Perioodic Benefit Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Pension Plans, Defined Benefit [Member]
Service cost	$ 609	$ 700	$ 1,469	$ 1,406
Interest cost	1,720	2,011	3,472	4,054
Expected return on plan assets	(3,201)	(3,407)	(6,440)	(6,855)
Amortization of: Net (gains) losses	386	145	774	293
Amortization of: Prior service (benefit) cost	96	96	192	192
Net periodic retirement pension (benefit) cost	(390)	(455)	(533)	(910)
Contributions paid	139	121	528	1,222
United States Pension Plans of US Entity, Defined Benefit [Member]
Service cost	424	505	1,098	1,009
Interest cost	1,309	1,489	2,626	2,986
Expected return on plan assets	(2,535)	(2,662)	(5,077)	(5,332)
Amortization of: Net (gains) losses	323	99	646	198
Amortization of: Prior service (benefit) cost	96	96	192	192
Net periodic retirement pension (benefit) cost	(383)	(473)	(515)	(947)
Contributions paid	0	0	0	0
Foreign Pension Plans, Defined Benefit [Member]
Service cost	185	195	371	397
Interest cost	411	522	846	1,068
Expected return on plan assets	(666)	(745)	(1,363)	(1,523)
Amortization of: Net (gains) losses	63	46	128	95
Amortization of: Prior service (benefit) cost	0	0	0	0
Net periodic retirement pension (benefit) cost	(7)	18	(18)	37
Contributions paid	139	121	528	1,222
Other Postretirement Benefit Plans, Defined Benefit [Member]
Service cost	6	8	11	15
Interest cost	262	309	524	617
Amortization of: Net (gains) losses	39	(18)	78	(36)
Amortization of: Prior service (benefit) cost	(39)	(39)	(79)	(79)
Net periodic retirement pension (benefit) cost	268	260	534	517
Contributions paid	$ 840	$ 575	$ 1,221	$ 901

X

- 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=58740216&loc=d3e1928-114920

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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
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-Publisher FASB
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- Definition

An amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Expected Return on Plan Assets
-URI http://asc.fasb.org/extlink&oid=6512171

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- Definition

The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.

+ References

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-Publisher FASB
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The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Service Cost (Component of Net Periodic Pension Cost)
-URI http://asc.fasb.org/extlink&oid=6525008

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The amount of cash or cash equivalents contributed during the reporting period by the entity to fund non-pension postretirement benefits.

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-Name Accounting Standards Codification
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The amount of cash or cash equivalents contributed by the entity to fund its pension plans.

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