Retirement Benefits (Schedule of Net Perioodic Benefit Costs) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Pension Plans, Defined Benefit [Member]
Service cost	$ 1,134	$ 1,369	$ 2,265	$ 2,757
Interest cost	2,208	1,917	4,413	3,857
Expected return on plan assets	(3,203)	(2,693)	(6,394)	(5,417)
Amortization of: Net actuarial (gain) loss	245	458	489	926
Amortization of: Prior service cost (benefit)	17	16	35	33
Net periodic retirement pension (beneift) cost	401	1,067	808	2,156
Contributions paid	796	1,943	2,467	5,257
United States Pension Plans of US Entity, Defined Benefit [Member]
Service cost	872	1,107	1,744	2,214
Interest cost	1,603	1,392	3,213	2,784
Expected return on plan assets	(2,433)	(2,045)	(4,867)	(4,090)
Amortization of: Net actuarial (gain) loss	82	343	165	687
Amortization of: Prior service cost (benefit)	18	18	37	37
Net periodic retirement pension (beneift) cost	142	815	292	1,632
Contributions paid	200	1,500	300	3,000
Foreign Pension Plans, Defined Benefit [Member]
Service cost	262	262	521	543
Interest cost	605	525	1,200	1,073
Expected return on plan assets	(770)	(648)	(1,527)	(1,327)
Amortization of: Net actuarial (gain) loss	163	115	324	239
Amortization of: Prior service cost (benefit)	(1)	(2)	(2)	(4)
Net periodic retirement pension (beneift) cost	259	252	516	524
Contributions paid	596	443	2,167	2,257
Other Postretirement Benefit Plans, Defined Benefit [Member]
Service cost	12	18	24	36
Interest cost	358	311	716	622
Amortization of: Net actuarial (gain) loss	(50)	(17)	(100)	(34)
Amortization of: Prior service cost (benefit)	(39)	(39)	(79)	(79)
Net periodic retirement pension (beneift) cost	281	273	561	545
Contributions paid	$ 862	$ 587	$ 1,368	$ 1,343