Retirement Benefits (Narrative) (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
Value of Company Stock Contributed to Defined Contribution Benefit Plans	$ 11,193	$ 9,780
Treasury Stock Issued During Period, Shares, Employee Benefit Plans	260	250
Pension Plans, Defined Benefit [Member]
Contributions paid	796	1,943	2,467	5,257
Net periodic retirement pension (beneift) cost	401	1,067	808	2,156
United States Pension Plans of US Entity, Defined Benefit [Member]
Contributions paid	200	1,500	300	3,000
Net periodic retirement pension (beneift) cost	142	815	292	1,632
Foreign Pension Plans, Defined Benefit [Member]
Contributions paid	596	443	2,167	2,257
Net periodic retirement pension (beneift) cost	259	252	516	524
Other Postretirement Benefit Plans, Defined Benefit [Member]
Net periodic retirement pension (beneift) cost	281	273	561	545
Total stockholders equity
Value of Company Stock Contributed to Defined Contribution Benefit Plans			11,193	9,780
Treasury Stock at Cost [Member]
Value of Company Stock Contributed to Defined Contribution Benefit Plans			$ 8,356	$ 7,857
Treasury Stock Issued During Period, Shares, Employee Benefit Plans			260	250