Pension Plans (Components Of Net Periodic Pension Cost) (Details) (USD $) In Thousands	12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
Defined Benefit Plan Disclosure [Line Items]
Interest cost of projected benefit obligation	$ 8,009	$ 8,027
Service cost	1,782	1,563
U.S. Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost of projected benefit obligation	5,627	5,626	5,695
Expected return on plan assets	(5,373)	(4,881)	(4,974)
Recognized actuarial loss (gain)	2,549	2,344	1,226
Net periodic pension cost	2,803	3,089	1,947
International Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost of projected benefit obligation	2,382	2,401	2,312
Service cost	1,782	1,563	1,410
Expected return on plan assets	(2,254)	(2,291)	(1,903)
Recognized actuarial loss (gain)	334	(26)	(102)
Net periodic pension cost	2,244	1,647	1,717
Subsequent Year, Estimated Cost [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic pension cost	$ 6,000