Pension Plans (Components Of Net Periodic Pension Cost) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Defined Benefit Plan Disclosure [Line Items]
Interest cost of projected benefit obligation	$ 8,044	$ 8,009
Service cost	1,882	1,782
U.S. Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost of projected benefit obligation	5,490	5,627	5,626
Service cost	0	0	0
Expected return on plan assets	(5,412)	(5,373)	(4,881)
Amortization of prior service cost	0	0	0
Recognized actuarial loss (gain)	2,967	2,549	2,344
Net periodic pension cost	3,045	2,803	3,089
International Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost of projected benefit obligation	2,554	2,382	2,401
Service cost	1,882	1,782	1,563
Expected return on plan assets	(1,929)	(2,254)	(2,291)
Amortization of prior service cost	(7)	0	0
Recognized actuarial loss (gain)	341	334	(26)
Net periodic pension cost	$ 2,841	$ 2,244	$ 1,647