Pension Plans (Components Of Net Periodic Pension Cost) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Defined Benefit Plan Disclosure [Line Items]
Interest cost of projected benefit obligation	$ 1,374	$ 6,419
Service cost	1,599	1,466
Settlement loss	0	66,332	$ 0
U.S. Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost of projected benefit obligation	0	4,591	5,461
Service cost	0	0	0
Expected return on plan assets	0	(1,364)	(7,151)
Amortization of prior service cost	0	0	0
Recognized actuarial loss (gain)	0	2,577	2,213
Settlement loss	0	66,332	0
Net periodic pension cost	0	72,136	523
International Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost of projected benefit obligation	1,374	1,828	2,442
Service cost	1,599	1,466	1,659
Expected return on plan assets	(3,305)	(3,364)	(2,506)
Amortization of prior service cost	(5)	(4)	(5)
Recognized actuarial loss (gain)	2,292	1,815	1,181
Settlement loss	0	0	0
Net periodic pension cost	$ 1,955	$ 1,741	$ 2,771