Pension Plans (Components Of Net Periodic Pension Cost) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Defined Benefit Plan Disclosure [Line Items]
Settlement loss	$ 0	$ 0	$ 66,332
Pension Plan [Member] | Domestic Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost of projected benefit obligation	0	0	4,591
Service cost	0	0	0
Expected return on plan assets	0	0	(1,364)
Amortization of prior service cost	0	0	0
Recognized actuarial loss (gain)	0	0	2,577
Settlement loss	0	0	66,332
Net periodic pension cost	0	0	72,136
Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost of projected benefit obligation	815	1,374	1,828
Service cost	1,696	1,599	1,466
Expected return on plan assets	(3,327)	(3,305)	(3,364)
Amortization of prior service cost	(5)	(5)	(4)
Recognized actuarial loss (gain)	3,385	2,292	1,815
Settlement loss	0	0	0
Net periodic pension cost	$ 2,564	$ 1,955	$ 1,741