Pension Plans (Change In Benefit Obligation And Plan Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation—beginning of year	$ 78,188	$ 218,559
Service cost	1,599	1,466
Interest cost	1,374	6,419
Actuarial loss	10,556	3,594
Foreign exchange impact	2,431	(9,515)
Participant contributions	147	198
Benefits paid	(1,600)	(7,183)
Settlements	0	(135,350)
Projected benefit obligation—end of year	92,695	78,188	$ 218,559
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at fair value-beginning of year	57,961	157,350
Actual return on plan assets	1,742	1,878
Employer contributions	1,978	46,700	12,900
Participant contributions	147	198
Foreign exchange impact	1,707	(5,632)
Settlements	0	(135,350)
Benefits paid	(1,600)	(7,183)
Plan assets at fair value-end of year	61,935	57,961	157,350
Underfunded status	(30,760)	(20,227)
Accumulated benefit obligation-end of year	88,768	74,928
Non-current liability	(30,760)	(20,227)
Pension and Other Postretirement Defined Benefit Plans, Current Liabilities	0	0
Unrecognized actuarial loss	(38,667)	(28,339)
U.S. Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation—beginning of year	0	134,453
Service cost	0	0	0
Interest cost	0	4,591	5,461
Actuarial loss	0	1,606
Foreign exchange impact	0	0
Participant contributions	0	0
Benefits paid	0	(5,300)
Settlements	0	(135,350)
Projected benefit obligation—end of year	0	0	134,453
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at fair value-beginning of year	0	112,859
Actual return on plan assets	0	2,316
Employer contributions	0	25,475
Participant contributions	0	0
Foreign exchange impact	0	0
Settlements	0	(135,350)
Benefits paid	0	(5,300)
Plan assets at fair value-end of year	0	0	112,859
Underfunded status	0	0
Accumulated benefit obligation-end of year	0	0
Non-current liability	0	0
Pension and Other Postretirement Defined Benefit Plans, Current Liabilities	0	0
Unrecognized actuarial loss	0	0
International Plans [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation—beginning of year	78,188	84,106
Service cost	1,599	1,466	1,659
Interest cost	1,374	1,828	2,442
Actuarial loss	10,556	1,988
Foreign exchange impact	2,431	(9,515)
Participant contributions	147	198
Benefits paid	(1,600)	(1,883)
Settlements	0	0
Projected benefit obligation—end of year	92,695	78,188	84,106
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at fair value-beginning of year	57,961	44,491
Actual return on plan assets	1,742	(438)
Employer contributions	1,978	21,225
Participant contributions	147	198
Foreign exchange impact	1,707	(5,632)
Settlements	0	0
Benefits paid	(1,600)	(1,883)
Plan assets at fair value-end of year	61,935	57,961	$ 44,491
Underfunded status	(30,760)	(20,227)
Accumulated benefit obligation-end of year	88,768	74,928
Non-current liability	(30,760)	(20,227)
Pension and Other Postretirement Defined Benefit Plans, Current Liabilities	0	0
Unrecognized actuarial loss	$ (38,667)	$ (28,339)