Retirement Benefits (Schedule of Net Periodic Benefit Costs) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 543	$ 1,010
Interest cost	2,574	1,746
Expected return on plan assets	(2,625)	(3,358)
Amortization of: Net actuarial loss (gain)	(75)	211
Amortization of: Prior service cost	179	251
Net periodic retirement pension (benefit) cost	596	(140)
Contributions paid	562	688
Other Postretirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	226	144
Amortization of: Net actuarial loss (gain)	(124)	(24)
Net periodic retirement pension (benefit) cost	102	120
Contributions paid - other postretirement plans	441	471
United States [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	223	389
Interest cost	1,824	1,320
Expected return on plan assets	(2,074)	(2,713)
Amortization of: Net actuarial loss (gain)	73	65
Amortization of: Prior service cost	174	245
Net periodic retirement pension (benefit) cost	220	(694)
Other Countries [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	320	621
Interest cost	750	426
Expected return on plan assets	(551)	(645)
Amortization of: Net actuarial loss (gain)	(148)	146
Amortization of: Prior service cost	5	6
Net periodic retirement pension (benefit) cost	376	554
Contributions paid	$ 562	$ 688