Retirement Benefits (Schedule of Amounts Expected to be Amortized from Accumulated Other Comprehensive Income (Loss) and Reported as a Component of Net Periodic Benefit Cost During the Next Fiscal Year) (Details) - Defined Benefit Pension Plan [Member] $ in Thousands	Sep. 30, 2019 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Prior service cost	$ 958
Net actuarial losses	2,447
United States [Member]
Defined Benefit Plan Disclosure [Line Items]
Prior service cost	936
Net actuarial losses	1,430
Other Countries [Member]
Defined Benefit Plan Disclosure [Line Items]
Prior service cost	22
Net actuarial losses	$ 1,017