Retirement Benefits (Schedule of Estimated Remaining Cash Contributions) (Details) $ in Thousands	Mar. 31, 2022 USD ($)
Other Postretirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated future employer contributions in the current fiscal year	$ 1,871
United Kingdom | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated future employer contributions in the current fiscal year	627
Germany [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated future employer contributions in the current fiscal year	$ 348