Retirement Plans (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($) plan
UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Number of plans | plan	3
United Kingdom Subsidiary [Member] | UK Plan
Defined Benefit Plan Disclosure [Line Items]
Contributions to defined benefit pension plans	$ 1.2
Anticipated additional contribution	$ 3.2