Contingent Liabilities and Commitments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Environmental assessment and remediation [Member]
Site Contingency [Line Items]
Accrued environmental assessment and remediation costs, total	$ 2.5	$ 2.5
Accrued environmental assessment and remediation costs, current	0.6	0.7
Accrued environmental assessment and remediation costs, noncurrent	1.9	$ 1.8
Potentially responsible party at various Superfund and state waste disposal sites [Member] | Maximum [Member]
Site Contingency [Line Items]
Site Contingency, Loss Exposure Not Accrued, Best Estimate	$ 0.5