Litigation (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022
Loss Contingencies [Line Items]
Potential liabilities related to litigation and environmental matters	$ 25.4	$ 32.9	$ 30.0
Insurance Receivable	3.3	10.4	7.1
Regulatory Assets	$ 20.9	$ 20.9	$ 20.8