Rate Activity (Details) - USD ($) $ in Thousands			3 Months Ended
	Jan. 03, 2022	Aug. 20, 2021	Mar. 31, 2022
Illinois And North Carolina [Member]
Water And Wastewater Rates [Line Items]
Base rate increase (decrease)			$ 6,789
New Jersey, Ohio And Indiana [Member]
Water And Wastewater Rates [Line Items]
Base rate increase (decrease)			$ 1,378
Pennsylvania [Member]
Water And Wastewater Rates [Line Items]
Requested rate increase		$ 97,685
Base rate increase designed to increase total operating revenues on an annual basis		17.90%
Kentucky [Member]
Water And Wastewater Rates [Line Items]
Base rate increase (decrease)	$ 5,238