Rate Activity (Details) - USD ($) $ in Thousands					6 Months Ended
	Jun. 30, 2022	Jun. 07, 2022	May 16, 2022	Jan. 03, 2022	Jun. 30, 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]
Authorized increase in revenue			$ 69,251
Base rate increase (decrease)			$ 104,721
Base rate increase designed to increase total operating revenues on an annual basis			7.20%		0.00%
Distribution system improvement charges reset level upon new base rates			$ 35,470
Ohio [Member]
Water And Wastewater Rates [Line Items]
Base rate increase (decrease)					$ 5,483
Kentucky [Member]
Water And Wastewater Rates [Line Items]
Base rate increase (decrease)		$ 260		$ 5,238
Year 1 [Member] | North Carolina [Member]
Water And Wastewater Rates [Line Items]
Base rate increase (decrease)	$ 18,064
Year 2 [Member] | North Carolina [Member]
Water And Wastewater Rates [Line Items]
Base rate increase (decrease)	4,303
Year 3 [Member] | North Carolina [Member]
Water And Wastewater Rates [Line Items]
Base rate increase (decrease)	$ 4,577