Pension Plans And Other Post-Retirement Benefits (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Lump sum paid	$ 30,347	$ 17,757
Expected return on plan assets	6.80%
2024 expected contribution	$ 9,393
Matching contribution, annual profit sharing compensation expense	23,519	$ 21,758	$ 19,569
Settlement loss recorded as regulatory asset	$ 5,173
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected return on plan assets	6.80%	5.40%	5.60%
Fair value of plan assets	$ 312,303	$ 333,176	$ 433,121
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	95,005	85,994	$ 107,308
Aqua America Common Stock [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 14,115	$ 18,037
Percentage of plan assets	4.50%	5.40%