Pension Plans And Other Post-Retirement Benefits (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Lump sum paid	$ 11,069	$ 10,889
Expected return on plan assets	5.60%
2022 expected contribution	$ 20,390
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected return on plan assets	5.60%	6.00%	6.50%
Fair value of plan assets	$ 433,121	$ 426,801	$ 266,461
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected return on plan assets	5.60%	6.00%
Fair value of plan assets	$ 107,308	$ 98,995	54,011
401(k) Savings Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Matching contribution, annual profit sharing compensation expense	19,569	15,445	$ 6,259
Aqua America Common Stock [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 20,290	$ 17,620
Percentage of plan assets	4.70%	4.10%