Goodwill (Schedule Of Goodwill) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2023 USD ($)
Goodwill [Line Items]
Balance	$ 2,340,792
Reclassification to utility plant acquisition adjustment	(37)
Balance	2,340,755
Water [Member]
Goodwill [Line Items]
Balance	58,504
Reclassification to utility plant acquisition adjustment	(37)
Balance	58,467
Natural Gas [Member]
Goodwill [Line Items]
Balance	2,277,447
Balance	2,277,447
Other [Member]
Goodwill [Line Items]
Balance	4,841
Balance	$ 4,841