Net Income Per Common Share (Schedule Of Earnings Per Share) (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net Income Per Common Share [Abstract]
Average common shares outstanding during the period for basic computation	262,099	254,769	262,026	254,667
Effect of dilutive securities:
Forward equity sale agreement		285		147
Employee stock-based compensation	459	387	519	454
Average common shares outstanding during the period for diluted computation	262,558	255,441	262,545	255,268