Net Income Per Common Share (Schedule Of Earnings Per Share) (Details) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Net Income Per Common Share [Abstract]
Average common shares outstanding during the period for basic computation	261,952	254,565
Effect of dilutive securities:
Forward equity sale agreement		3
Employee stock-based compensation	479	401
Average common shares outstanding during the period for diluted computation	262,431	254,969