Earnings Per Share ("EPS") (Computation Of Basic And Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended
		Mar. 31, 2025	Mar. 31, 2024
Earnings Per Share [Abstract]
Net Income (Loss)		$ 52,992	$ 163,575
Preferred dividends		9,320	9,320
Net income available to common shareholders		$ 43,672	$ 154,255
Average shares used in basic computation		104,764	104,275
Dilutive effect of stock options and units	[1]	5,871	5,710
Average shares used in diluted computation		110,635	109,985
Basic		$ 0.42	$ 1.48
Diluted		$ 0.39	$ 1.4

[1] Diluted earnings per share is computed on the basis of the weighted-average number of shares of common stock plus the effect of dilutive potential common shares outstanding during the period using the treasury stock method. Diluted earnings per share include units.