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		6 Months Ended
		Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Earnings Per Share [Abstract]
Net income		$ 155,055	$ 165,294	$ 208,047	$ 328,869
Preferred dividends		9,321	9,321	18,641	18,641
Net income available to common shareholders		$ 145,734	$ 155,973	$ 189,406	$ 310,228
Average shares used in basic computation		103,349	104,150	104,049	104,217
Dilutive effect of stock options and units	[1]	5,498	6,135	5,742	5,939
Average shares used in diluted computation		108,847	110,285	109,791	110,156
Basic		$ 1.41	$ 1.5	$ 1.82	$ 2.98
Diluted		$ 1.34	$ 1.41	$ 1.73	$ 2.82

[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.