Earnings Per Share (Reconciliation Of The Numerators And The Denominators Of The Basic And Diluted Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share [Abstract]
Income available to common shareholders, basic	$ 206,129	$ 172,252
Income available to common shareholders including assumed conversions, diluted	$ 206,129	$ 172,252
Basic weighted average shares outstanding	293,412	304,731
Stock options and non-vested shares, incremental shares	2,924	3,300
Diluted weighted average shares outstanding	296,336	308,031
Basic earnings per share	$ 0.70	$ 0.57
Diluted earnings per share	$ 0.70	$ 0.56