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		9 Months Ended
	Sep. 30, 2020	Sep. 28, 2019	Sep. 30, 2020	Sep. 28, 2019
Earnings Per Share [Abstract]
Income available to common shareholders, basic	$ 356,676	$ 81,935	$ 638,583	$ 375,123
Income available to common shareholders including assumed conversions, diluted	$ 356,676	$ 81,935	$ 638,583	$ 375,123
Basic weighted average shares outstanding	305,759	315,876	306,759	320,282
Stock options and non-vested shares, incremental shares	2,607	3,237	2,365	3,079
Diluted weighted average shares outstanding	308,366	319,113	309,124	323,361
Basic earnings per share	$ 1.17	$ 0.26	$ 2.08	$ 1.17
Diluted earnings per share	$ 1.16	$ 0.26	$ 2.07	$ 1.16