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								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 31, 2020	Dec. 28, 2019	Dec. 29, 2018
Earnings Per Share [Abstract]
Income available to common shareholders, basic									$ 780,088	$ 529,454	$ 630,059
Income available to common shareholders including assumed conversions, diluted									$ 780,088	$ 529,454	$ 630,059
Basic weighted average shares outstanding									306,669	318,229	330,084
Stock options, non-vested shares and share units									2,467	3,006	3,488
Diluted weighted average shares outstanding									309,136	321,235	333,572
Basic earnings per share	$ 0.46	$ 1.17	$ 0.44	$ 0.48	$ 0.49	$ 0.26	$ 0.40	$ 0.51	$ 2.54	$ 1.66	$ 1.91
Diluted earnings per share	$ 0.46	$ 1.16	$ 0.44	$ 0.47	$ 0.49	$ 0.26	$ 0.39	$ 0.51	$ 2.52	$ 1.65	$ 1.89