Earnings Per Share (Reconciliation Of Earnings Per Share Basic And Diluted) (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2015	Sep. 28, 2014	Sep. 27, 2015	Sep. 28, 2014
Numerator:
Net income	$ 140,347	$ 150,066	$ 710,011	$ 770,136
Denominator:
Denominator for basic earnings per share - weighted-average common shares	203,598	215,572	207,255	217,429
Effect of dilutive securities - employee stock compensation plan	982	1,321	1,027	1,409
Denominator for diluted earnings per share - adjusted weighted-average shares outstanding	204,580	216,893	208,282	218,838
Basic (in dollars per share)	$ 0.69	$ 0.70	$ 3.43	$ 3.54
Diluted (in dollars per share)	$ 0.69	$ 0.69	$ 3.41	$ 3.52