Earnings Per Share (Reconciliation Of Earnings Per Share Basic And Diluted) (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2018	Jun. 25, 2017	Jul. 01, 2018	Jun. 25, 2017
Numerator:
Net income used in computing basic and diluted earnings per share	$ 242,338	$ 258,867	$ 417,101	$ 445,236
Denominator:
Denominator for basic earnings per share - weighted-average common shares (in shares)	166,589	174,409	167,364	175,178
Effect of dilutive securities - employee stock compensation plan (in shares)	615	915	825	992
Denominator for diluted earnings per share - adjusted weighted-average shares outstanding (in shares)	167,204	175,324	168,189	176,170
Basic (in dollars per share)	$ 1.45	$ 1.48	$ 2.49	$ 2.54
Diluted (in dollars per share)	$ 1.45	$ 1.48	$ 2.48	$ 2.53