Stock Repurchases (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Number of shares
Repurchased at beginning of period	13,797,037	13,447,346	12,483,556
Repurchases		349,691	963,790
Repurchased at end of period	13,797,037	13,797,037	13,447,346
Aggregate Purchase Price
Repurchased at beginning balance	$ 840,664	$ 752,352	$ 607,750
Repurchases		88,312	144,602
Repurchased at end of period	$ 840,664	$ 840,664	$ 752,352