Parent Company Condensed Statements of Cash Flows (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net cash provided by operating activities	$ 496,950	$ 394,171	$ 341,261
CASH FLOWS FROM INVESTING ACTIVITIES:
Net cash provided by investing activities	(27,854)	(88,257)	(83,738)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments of common stock dividends	(105,715)	(92,166)	(84,298)
Purchase of common stock	(699,007)	(591,212)	(1,064,253)
Other			(205)
Net cash used in financing activities	(222,792)	(322,803)	(197,145)
Change in cash and cash equivalents, restricted cash and cash equivalents	246,505	(17,427)	60,444
Cash and cash equivalents, beginning of period	25,438	35,768	42,815
Cash and cash equivalents, end of period	190,615	25,438	35,768
Parent Company [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net cash provided by operating activities	421,661	382,716	299,576
CASH FLOWS FROM INVESTING ACTIVITIES:
Dividends from subsidiaries	375,948	297,792	852,325
Net cash provided by investing activities	375,948	297,792	852,325
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments of common stock dividends	(105,715)	(92,166)	(84,298)
Purchase of common stock	(699,007)	(591,212)	(1,064,253)
Other	7,113	2,870	(3,350)
Net cash used in financing activities	(797,609)	(680,508)	(1,151,901)
Change in cash and cash equivalents, restricted cash and cash equivalents	0	0	0
Cash and cash equivalents, beginning of period	6	6	6
Cash and cash equivalents, end of period	$ 6	$ 6	$ 6