Summary of Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	12 Months Ended
	Dec. 15, 2019	Dec. 31, 2020	Jan. 02, 2021	Dec. 28, 2019
Shares
Granted			0	0
Ms Winfrey
Shares
Beginning Balance			3,700,000
Granted	3,276,000		3,874,000
Exercised		(1,118,000)	(1,162,000)
Cancelled			(52,000)
Ending Balance			6,360,000	3,700,000
Exercisable at January 2, 2021			5,481,000
Weighted-Average Exercise Price
Beginning Balance			$ 21.77
Granted			35.96
Exercised			6.95
Cancelled			25.51
Ending Balance			33.09	$ 21.77
Exercisable at January 2, 2021			$ 33.63
Weighted-Average Remaining Contractual Life, Outstanding at January 2, 2021			4 years 10 months 24 days
Weighted-Average Remaining Contractual Life, Exercisable at January 2, 2021			4 years 7 months 6 days
Aggregate Intrinsic Value, Outstanding at January 2, 2021			$ 22,386
Aggregate Intrinsic Value, Exercisable at January 2, 2021			$ 20,016