Fair Value of Financial Instruments - Additional Information (Detail) - Distributor	6 Months Ended	12 Months Ended
	Jul. 11, 2020	Dec. 28, 2019
Fair Value Disclosures [Line Items]
Number of independent distributors	4,110	4,200
Percentage of down payment on distribution rights purchased	5.00%
3.5% Senior Notes Due 2026
Fair Value Disclosures [Line Items]
Derivative, fixed interest rate	3.50%
Senior notes due year	2026
4.375% Senior Notes Due 2022
Fair Value Disclosures [Line Items]
Derivative, fixed interest rate	4.375%
Senior notes due year	2022
Maximum
Fair Value Disclosures [Line Items]
Financing period of distribution rights, years	10 years