Effect of Largest Customer on Sales (Detail)	4 Months Ended
Apr. 18, 2020	Apr. 20, 2019
Total year to date sales \| Wal-Mart/Sam's Club \| Customer Concentration Risk
Entity Wide Revenue Major Customer [Line Items]
Concentration risk percentage	21.40%	20.50%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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