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Performance Contingent ROIC Shares (Detail) - Return On Invested Capital - 2019 Award - Omnibus Plan - $ / shares shares in Thousands				3 Months Ended		4 Months Ended	12 Months Ended
	Oct. 06, 2019	Jul. 14, 2019	May 23, 2019	Oct. 03, 2020	Jul. 11, 2020	Apr. 18, 2020	Dec. 28, 2019	Dec. 29, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Granted	2	5	11	5	2	8	331	440
Vesting Date	Mar. 01, 2022	Mar. 01, 2022	Mar. 01, 2022	Feb. 28, 2023	Feb. 28, 2023	Feb. 28, 2023	Feb. 28, 2023	Mar. 01, 2022
Fair Value per Share	$ 22.52	$ 23.32	$ 23.08	$ 24.63	$ 21.97	$ 23.14	$ 21.74	$ 18.29

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- Definition

Share based compensation arrangement by share based payment award vesting date.

+ References

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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