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Basis of Presentation (Narrative) (Details)	3 Months Ended
	Mar. 20, 2021 segment
Basis Of Presentation And Our Divisions [Line Items]
Number of Reportable Segments	7
United States and Canada [Member]
Basis Of Presentation And Our Divisions [Line Items]
Fiscal Period Duration	84 days

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Basis Of Presentation And Our Divisions

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Duration of a fiscal period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but not limited to, weeks in a year or quarter.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8672-108599

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