Basis of Presentation and Our Divisions (Schedule of Quarterly Reporting) (Details)	3 Months Ended	4 Months Ended
Sep. 05, 2020	Jun. 13, 2020	Mar. 21, 2020	Dec. 26, 2020
U.S. and Canada
Segment Reporting Information [Line Items]
Quarterly reporting calendar, period	84 days	84 days	84 days	112 days
International Divisions
Segment Reporting Information [Line Items]
Quarterly Financial Information, Reporting Calendar, Period	June, July and August	March, April and May	January, February	September, October, November and December

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.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration