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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 27, 2018	Dec. 28, 2017	Dec. 29, 2016
Common Class B [Member]
Common Stock, Dividends, Per Share, Cash Paid	$ 0.55	$ 0.45	$ 0.41
Common Stock [Member]
Common Stock, Dividends, Per Share, Cash Paid	$ 0.60	$ 0.50	$ 0.45

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- Definition

Aggregate dividends paid during the period for each share of common stock outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

+ Details

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X

- Details

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Namespace Prefix:
Data Type:	na
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- Details

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