Consolidated Statements of Shareholders' Equity - Parenthetical - $ / shares			3 Months Ended
Mar. 28, 2018	Mar. 27, 2018	May 25, 2019	Feb. 23, 2019	Nov. 24, 2018	May 26, 2018	Feb. 24, 2018	Nov. 25, 2017
Common Shares
Dividends declared (in dollars per share)	$ 0.1125	$ 0.0375	$ 0.1125	$ 0.1125	$ 0.1125	$ 0.1125	$ 0.0375	$ 0.0375
Class B Common Stock
Dividends declared (in dollars per share)	$ 0.09	$ 0.03	$ 0.0900	$ 0.0900	$ 0.0900	$ 0.0900	$ 0.0300	$ 0.0300

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

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

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration