Consolidated Statements of Shareholders' Equity - Parenthetical - $ / shares			3 Months Ended
	Oct. 23, 2019	Oct. 22, 2019	Feb. 29, 2020	Nov. 30, 2019	Feb. 23, 2019	Nov. 24, 2018
Common Shares
Dividends declared (in dollars per share)	$ 0.25	$ 0.1125	$ 0.25	$ 0.25	$ 0.1125	$ 0.1125
Class B Common Stock
Dividends declared (in dollars per share)	$ 0.20	$ 0.09	$ 0.20	$ 0.20	$ 0.0900	$ 0.0900