Accrued Dividends Payable and Dividends per Common Share (Narrative) (Details)	3 Months Ended
	Feb. 27, 2021 $ / shares
Accrued Dividends Payable and Dividends per Common Share [Abstract]
Dividends per common share	$ 0.034	[1]

[1] Dividends per common share   = 1/3 of Net   income (loss) attributable to   Cal-Maine Foods, Inc. available   for dividend ÷ Total   common stock outstanding (shares).