Accrued Dividends Payable And Dividends per Common Share (Schedule of Dividends) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Aug. 27, 2022	Aug. 28, 2021
Class of Stock [Line Items]
Net income (loss) attributable to Cal-Maine Foods, Inc.	$ 125,287	$ (18,026)
Cumulative losses to be recovered prior to payment of divided at beginning of period	0	(4,244)
Net income available for dividend	125,287	0
1/3 of net income attributable to Cal-Maine Foods, Inc. available for dividend	$ 41,762	$ 0
Common stock outstanding (shares)	48,936	48,857
Dividends per common share (in dollars per share)	$ 0.853	$ 0
Percentage of net income loss used to compute accrued dividends	33.33%
Common Stock [Member]
Class of Stock [Line Items]
Common stock outstanding (shares)	44,136	44,057
Class A Common Stock [Member]
Class of Stock [Line Items]
Common stock outstanding (shares)	4,800	4,800