Significant Accounting Policies (Schedule of Dividends) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 01, 2019	Mar. 02, 2019	Dec. 01, 2018	Sep. 01, 2018	Jun. 02, 2018	Mar. 03, 2018	Dec. 02, 2017	Sep. 02, 2017	Jun. 01, 2019	Jun. 02, 2018	Jun. 03, 2017
Dividends Payable [Line Items]
Net income (loss) attributable to Cal-Maine Foods, Inc.	$ (19,761)	$ 39,777	$ 21,807	$ 12,406	$ 71,767	$ 96,294	$ (26,136)	$ (15,993)	$ 54,229	$ 125,932	$ (74,278)
Cumulative losses to be recovered prior to payment of dividend at beginning of the period	0				(20,488)				0	(74,653)
Net income (loss) attributable to Cal-Maine Foods, Inc. available for dividend	(19,761)				$ 51,279				$ 54,229	$ 51,279
Percentage of net income loss used to compute accrued dividends									33.33%
1/3 of net income attributable to Cal-Maine Foods, Inc.	$ 0
Common stock, shares outstanding (in shares)	48,694								48,694
Dividends per common share (in dollars per share)	$ 0				$ 0.351				$ 0.506	$ 0.351
Common Stock
Dividends Payable [Line Items]
Common stock, shares outstanding (in shares)	43,894				43,831				43,894	43,831
Class A Convertible Common Stock
Dividends Payable [Line Items]
Common stock, shares outstanding (in shares)	4,800				4,800				4,800	4,800