Significant Accounting Policies (Schedule of Dividends) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 02, 2018	Mar. 03, 2018	Dec. 02, 2017	Sep. 02, 2017	Jun. 03, 2017	Feb. 25, 2017	Nov. 26, 2016	Aug. 27, 2016	Jun. 02, 2018	Jun. 03, 2017	May 28, 2016
Dividends Payable [Line Items]
Net income (loss) attributable to Cal-Maine Foods, Inc.	$ 71,767	$ 96,294	$ (26,136)	$ (15,993)	$ (24,471)	$ 4,139	$ (23,010)	$ (30,936)	$ 125,932	$ (74,278)	$ 316,041
Cumulative losses to be recovered prior to payment of dividend at beginning of the period	(20,488)				(50,182)				(74,653)	(375)
Net income (loss) attributable to Cal-Maine Foods, Inc. available for dividend	51,279				$ (74,653)				$ 51,279	$ (74,653)
Percentage of net income loss used to compute accrued dividends									33.33%
1/3 of net income attributable to Cal-Maine Foods, Inc.	$ 17,093
Common stock, shares outstanding (in shares)	48,631								48,631
Dividends per common share (in dollars per share)	$ 0.351				$ 0				$ 351	$ 0
Common Stock
Dividends Payable [Line Items]
Common stock, shares outstanding (in shares)	43,831				43,777				43,831	43,777
Class A Convertible Common Stock
Dividends Payable [Line Items]
Common stock, shares outstanding (in shares)	4,800				4,800				4,800	4,800