Quarterly Financial Data (Schedule of Quarterly Financial Data) (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended								12 Months Ended
	Apr. 04, 2018	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
Quarterly Financial Information Disclosure [Abstract]
Net sales		$ 280,572	$ 383,993	$ 356,040	$ 340,583	$ 443,095	$ 435,820	$ 361,172	$ 262,845	$ 1,361,188	$ 1,502,932	$ 1,074,513
Gross profit		12,755	82,441	70,535	57,128	141,216	120,098	82,396	17,336	222,859	361,046	45,550
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)
Net income (loss) per share:
Basic (in dollars per share)		$ (0.41)	$ 0.82	$ 0.45	$ 0.26	$ 1.48	$ 1.99	$ (0.54)	$ (0.33)	$ 1.12	$ 2.60	$ (1.54)
Diluted (in dollars per share)		$ (0.41)	$ 0.82	$ 0.45	$ 0.26	$ 1.48	$ 1.99	$ (0.54)	$ (0.33)	$ 1.12	$ 2.60	$ (1.54)
Amount of settlement	$ 80,800			$ 2,300				$ 80,800
Tax benefit recorded from tax reform, provisional							$ 35,000
Tax benefit recorded from tax reform						$ 8,000					$ 43,000