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Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions	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. 03, 2017	Mar. 04, 2017	Dec. 03, 2016	Sep. 03, 2016	Jun. 01, 2019	Jun. 02, 2018	Jun. 03, 2017
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 671.0	$ 619.0	$ 652.6	$ 624.6	$ 618.0	$ 578.4	$ 604.6	$ 580.3	$ 577.2	$ 524.9	$ 577.5	$ 598.6	$ 2,567.2	$ 2,381.2	$ 2,278.2
Gross margin	248.2	221.0	235.6	225.1	228.3	205.8	222.1	216.9	220.9	195.5	218.0	230.0	929.9	873.0	864.2
Net earnings attributable to Herman Miller, Inc.	$ 46.2	$ 39.2	$ 39.3	$ 35.8	$ 31.8	$ 29.8	$ 33.5	$ 33.1	$ 33.4	$ 22.5	$ 31.7	$ 36.3	$ 160.5	$ 128.1	$ 123.9
Earnings per share-basic	$ 0.78	$ 0.67	$ 0.66	$ 0.60	$ 0.53	$ 0.50	$ 0.56	$ 0.55	$ 0.56	$ 0.38	$ 0.53	$ 0.61	$ 2.72	$ 2.15	$ 2.07
Earnings per share-diluted	$ 0.78	$ 0.66	$ 0.66	$ 0.60	$ 0.53	$ 0.49	$ 0.55	$ 0.55	$ 0.55	$ 0.37	$ 0.53	$ 0.60	$ 2.70	$ 2.12	$ 2.05

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