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Acquisitions and Divestitures Business Combinations results of Operations of Acquiree (Details) - USD ($) $ in Millions	3 Months Ended																			10 Months Ended	12 Months Ended
	May. 30, 2015	Feb. 28, 2015	[1]	Nov. 29, 2014	[1]	Aug. 30, 2014	[1]	May. 31, 2014	[1]	Mar. 01, 2014	[1]	Nov. 30, 2013	[1]	Aug. 31, 2013	[1]	Jun. 01, 2013	Mar. 02, 2013	Dec. 01, 2012	Sep. 01, 2012	May. 30, 2015	May. 30, 2015	May. 31, 2014	Jun. 01, 2013
Business Acquisition
Net sales	$ 550.7	$ 516.4		$ 565.4		$ 509.7		$ 487.5		$ 455.9		$ 470.5		$ 468.1		$ 460.0	$ 423.5	$ 441.8	$ 449.7		$ 2,142.2	$ 1,882.0	$ 1,774.9
Acquisition Of Design Within Reach (DWR) [Member]
Business Acquisition
Net sales																				$ 217.0
Net sales impact to Herman Miller, Inc.																				194.3
Intercompany Segment Eliminations [Member] | Acquisition Of Design Within Reach (DWR) [Member]
Business Acquisition
Revenues																				$ (22.7)
[1] The sum of the quarters does not equal the annual balance reflected in the Consolidated Statements of Comprehensive Income due to rounding associated with the calculations on an individual quarter basis.

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This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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