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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
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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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- Definition 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). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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