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Acquisitions and Divestitures (Details) - USD ($) $ in Millions |  |  | 4 Months Ended | 10 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Sep. 17, 2015 | Jul. 28, 2014 | Nov. 29, 2014 | May 30, 2015 | May 28, 2016 | May 30, 2015 | May 31, 2014
Business Acquisition |  |  |  |  |  |  |
Goodwill |  |  |  | $ 303.1 | $ 305.3 | $ 303.1 | $ 228.2
Nelson Bubble Lamp Product Line [Member] |  |  |  |  |  |  |
Business Acquisition |  |  |  |  |  |  |
Purchase Price | $ 3.6 |  |  |  |  |  |
Contingent consideration | 2.7 |  |  |  |  |  |
Acquisition Of Design Within Reach (DWR) [Member] |  |  |  |  |  |  |
Business Acquisition |  |  |  |  |  |  |
Purchase Price |  | $ 155.2 |  | 155.2 |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  | 81.00% |  |  |  |  |
Goodwill |  | $ 75.6 |  |  |  |  |
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests, Percent |  |  | 4.00% |  |  |  |
Purchase of noncontrolling interests |  |  | $ 5.8 |  |  |  |
Business Acquisition, Transaction Costs |  |  |  |  |  | 2.2 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill |  | $ 68.5 |  |  |  |  |
Herman Miller Consumer Holdings Inc [Member] | Acquisition Of Design Within Reach (DWR) [Member] |  |  |  |  |  |  |
Business Acquisition |  |  |  |  |  |  |
Capital Contributed Percentage of Acquiree |  | 15.00% |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners |  | 7.00% |  |  |  |  |
Noncontrolling Interest, Put Option Purchase Period from Date of Issuance |  | 5 years |  |  |  |  |
Contract-Based Intangible Assets [Member] | Nelson Bubble Lamp Product Line [Member] |  |  |  |  |  |  |
Business Acquisition |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | $ 2.5 |  |  |  |  |  |
Useful Life | 10 years |  |  |  |  |  |
Customer Relationships |  |  |  |  |  |  |
Business Acquisition |  |  |  |  |  |  |
Useful Life |  |  |  |  | 10 years |  |
Customer Relationships | Nelson Bubble Lamp Product Line [Member] |  |  |  |  |  |  |
Business Acquisition |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | $ 0.6 |  |  |  |  |  |
Useful Life | 10 years |  |  |  |  |  |
Customer Relationships | Acquisition Of Design Within Reach (DWR) [Member] |  |  |  |  |  |  |
Business Acquisition |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles |  | $ 12.0 |  |  |  |  |
Customer Relationships | Minimum | Acquisition Of Design Within Reach (DWR) [Member] |  |  |  |  |  |  |
Business Acquisition |  |  |  |  |  |  |
Useful Life |  | 10 years |  |  |  |  |
Customer Relationships | Maximum | Acquisition Of Design Within Reach (DWR) [Member] |  |  |  |  |  |  |
Business Acquisition |  |  |  |  |  |  |
Useful Life |  | 16 years |  |  |  |  |
Consumer |  |  |  |  |  |  |
Business Acquisition |  |  |  |  |  |  |
Goodwill |  |  |  | $ 75.6 | $ 78.8 | $ 75.6 | $ 0.0
Consumer | Nelson Bubble Lamp Product Line [Member] |  |  |  |  |  |  |
Business Acquisition |  |  |  |  |  |  |
Goodwill | $ 3.2 |  |  |  |  |  |

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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463 + Details
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