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Acquisitions and Divestitures (Details) - Range [Domain] $ in Millions |  |  | 4 Months Ended | 9 Months Ended | 10 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Jul. 28, 2014 USD ($) | Sep. 30, 2013 USD ($) | Nov. 29, 2014 USD ($) | May. 30, 2015 USD ($) | May. 30, 2015 USD ($) | May. 30, 2015 USD ($) | May. 31, 2014 USD ($) dealerships | Jun. 01, 2013 USD ($)
Business Acquisition |  |  |  |  |  |  |  |
Long-term Line of Credit | $ 127.0 |  |  |  |  |  |  |
Goodwill |  |  |  | $ 303.1 | $ 303.1 | $ 303.1 | $ 228.2 | $ 227.0
Indefinite-lived intangible assets |  |  |  |  |  | 55.1 | $ 0.0 |
Goodwill, Purchase Accounting Adjustments |  |  |  | 1.2 |  |  |  |
Wholly-owned Contract Furniture Dealership |  |  |  |  |  |  |  |
Business Acquisition |  |  |  |  |  |  |  |
Numbers of Business Divested | dealerships |  |  |  |  |  |  | 4 |
Wholly-owned Contract Furniture Dealership | Oklahoma |  |  |  |  |  |  |  |
Business Acquisition |  |  |  |  |  |  |  |
Gain (Loss) on sale of contract dealerships |  |  |  |  |  |  | $ 1.3 |
Acquisition Of Design Within Reach (DWR) [Member] |  |  |  |  |  |  |  |
Business Acquisition |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill |  |  |  | 68.5 | 68.5 | 68.5 |  |
Business Acquisition, Transaction Costs |  |  |  |  |  | 2.2 |  |
Purchase Price |  |  |  |  | 155.2 |  |  |
Business Acquisition, Percentage of Voting Interests Acquired | 81.00% |  |  |  |  |  |  |
Business Acquisition, Goodwill, Expected Tax Deductible Amount | $ 10.0 |  |  |  |  |  |  |
Goodwill |  |  |  | $ 75.6 | $ 75.6 | 75.6 |  |
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests, Percent |  |  | 4.00% |  |  |  |  |
Purchase of noncontrolling interests |  |  | $ 5.8 |  |  |  |  |
Acquisition Of Design Within Reach (DWR) [Member] | Redeemable Noncontrolling Interest [Member] |  |  |  |  |  |  |  |
Business Acquisition |  |  |  |  |  |  |  |
Fair value of fully-vested options granted | $ 1.7 |  |  |  |  |  |  |
Dongguan Sun Hing Steel Furniture Factory LTD |  |  |  |  |  |  |  |
Business Acquisition |  |  |  |  |  |  |  |
Purchase Price |  | $ 8.2 |  |  |  | $ 1.5 | $ 6.7 |
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% |  |  |  |  |  |  |

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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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- Definition The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e1043-128460 + Details
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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 + Details
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- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472 + Details
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- Definition Gain (loss) from sale or disposal of an organization or integrated set of activities (for example, but not limited to, a partnership or corporation) engaged in providing a product or service in a commercial, industrial, or professional environment. + References No definition available. + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 + Details
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