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Acquisitions and Divestitures (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended			26 Months Ended	0 Months Ended	5 Months Ended	0 Months Ended								12 Months Ended
	May 31, 2014	Jun. 01, 2013	Jun. 02, 2012	May 31, 2014	Sep. 30, 2013 Dongguan Sun Hing Steel Furniture Factory LTD	Mar. 01, 2014 Dongguan Sun Hing Steel Furniture Factory LTD	Apr. 29, 2013 Maharam Fabric Corporation	Apr. 29, 2013 Maharam Fabric Corporation	Apr. 29, 2013 Maharam Fabric Corporation Trade Names	Apr. 29, 2013 Maharam Fabric Corporation Designs And Patterns	Apr. 29, 2013 Maharam Fabric Corporation Customer Relationships	Apr. 29, 2013 Maharam Fabric Corporation Non-compete Agreements	Apr. 02, 2012 Posh Office Systems LTD	May 31, 2014 Posh Office Systems LTD	May 31, 2014 Wholly-owned Contract Furniture Dealership dealerships	Jun. 01, 2013 Wholly-owned Contract Furniture Dealership dealerships	Jun. 02, 2012 Wholly-owned Contract Furniture Dealership dealerships	May 31, 2014 Wholly-owned Contract Furniture Dealership Oklahoma
Business Acquisition
Purchase price					$ 8.2		$ 155.8	$ 155.8					$ 58.9
Payments to Acquire Businesses, Gross						6.7							48.8
Business Acquisition, Percentage of Voting Interests Acquired								100.00%
Business Acquisition, Goodwill, Expected Tax Deductible Amount								20
Business Combination, Contingent Consideration, Liability													10.1	4.1
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	2.6
Payment contingent consideration	1.3	0.8	0	1.4
Acquired assets during period													15.8
Acquired liabilities during period								15.1					8.6
Deferred tax liability													4.9
Goodwill	228.2	227.0	146.4	228.2				80.7					34.5
Indefinite-lived intangible assets	0	23.0							23.0				19.9
Finite-lived intangible assets										3.1	16.0	0.3	8.9
Numbers of Business Divested															4	1	3
Gain (Loss) on sale of contract dealerships																		$ 1.3

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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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.

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