MillerKnoll (MLKN) 10-Q 4 Jan 21 2021 Q2 Quarterly report Financial data

Cover Page

Cover Page - shares	6 Months Ended
	Nov. 28, 2020	Dec. 31, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Nov. 28, 2020
Document Transition Report	false
Entity File Number	001-15141
Entity Registrant Name	HERMAN MILLER, INC.
Entity Incorporation, State or Country Code	MI
Entity Tax Identification Number	38-0837640
Entity Address, Address Line One	855 East Main Avenue
Entity Address, City or Town	Zeeland
Entity Address, State or Province	MI
Entity Address, Postal Zip Code	49464
City Area Code	616
Local Phone Number	654-3000
Title of 12(b) Security	Common Stock
Trading Symbol	MLHR
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		58,978,540
Entity Central Index Key	0000066382
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--05-29

Condensed Consolidated Statemen

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 28, 2020	Nov. 30, 2019	Nov. 28, 2020	Nov. 30, 2019
Income Statement [Abstract]
Net sales	$ 626.3	$ 674.2	$ 1,253	$ 1,345.2
Cost of sales	382.1	418.7	758.8	843.6
Gross margin	244.2	255.5	494.2	501.6
Operating expenses:
Selling, general and administrative	153	169.5	292.8	334.3
Restructuring expense, net	2.4	4.2	1.2	6.1
Design and research	17.8	19.4	33.8	38.6
Total operating expenses	173.2	193.1	327.8	379
Operating earnings	71	62.4	166.4	122.6
Gain on consolidation of equity method investment	0	30.5	0	30.5
Interest expense	3.5	3	7.2	6
Interest and other investment income	0.4	0.7	0.8	1.4
Other (income) expense, net	(0.9)	0.3	(2.7)	0.1
Earnings before income taxes and equity income	68.8	90.3	162.7	148.4
Income tax expense	16.2	12.9	36.9	25.2
Equity income from nonconsolidated affiliates, net of tax	0.2	1.2	0.4	3.4
Net earnings	52.8	78.6	126.2	126.6
Net income attributable to redeemable noncontrolling interests	1.5	0	2	(0.2)
Net earnings attributable to Herman Miller, Inc.	$ 51.3	$ 78.6	$ 124.2	$ 126.8
Earnings per share — basic	$ 0.87	$ 1.33	$ 2.11	$ 2.15
Earnings per share — diluted	$ 0.87	$ 1.32	$ 2.10	$ 2.14
Other comprehensive income (loss), net of tax
Foreign currency translation adjustments	$ 4.9	$ 13.7	$ 35.1	$ 4.4
Pension and post-retirement liability adjustments	1.4	0.7	2.5	1.4
Unrealized gains (losses) on interest rate swap agreement	0.9	3.4	1.2	(5.3)
Unrealized holding loss on available for sale securities	0	0		0
Other comprehensive income, net of tax	7.2	17.8	38.7	0.5
Comprehensive income	60	96.4	164.9	127.1
Comprehensive income (loss) attributable to redeemable noncontrolling interests	1.7	0	4.8	(0.2)
Comprehensive income attributable to Herman Miller, Inc.	$ 58.3	$ 96.4	$ 160.1	$ 127.3

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Nov. 28, 2020	May 30, 2020
Current Assets:
Cash and cash equivalents	$ 377.9	$ 454
Short-term investments	7.2	7
Accounts receivable, allowance	5.2	4.7
Accounts receivable, net	193	180
Unbilled accounts receivable	33	19.5
Inventories, net	191	197.3
Prepaid expenses	26.8	43.3
Other current assets	9	16
Total current assets	837.9	917.1
Property and equipment, at cost	1,124	1,111.3
Less — accumulated depreciation	(798.1)	(780.5)
Net property and equipment	325.9	330.8
Right-of-use assets	225.6	193.9
Goodwill	358.5	346
Indefinite-lived intangibles	96.4	92.8
Other amortizable intangibles, accumulated amortization	70.7	62.7
Other amortizable intangibles, net	112.3	112.4
Other noncurrent assets	71.9	60.9
Total Assets	2,028.5	2,053.9
Current Liabilities:
Accounts payable	164.4	128.8
Short-term borrowings and current portion of long-term debt	52.3	51.4
Accrued compensation and benefits	65.7	71.1
Accrued warranty	16	16.1
Customer deposits	37.7	39.8
Other accrued liabilities	171.4	163
Total current liabilities	507.5	470.2
Long-term debt	274.9	539.9
Pension and post-retirement benefits	41.5	42.4
Lease liabilities	205.7	178.8
Other liabilities	144.1	129.2
Total Liabilities	1,173.7	$ 1,360.5
Redeemable noncontrolling interests	$ 56.5
Stockholders' Equity:
Preferred stock, par value	$ 0	$ 0
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock	$ 0	$ 0
Common stock, par value	$ 0.20	$ 0.20
Common stock, shares authorized	240,000,000	240,000,000
Common stock, shares issued and outstanding	58,971,641
Common stock	$ 11.8	$ 11.8
Additional paid-in capital	87.8	81.6
Retained earnings	797.1	683.9
Accumulated other comprehensive loss	(98.1)	(134)
Deferred compensation plan	(0.3)	(0.3)
Total Stockholders' Equity	798.3	643
Total Liabilities, Redeemable Noncontrolling Interests, and Stockholders' Equity	$ 2,028.5	$ 2,053.9

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Nov. 28, 2020	Nov. 30, 2019
Cash Flows from Operating Activities:
Net earnings	$ 126.2	$ 126.6
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	43.3	37.9
Stock-based compensation	3.9	5.4
Gain on consolidation of equity method investment	0	(30.5)
Restructuring expense	1.2	6.1
Decrease in current assets	2.3	16.5
Increase (decrease) in current liabilities	22.9	(21.1)
Increase in non-current liabilities	9	0.2
Other, net	5.8	1.3
Net Cash Provided by Operating Activities	214.6	142.4
Cash Flows from Investing Activities:
Proceeds from sale of property and dealers	11.4	0.2
Capital expenditures	(24.4)	(38.6)
Acquisitions, net of cash received	0	(40)
Other, net	(11.4)	(3.7)
Net Cash Used in Investing Activities	(24.4)	(82.1)
Cash Flows from Financing Activities:
Repayments of credit facility	(265)	0
Dividends paid	(12.3)	(24)
Common stock issued	3.1	13.3
Common stock repurchased and retired	(0.9)	(8.1)
Purchase of redeemable noncontrolling interests	0	(20.3)
Other, net	(1.8)	(1.5)
Net Cash Used in Financing Activities	(276.9)	(40.6)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	10.6	(1.9)
Net (Decrease) Increase in Cash and Cash Equivalents	(76.1)	17.8
Cash and Cash Equivalents, Beginning of Period	454	159.2
Cash and Cash Equivalents, End of Period	$ 377.9	$ 177

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Deferred Compensation Plan	Herman Miller, Inc. Stockholders' Equity	Noncontrolling Interests
Balance at beginning of period (in shares) at Jun. 01, 2019		58,794,148
Balance at beginning of period at Jun. 01, 2019	$ 719.2	$ 11.7	$ 89.8	$ 712.7	$ (94.2)	$ (0.8)	$ 719.2	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings attributable to Herman Miller, Inc.				48.2			48.2	(0.2)
Net earnings, including portion attributable to nonredeemable noncontrolling interests	48
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(17.3)				(17.3)		(17.3)
Stock-based compensation expense	2.6		2.6				2.6
Exercise of stock options (in shares)		382,898
Exercise of stock options	12.2	$ 0.1	12.1				12.2
Restricted and performance stock units released (in shares)		45,105
Restricted and performance stock units released	0	$ 0					0
Employee stock purchase plan issuances (in shares)		14,750
Employee stock purchase plan issuances	(0.5)		(0.5)				(0.5)
Repurchase and retirement of common stock (in shares)		(173,001)
Repurchase and retirement of common stock	$ (7.6)	$ 0	(7.6)				(7.6)
Dividends declared per share	$ 0.21
Dividends declared	$ (12.5)			(12.5)			(12.5)
Deferred compensation plan	0.2					0.2	0.2
Redemption value adjustment				(0.2)			(0.2)	0.2
Balance at end of period (in shares) at Aug. 31, 2019		59,063,900
Balance at end of period at Aug. 31, 2019	745.3	$ 11.8	97.4	748.2	(111.5)	(0.6)	745.3	0
Balance at beginning of period (in shares) at Jun. 01, 2019		58,794,148
Balance at beginning of period at Jun. 01, 2019	719.2	$ 11.7	89.8	712.7	(94.2)	(0.8)	719.2	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings attributable to Herman Miller, Inc.	126.8
Balance at end of period (in shares) at Nov. 30, 2019		59,075,241
Balance at end of period at Nov. 30, 2019	844.6	$ 11.8	100.4	826.7	(93.7)	(0.6)	844.6	0
Balance at beginning of period (in shares) at Aug. 31, 2019		59,063,900
Balance at beginning of period at Aug. 31, 2019	745.3	$ 11.8	97.4	748.2	(111.5)	(0.6)	745.3	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings attributable to Herman Miller, Inc.	78.6			78.6			78.6
Net earnings, including portion attributable to nonredeemable noncontrolling interests	78.6
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	17.8				17.8		17.8
Stock-based compensation expense	2.8		2.8				2.8
Exercise of stock options (in shares)		5,227
Exercise of stock options	0.1	$ 0	0.1				0.1
Restricted and performance stock units released (in shares)		3,653
Restricted and performance stock units released	0	$ 0					0
Employee stock purchase plan issuances (in shares)		12,467
Employee stock purchase plan issuances	(0.5)		(0.5)				(0.5)
Repurchase and retirement of common stock (in shares)		(10,006)
Repurchase and retirement of common stock	$ (0.4)	$ 0	(0.4)				(0.4)
Dividends declared per share	$ 0.21
Dividends declared	$ (0.1)			(0.1)			(0.1)
Balance at end of period (in shares) at Nov. 30, 2019		59,075,241
Balance at end of period at Nov. 30, 2019	844.6	$ 11.8	100.4	826.7	(93.7)	(0.6)	844.6	0
Balance at beginning of period (in shares) at May. 30, 2020		58,793,275
Balance at beginning of period at May. 30, 2020	643	$ 11.8	81.6	683.9	(134)	(0.3)	643	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings attributable to Herman Miller, Inc.				73			73
Net earnings, including portion attributable to nonredeemable noncontrolling interests	73							0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	28.9				28.9		28.9
Stock-based compensation expense	1.5		1.5				1.5
Exercise of stock options (in shares)		8,133
Exercise of stock options	0.2	$ 0	0.2				0.2
Restricted and performance stock units released (in shares)		106,607
Restricted and performance stock units released	0	$ 0					0
Employee stock purchase plan issuances (in shares)		25,116
Employee stock purchase plan issuances	(0.6)		(0.6)				(0.6)
Repurchase and retirement of common stock (in shares)		(36,644)
Repurchase and retirement of common stock	(0.9)	$ 0	(0.9)				(0.9)
Directors' fees (shares)		(3,013)
Directors' fees	0.1		0.1				0.1
Balance at end of period (in shares) at Aug. 29, 2020		58,899,500
Balance at end of period at Aug. 29, 2020	746.4	$ 11.8	83.1	756.9	(105.1)	(0.3)	746.4	0
Balance at beginning of period (in shares) at May. 30, 2020		58,793,275
Balance at beginning of period at May. 30, 2020	643	$ 11.8	81.6	683.9	(134)	(0.3)	643	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings attributable to Herman Miller, Inc.	$ 124.2
Balance at end of period (in shares) at Nov. 28, 2020	58,971,641	58,971,641
Balance at end of period at Nov. 28, 2020	$ 798.3	$ 11.8	87.8	797.1	(98.1)	(0.3)	798.3	0
Balance at beginning of period (in shares) at Aug. 29, 2020		58,899,500
Balance at beginning of period at Aug. 29, 2020	746.4	$ 11.8	83.1	756.9	(105.1)	(0.3)	746.4	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings attributable to Herman Miller, Inc.	51.3			51.3			51.3
Net earnings, including portion attributable to nonredeemable noncontrolling interests	51.3
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	7				7		7
Stock-based compensation expense	2.4		2.4				2.4
Exercise of stock options (in shares)		54,771
Exercise of stock options	1.9	$ 0	1.9				1.9
Restricted and performance stock units released (in shares)		3,688
Restricted and performance stock units released	0	$ 0					0
Employee stock purchase plan issuances (in shares)		14,880
Employee stock purchase plan issuances	(0.4)		(0.4)				(0.4)
Repurchase and retirement of common stock (in shares)		(1,198)
Repurchase and retirement of common stock	$ 0	$ 0	0				0
Dividends declared per share	$ 0.1875
Dividends declared	$ (11.1)			(11.1)			(11.1)
Balance at end of period (in shares) at Nov. 28, 2020	58,971,641	58,971,641
Balance at end of period at Nov. 28, 2020	$ 798.3	$ 11.8	$ 87.8	$ 797.1	$ (98.1)	$ (0.3)	$ 798.3	$ 0

Basis of Presentation

Basis of Presentation	6 Months Ended
	Nov. 28, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis Of Presentation	Basis of Presentation The Condensed Consolidated Financial Statements have been prepared by Herman Miller, Inc. (“the Company”) in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP") for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. Management believes the disclosures made in this document are adequate with respect to interim reporting requirements. Unless otherwise noted or indicated by the context, all references to "Herman Miller," "we," "our," "Company" and similar references are to Herman Miller, Inc., its predecessors, and controlled subsidiaries. The accompanying unaudited Condensed Consolidated Financial Statements, taken as a whole, contain all adjustments that are of a normal recurring nature necessary to present fairly the financial position of the Company as of November 28, 2020. Operating results for the three and six months ended November 28, 2020 are not necessarily indicative of the results that may be expected for the year ending May 29, 2021. It is suggested that these Condensed Consolidated Financial Statements be read in conjunction with the financial statements and notes thereto included in the Company's Annual Report on Form 10-K for the year ended May 30, 2020. All intercompany transactions have been eliminated in the Condensed Consolidated Financial Statements. The financial statements of equity method investments are not consolidated. Certain prior year amounts in the Condensed Consolidated Financial Statements have been reclassified to conform with current year presentation.

Recently Issued Accounting Stan

Recently Issued Accounting Standards	6 Months Ended
	Nov. 28, 2020
Accounting Standards Update and Change in Accounting Principle [Abstract]
Recently Issued Accounting Standards	Recently Issued Accounting Standards Recently Adopted Accounting Standards On May 31, 2020, the Company adopted Accounting Standards Update ("ASU") No. 2016-13, "Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments" using the modified retrospective method. This update replaces the existing incurred loss impairment model with an expected loss model and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates including customer credit quality, historical write-off trends and general information regarding industry trends and the macroeconomic environment. The adoption did not have a material impact on the Company's financial statements, accounting policies or methods utilized to determine the allowance for doubtful accounts. On May 31, 2020, the Company adopted ASU No. 2018-13, "Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement" using the prospective method. This update modifies certain disclosure requirements for fair value measurements. The adoption did not have a material impact on the Company's financial statements. Recently Issued Accounting Standards Not Yet Adopted The Company is currently evaluating the impact of adopting the following relevant standards issued by the FASB: Standard Description Effective Date 2018-14 Compensation - Retirement Benefits - Defined Benefit Plans - General (Subtopic 715-20): Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans This update eliminates, adds and clarifies certain disclosure requirements for employers that sponsor defined benefit pension or other post-retirement plans. Early adoption is permitted. The Company does not expect the adoption of this standard to have a material impact on its financial statements. May 30, 2021 All other issued and not yet effective accounting standards are not relevant to the Company.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	6 Months Ended
	Nov. 28, 2020
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customer	Revenue from Contracts with Customers Disaggregated Revenue Revenue disaggregated by contract type has been provided in the table below: Three Months Ended Six Months Ended (In millions) November 28, 2020 November 30, 2019 November 28, 2020 November 30, 2019 Net Sales: Single performance obligation Product revenue $ 544.3 $ 572.7 $ 1,087.6 $ 1,138.9 Multiple performance obligations Product revenue 77.2 95.8 155.7 195.7 Service revenue 2.9 2.9 6.0 5.2 Other 1.9 2.8 3.7 5.4 Total $ 626.3 $ 674.2 $ 1,253.0 $ 1,345.2 Effective in the first quarter of fiscal 2021, the Company has revised its product categories in the table below to consist of Workplace, Performance Seating, Lifestyle and Other. The change in these product categories reflects how the Company internally reports and evaluates products when making operational decisions. Prior year results disclosed in the table below have been revised to reflect these changes. The Workplace category includes products centered on creating highly functional and productive settings for both groups and individuals. This category focuses on the development of products, beyond seating, that define boundaries, support work and enable productivity. The Performance Seating category includes products centered on seating ergonomics, productivity and function across an evolving and diverse range of settings. This category focuses on the development of ergonomic seating solutions for specific use cases requiring more than basic utility. The Lifestyle category includes products focused on bringing spaces to life through beautiful yet functional products. This category focuses on the development of products that support a way of living, in thoughtful yet elevated ways. The products in this category help create emotive and visually appealing spaces via a portfolio that offers diversity in aesthetics, price and performance. Revenue disaggregated by product type and reportable segment has been provided in the table below: Three Months Ended Six Months Ended (In millions) November 28, 2020 November 30, 2019 November 28, 2020 November 30, 2019 North America Contract: Workplace $ 197.2 $ 277.3 $ 404.3 $ 560.8 Performance Seating 74.7 108.6 152.2 220.5 Lifestyle 20.4 24.5 42.8 48.0 Other 30.8 40.2 62.6 80.0 Total North America Contract $ 323.1 $ 450.6 $ 661.9 $ 909.3 International Contract: Workplace $ 35.1 $ 45.3 $ 77.0 $ 92.8 Performance Seating 73.4 61.5 136.3 118.8 Lifestyle 57.1 7.4 103.5 13.4 Other 2.5 4.0 4.9 7.0 Total International Contract $ 168.1 $ 118.2 $ 321.7 $ 232.0 Retail: Workplace $ 2.0 $ 1.1 $ 4.0 $ 2.1 Performance Seating 49.2 12.6 96.6 21.7 Lifestyle 83.6 91.7 168.4 180.1 Other 0.3 — 0.4 — Total Retail $ 135.1 $ 105.4 $ 269.4 $ 203.9 Total $ 626.3 $ 674.2 $ 1,253.0 $ 1,345.2 Refer to Note 16 of the Condensed Consolidated Financial Statements for further information related to our reportable segments. Contract Balances Customers may make payments before the satisfaction of the Company's performance obligation and recognition of revenue. These payments represent contract liabilities and are included within the caption “Customer deposits” in the Condensed Consolidated Balance Sheets. During the three and six months ended November 28, 2020, the Company recognized Net sales of $19.9 million and $26.7 million related to customer deposits that were included in the balance sheet as of August 29, 2020 and May 30, 2020, respectively.

Leases

Leases	6 Months Ended
	Nov. 28, 2020
Leases [Abstract]
Leases	Leases The components of lease expense are provided in the table below: Three Months Ended Six Months Ended (In millions) November 28, 2020 November 30, 2019 November 28, 2020 November 30, 2019 Operating lease costs $ 12.4 $ 12.6 $ 23.4 $ 25.4 Short-term lease costs 0.7 0.7 1.5 1.2 Variable lease costs* 2.0 2.2 3.6 4.4 Total $ 15.1 $ 15.5 $ 28.5 $ 31.0 *Not included in the table above for the three and six months ended November 28, 2020 are variable lease costs of $21.6 million and $38.6 million, respectively, for raw material purchases under certain supply arrangements that the Company has determined to meet the definition of a lease. This compares to purchases of $23.8 million and $45.7 million for the three and six months ended November 30, 2019, respectively. During the fourth quarter of fiscal 2020, the Company determined it was more likely than not that the fair value of certain right-of-use assets were below their carrying values and assessed these assets for impairment. As result of this assessment the Company recorded an impairment of $19.3 million in the Consolidated Statements of Comprehensive Income in the fourth quarter of fiscal 2020 which is the primary driver of lower operating lease cost in the three and six months ended November 28, 2020 compared to the prior year. At November 28, 2020, the Company had no financing leases. The undiscounted annual future minimum lease payments related to the Company's right-of-use assets are summarized by fiscal year in the following table: (In millions) 2021 $ 25.7 2022 49.4 2023 46.5 2024 41.6 2025 37.2 Thereafter 103.2 Total lease payments* $ 303.6 Less interest 30.6 Present value of lease liabilities $ 273.0 *Lease payments exclude $21.3 million of legally binding minimum lease payments for leases signed but not yet commenced. The long-term portion of the lease liabilities included in the amounts above is $205.7 million and the remainder of the lease liabilities are included in "Other accrued liabilities" in the Condensed Consolidated Balance Sheets. At November 28, 2020, the weighted average remaining lease term and weighted average discount rate for operating leases were 7 years and 2.8%, respectively. Supplemental cash flow and other information related to leases are provided in the table below: Three Months Ended Six Months Ended (In millions) November 28, 2020 November 30, 2019 November 28, 2020 November 30, 2019 Operating cash flows used for operating leases $ 11.6 $ 13.3 $ 22.6 $ 25.8 Right-of-use assets obtained in exchange for new liabilities $ 36.9 $ 4.0 $ 49.2 $ 8.6

Acquisitions

Acquisitions	6 Months Ended
	Nov. 28, 2020
Business Combinations [Abstract]
Acquisitions	Acquisitions Nine United Denmark A/S On June 7, 2018, the Company acquired 33% of the outstanding equity of Nine United Denmark A/S, d/b/a HAY and subsequently renamed to HAY ApS ("HAY”), a Copenhagen, Denmark-based, design leader in furniture and ancillary furnishings for residential and contract markets in Europe and Asia. The Company acquired its 33% ownership interest in HAY for approximately $65.5 million in cash. The Company also acquired the rights to the HAY brand in North America under a long-term license agreement for approximately $4.8 million in cash. On December 2, 2019, the Company obtained a controlling financial interest in HAY through the purchase of an additional 34% ownership interest. This acquisition allows the Company to further promote growth and development of HAY's ancillary product lines and continue to support product innovation and sales growth. The Company previously accounted for its ownership interest in HAY as an equity method investment, but upon increasing its ownership to 67%, the Company consolidated the operations of HAY. Total consideration paid for an additional 34% ownership interest of HAY was $79.0 million, exclusive of HAY cash on hand. The Company funded the acquisition with cash and cash equivalents. The previously mentioned HAY long-term licensing agreement was deemed to be a contractual preexisting relationship. As a result of the business combination, the Company recorded this arrangement at its December 2, 2019 fair value, which resulted in an increase in goodwill of $10.0 million and a net gain of approximately $6 million, which was recorded within “Gain on consolidation of equity method investments" within the Condensed Consolidated Statements of Comprehensive Income during the three months ended May 30, 2020. The goodwill was recorded within the Company’s Retail segment. The Company is a party to options, that if exercised, would require it to purchase the remaining 33% of the equity in HAY, at fair market value. This remaining redeemable noncontrolling interest in HAY is classified outside of permanent equity in the Consolidated Balance Sheets and is carried at the current estimated redemption amount. The allocation of the purchase price was finalized during the first quarter of fiscal 2021. The following table presents the allocation of purchase price related to acquired tangible assets: (In millions) Cash $ 12.1 Working capital, net of cash and inventory step-up 12.3 Net property and equipment 0.9 Other assets 3.9 Other liabilities (3.1) Net assets acquired $ 26.1 The purchase of the additional equity interest in HAY was considered to be an acquisition achieved in stages, whereby the previously held equity interest was remeasured as of the acquisition date. The Company considered multiple factors in determining the fair value of the previously held equity method investment, including the price negotiated with the selling shareholder for the 34% equity interest in HAY, an income valuation model (discounted cash flow) and current trading multiples for comparable companies. Based on this analysis, the Company recognized an immaterial non-taxable gain on the remeasurement of the previously held equity method investment of $67.8 million in the third quarter of fiscal 2020. The net gain has been recognized in “Gain on consolidation of equity method investments" within the Condensed Consolidated Statements of Comprehensive Income during the three months ended May 30, 2020. The following table summarizes the acquired identified intangible assets, valuation method employed, useful lives and fair value, as determined by the Company at the acquisition date: (In millions) Valuation Method Useful Life (years) Fair Value Inventory Step-up Comparative Sales Approach 0.8 $ 3.4 Backlog Multi-Period Excess Earnings 0.3 1.7 Deferred Revenue Adjusted Fulfillment Cost Method 0.1 (2.2) Tradename Relief from Royalty Indefinite 60.0 Product Development Relief from Royalty 8.0 22.0 Customer Relationships Multi-Period Excess Earnings 9.0 34.0 Total $ 118.9 Goodwill related to the acquisition was recorded within the International Contract segment for $101.1 million and the Retail segment for $10.0 million. Subsequent to the acquisition, the goodwill recorded to the Retail segment was fully impaired in the fourth quarter of fiscal 2020 based on the results of the Company's annual goodwill impairment assessment. naughtone On October 25, 2019 (“Acquisition Date”), the Company purchased the remaining 47.5% equity voting interest in naughtone (Holdings) Limited and naughtone Manufacturing Ltd. (together “naughtone”). naughtone is an upscale, contemporary furniture manufacturer based in Harrogate, North Yorkshire, UK. The completion of the acquisition allows the Company to further promote growth and development of naughtone's ancillary product lines, and continue to support product innovation and sales growth. The Company previously accounted for its ownership interest in naughtone as an equity method investment. Upon increasing its ownership to 100% on the Acquisition Date, the Company obtained a controlling financial interest and consolidated the operations of naughtone. Total consideration paid for naughtone on the Acquisition Date was $45.9 million, exclusive of naughtone cash on hand. The Company funded the acquisition with cash and cash equivalents. The allocation of the purchase price was finalized during the fourth quarter of fiscal 2020. The following table presents the allocation of purchase price related to acquired tangible assets: (In millions) Cash $ 5.1 Working capital, net of cash and inventory step-up 1.3 Net property and equipment 0.8 Net assets acquired $ 7.2 The purchase of the remaining equity interest in naughtone was considered to be an acquisition achieved in stages, whereby the previously held equity interest was remeasured as of the Acquisition Date. The Company considered multiple factors in determining the fair value of the previously held equity method investment, including the price negotiated with the selling shareholder for the 47.5% equity interest in naughtone, an income valuation model (discounted cash flow) and current trading multiples for comparable companies. Based on this analysis, the Company recognized a non-taxable gain of approximately $30 million on the remeasurement of the previously held equity method investment of $20.5 million. The net gain has been recognized in “Gain on consolidation of equity method investments" within the Condensed Consolidated Statements of Comprehensive Income during the three and six months ended November 30, 2019. The following table summarizes the acquired identified intangible assets, valuation method employed, useful lives and fair value, as determined by the Company at the acquisition date: (In millions) Valuation Method Useful Life (years) Fair Value Inventory Step-up Comparative Sales Approach 0.3 $ 0.2 Backlog Multi-Period Excess Earnings 0.3 0.8 Tradename Relief from Royalty Indefinite 8.5 Customer Relationships Multi-Period Excess Earnings 9.0 29.4 Total $ 38.9 Goodwill related to the acquisition was recorded within the North America Contract and International Contract segments for $35.0 million and $22.5 million, respectively. Pro Forma Results of Operations The results of naughtone and HAY’s operations have been included in the Consolidated Financial Statements beginning on October 25, 2019 and December 2, 2019 respectively. The following table provides pro forma results of operations for the three and six months ended November 30, 2019, as if naughtone and HAY had been acquired as of June 2, 2019. The pro forma results include certain purchase accounting adjustments such as the estimated change in depreciation and amortization expense on the acquired tangible and intangible assets. Pro forma results do not include any anticipated cost savings from the planned integration of these acquisitions. Accordingly, such amounts are not necessarily indicative of the results that would have occurred if the acquisitions had occurred on the dates indicated or that may result in the future. Three Months Ended Six Months Ended (In millions) November 30, 2019 November 30, 2019 Net sales $ 718.4 $ 1,439.2 Net earnings attributable to Herman Miller, Inc. $ 50.3 $ 99.3

Inventories, net

Inventories, net	6 Months Ended
	Nov. 28, 2020
Inventories [Abstract]
Inventories, Net	Inventories, net (In millions) November 28, 2020 May 30, 2020 Finished goods $ 147.1 $ 151.1 Raw materials 43.9 46.2 Total $ 191.0 $ 197.3 Inventories are valued at the lower of cost or market and include material, labor, and overhead. Certain inventories within our North America Contract manufacturing operations are valued using the last-in, first-out (LIFO) method. Inventories of all other operations are valued using the first-in, first-out (FIFO) method.

Goodwill and Indefinite-lived I

Goodwill and Indefinite-lived Intangibles	6 Months Ended
	Nov. 28, 2020
Goodwill and Indefinite-lived Intangibles [Abstract]
Goodwill and Indefinite-lived Intangibles	Goodwill and Indefinite-Lived Intangibles Goodwill and other indefinite-lived intangible assets included in the Condensed Consolidated Balance Sheets consisted of the following as of November 28, 2020 and May 30, 2020: (In millions) Goodwill Indefinite-lived Intangible Assets May 30, 2020 $ 346.0 $ 92.8 Foreign currency translation adjustments 12.5 3.6 November 28, 2020 $ 358.5 $ 96.4 Goodwill is tested for impairment at the reporting unit level annually, or more frequently, when events or changes in circumstances indicate that the fair value of a reporting unit has more likely than not declined below its carrying value. When testing goodwill for impairment, the Company may first assess qualitative factors. If an initial qualitative assessment identifies that it is more likely than not that the carrying value of a reporting unit exceeds its estimated fair value, additional quantitative testing is performed. The Company may also elect to bypass the qualitative testing and proceed directly to the quantitative testing. If the quantitative testing indicates that goodwill is impaired, the carrying value of goodwill is written down to fair value. Each of the reporting units were reviewed for impairment using a quantitative assessment as of March 31, 2020, our annual testing date. In performing the quantitative impairment test, the Company determined that the fair value of the North America and International reporting units exceeded the carrying amount and, as such, these reporting units were not impaired. The assessment of the Retail and Maharam reporting units indicated that the carrying value of these reporting units exceeded their fair values, and goodwill impairment charges of $88.8 million and $36.7 million, respectively, were recorded in the fourth quarter of fiscal 2020 resulting in no goodwill remaining in either the Retail or Maharam reporting units. Accumulated goodwill impairment losses were $125.3 million as of November 28, 2020 and May 30, 2020. The fair value of the Company's International reporting unit, which includes $163.7 million of goodwill as of May 30, 2020, exceeded its carrying value by 17%. Due to the level that the reporting unit fair value exceeded the carrying amount and the results of the sensitivity analysis, the Company may need to record an impairment charge if the operating results of its International reporting unit were to decline in future periods. Intangible assets with indefinite useful lives are not subject to amortization and are evaluated annually for impairment, or more frequently, when events or changes in circumstances indicate that the fair value of an intangible asset may not be recoverable. In fiscal 2020, the Company performed quantitative assessments in testing indefinite-lived intangible assets for impairment, which resulted in the carrying values of the DWR, Maharam, HAY and naughtone trade names exceeding their fair values by $53.3 million, and impairment charges of this amount were recognized during the fourth quarter of fiscal 2020. If the residual cash flows related to these trade names were to decline in future periods, the Company may need to record an additional impairment charge.

Employee Benefit Plans

Employee Benefit Plans	6 Months Ended
	Nov. 28, 2020
Employee Benefit Plans [Abstract]
Employee Benefit Plans	Employee Benefit Plans The following table summarizes the components of net periodic benefit cost for the Company's defined benefit pension plan for the three and six months ended: Three Months Ended Six Months Ended (In millions) November 28, 2020 November 30, 2019 November 28, 2020 November 30, 2019 Interest cost $ 0.7 $ 0.6 $ 1.3 $ 1.2 Expected return on plan assets (1.4) (1.1) (2.8) (2.2) Net amortization loss 1.6 0.9 3.3 1.7 Net periodic benefit cost $ 0.9 $ 0.4 $ 1.8 $ 0.7

Earnings Per Share

Earnings Per Share	6 Months Ended
	Nov. 28, 2020
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share The following table reconciles the numerators and denominators used in the calculations of basic and diluted earnings per share (EPS) for the three and six months ended: Three Months Ended Six Months Ended November 28, 2020 November 30, 2019 November 28, 2020 November 30, 2019 Numerators : Numerator for both basic and diluted EPS, Net earnings attributable to Herman Miller, Inc. - in millions $ 51.3 $ 78.6 $ 124.2 $ 126.8 Denominators : Denominator for basic EPS, weighted-average common shares outstanding 58,908,094 59,061,731 58,869,699 58,985,366 Potentially dilutive shares resulting from stock plans 359,304 340,270 174,229 333,616 Denominator for diluted EPS 59,267,398 59,402,001 59,043,928 59,318,982 Antidilutive equity awards not included in weighted-average common shares - diluted 301,002 86 1,067,979 43

Stock-Based Compensation

Stock-Based Compensation	6 Months Ended
	Nov. 28, 2020
Stock-Based Compensation [Abstract]
Stock-Based Compensation	Stock-Based Compensation The following table summarizes the stock-based compensation expense and related income tax effect for the three and six months ended: Three Months Ended Six Months Ended (In millions) November 28, 2020 November 30, 2019 November 28, 2020 November 30, 2019 Stock-based compensation expense $ 2.4 $ 2.8 $ 3.9 $ 5.4 Related income tax effect $ 0.6 $ 0.6 $ 0.9 $ 1.2

Income Taxes

Income Taxes	6 Months Ended
	Nov. 28, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company's process for determining the provision for income taxes for the three and six months ended November 28, 2020 involved using an estimated annual effective tax rate which was based on expected annual income and statutory tax rates across the various jurisdictions in which it operates. The effective tax rates were 23.5% and 14.3%, respectively, for the three month periods ended November 28, 2020 and November 30, 2019. The same period in the prior year included a non-taxable gain on consolidation of an equity method investment which is the primary driver of the year over year increase in the effective tax rate. For the three months ended November 28, 2020, the effective tax rate is higher than the United States federal statutory rate due to United States state income taxes and the mix of earnings in tax jurisdictions that had rates that were higher than the United States federal statutory rate. For the three months ended November 30, 2019, the effective tax rate was lower than the United States federal statutory rate mainly as a result from the impact of a non-taxable gain on consolidation of an equity method investment. The effective tax rates were 22.6% and 16.9%, respectively, for the six month periods ended November 28, 2020 and November 30, 2019. The same period in the prior year included a non-taxable gain on consolidation of an equity method investment which is the primary driver of the year over year increase in the effective tax rate. For the six months ended November 28, 2020, the effective tax rate is higher than the United States federal statutory rate due to United States state income taxes and the mix of earnings in tax jurisdictions that had rates that were higher than the United States federal statutory rate. For the six months ended November 30, 2019, the effective tax rate was lower than the United States federal statutory rate mainly due to the non-taxed nature of the gain on consolidation of an equity method investment. The Company recognizes interest and penalties related to uncertain tax benefits through income tax expense in its Condensed Consolidated Statements of Comprehensive Income. Interest and penalties recognized in the Company's Condensed Consolidated Statements of Comprehensive Income were negligible for the three and six months ended November 28, 2020 and November 30, 2019. The Company's recorded liability for potential interest and penalties related to uncertain tax benefits was: (In millions) November 28, 2020 May 30, 2020 Liability for interest and penalties $ 1.0 $ 0.8 Liability for uncertain tax positions, current $ 2.3 $ 1.9 The Company is subject to periodic audits by domestic and foreign tax authorities. Currently, the Company is undergoing routine periodic audits in both domestic and foreign tax jurisdictions. It is reasonably possible that the amounts of unrecognized tax benefits could change in the next twelve months because of the audits. Tax payments related to these audits, if any, are not expected to be material to the Company's Condensed Consolidated Statements of Comprehensive Income. For the majority of tax jurisdictions, the Company is no longer subject to state, local, or non-United States income tax examinations by tax authorities for fiscal years before 2016.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Nov. 28, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The Company's financial instruments consist of cash equivalents, marketable securities, accounts and notes receivable, deferred compensation plan, accounts payable, debt, interest rate swaps, foreign currency exchange contracts, redeemable noncontrolling interests, indefinite-lived intangible assets and right-of-use assets. The Company's financial instruments, other than long-term debt, are recorded at fair value. The carrying value and fair value of the Company's long-term debt, including current maturities, is as follows for the periods indicated: (In millions) November 28, 2020 May 30, 2020 Carrying value $ 327.2 $ 591.3 Fair value $ 334.4 $ 594.0 The following describes the methods the Company uses to estimate the fair value of financial assets and liabilities recorded in net earnings, which have not significantly changed in the current period: Cash and cash equivalents — The Company invests excess cash in short term investments in the form of commercial paper and money market funds. Commercial paper is valued at amortized costs while money market funds are valued using net asset value ("NAV"). Mutual Funds-equity — The Company's equity securities primarily include equity mutual funds. The equity mutual fund investments are recorded at fair value using quoted prices for similar securities. Deferred compensation plan — The Company's deferred compensation plan primarily includes various domestic and international mutual funds that are recorded at fair value using quoted prices for similar securities. Foreign currency exchange contracts — The Company's foreign currency exchange contracts are valued using an approach based on foreign currency exchange rates obtained from active markets. The estimated fair value of forward currency exchange contracts is based on month-end spot rates as adjusted by market-based current activity. These forward contracts are not designated as hedging instruments. The following table sets forth financial assets and liabilities measured at fair value through net income and the respective pricing levels to which the fair value measurements are classified within the fair value hierarchy as of November 28, 2020 and May 30, 2020. (In millions) November 28, 2020 May 30, 2020 Financial Assets NAV Quoted Prices with Other NAV Quoted Prices with Other Cash equivalents: Money market funds $ 90.1 $ — $ 283.7 $ — Mutual funds - equity — 0.7 — 0.7 Foreign currency forward contracts — 1.4 — 1.1 Deferred compensation plan — 16.4 — 13.2 Total $ 90.1 $ 18.5 $ 283.7 $ 15.0 Financial Liabilities Foreign currency forward contracts $ — $ 0.3 $ — $ 0.8 Total $ — $ 0.3 $ — $ 0.8 The following describes the methods the Company uses to estimate the fair value of financial assets and liabilities recorded in other comprehensive income, which have not significantly changed in the current period: Mutual funds-fixed income — The Company's fixed-income securities primarily include fixed income mutual funds and government obligations. These investments are recorded at fair value using quoted prices for similar securities. Interest rate swap agreements — The value of the Company's interest rate swap agreements is determined using a market approach based on rates obtained from active markets. The interest rate swap agreements are designated as cash flow hedging instruments. The following table sets forth financial assets and liabilities measured at fair value through other comprehensive income and the respective pricing levels to which the fair value measurements are classified within the fair value hierarchy as of November 28, 2020 and May 30, 2020. (In millions) November 28, 2020 May 30, 2020 Financial Assets Quoted Prices with Other Observable Inputs (Level 2) Quoted Prices with Other Observable Inputs (Level 2) Mutual funds - fixed income $ 6.5 $ 6.3 Total $ 6.5 $ 6.3 Financial Liabilities Interest rate swap agreement $ 23.5 $ 25.0 Total $ 23.5 $ 25.0 The following is a summary of the carrying and market values of the Company's fixed income mutual funds and equity mutual funds as of the dates indicated: November 28, 2020 May 30, 2020 (In millions) Cost Unrealized Market Cost Unrealized Market Mutual funds - fixed income $ 6.4 $ 0.1 $ 6.5 $ 6.2 $ 0.1 $ 6.3 Mutual funds - equity 0.5 0.2 0.7 0.6 0.1 0.7 Total $ 6.9 $ 0.3 $ 7.2 $ 6.8 $ 0.2 $ 7.0 The cost of securities sold is based on the specific identification method; realized gains and losses resulting from such sales are included in the Condensed Consolidated Statements of Comprehensive Income within "Other (income) expense, net". The Company views its equity and fixed income mutual funds as available for use in its current operations. Accordingly, the investments are recorded within Current Assets within the Condensed Consolidated Balance Sheets. Derivative Instruments and Hedging Activities Foreign Currency Forward Contracts The Company transacts business in various foreign currencies and has established a program that primarily utilizes foreign currency forward contracts to reduce the risks associated with the effects of certain foreign currency exposures. Under this program, the Company's strategy is to have increases or decreases in our foreign currency exposures offset by gains or losses on the foreign currency forward contracts to mitigate the risks and volatility associated with foreign currency transaction gains or losses. Foreign currency exposures typically arise from net liability or asset exposures in non-functional currencies on the balance sheets of our foreign subsidiaries. Foreign currency forward contracts generally settle within 30 days and are not used for trading purposes. These forward contracts are not designated as hedging instruments. Accordingly, we record the fair value of these contracts as of the end of the reporting period in the Consolidated Balance Sheets with changes in fair value recorded within the Consolidated Statements of Comprehensive Income. The balance sheet classification for the fair values of these forward contracts is to Other current assets for unrealized gains and to Other accrued liabilities for unrealized losses. The Consolidated Statements of Comprehensive Income classification for the fair values of these forward contracts is to Other (income) expense, net, for both realized and unrealized gains and losses. Interest Rate Swaps The Company enters into interest rate swap agreements to manage its exposure to interest rate changes and its overall cost of borrowing. The Company's interest rate swap agreements were entered into to exchange variable rate interest payments for fixed rate payments over the life of the agreement without the exchange of the underlying notional amounts. The notional amount of the interest rate swap agreements is used to measure interest to be paid or received. The differential paid or received on the interest rate swap agreements is recognized as an adjustment to interest expense. The interest rate swaps were designated cash flow hedges at inception and the facts and circumstances of the hedged relationship remains consistent with the initial quantitative effectiveness assessment in that the hedged instruments remain an effective accounting hedge as of November 28, 2020. Since a designated derivative meets hedge accounting criteria, the fair value of the hedge is recorded in the Consolidated Statements of Stockholders’ Equity as a component of Accumulated other comprehensive loss, net of tax. The ineffective portion of the change in fair value of the derivatives is immediately recognized in earnings. The interest rate swap agreements are assessed for hedge effectiveness on a quarterly basis. As of November 28, 2020, the Company had the following two outstanding interest rate swap agreements: (In millions) Notional Amount Forward Start Date Termination Date Effective Fixed Interest Rate September 2016 Interest Rate Swap $ 150.0 January 3, 2018 January 3, 2028 1.949 % June 2017 Interest Rate Swap $ 75.0 January 3, 2018 January 3, 2028 2.387 % The swaps above effectively converted indebtedness anticipated to be borrowed on the Company's revolving line of credit up to the notional amounts from a LIBOR-based floating interest rate plus applicable margin to an effective fixed interest rate plus applicable margin under the agreements as of the forward start date. As of November 28, 2020, the fair value of the Company’s two outstanding interest rate swap agreements was a liability of $23.5 million. The liability fair value was recorded within "Other liabilities" within the Condensed Consolidated Balance Sheets. The following table summarizes the effects of the interest rate swap agreements for the three and six months ended: Three Months Ended Six Months Ended (In millions) November 28, 2020 November 30, 2019 November 28, 2020 November 30, 2019 Gain (loss) recognized in Other comprehensive loss (effective portion) $ 0.9 $ 3.4 $ 1.2 $ (5.3) (Loss) gain reclassified from Accumulated other comprehensive loss into earnings $ (1.1) $ — $ (2.2) $ 0.1 There were no gains or losses recognized in earnings for hedge ineffectiveness for the three and six month periods ended November 28, 2020 and November 30, 2019, respectively. The amount of loss expected to be reclassified from Accumulated other comprehensive loss into earnings during the next twelve months is $4.4 million, and net of tax is $3.3 million. Redeemable Noncontrolling Interests Changes in the Company's redeemable noncontrolling interest in HAY for the six months ended November 28, 2020 are as follows: (In millions) November 28, 2020 Beginning Balance $ 50.4 Net income attributable to redeemable noncontrolling interests 2.0 Distributions to redeemable noncontrolling interests (2.7) Cumulative translation adjustments attributable to redeemable noncontrolling interests 2.8 Foreign currency translation adjustments 4.0 Ending Balance $ 56.5 During August 2019, the Company acquired all of the remaining redeemable noncontrolling equity interests in the Company's subsidiary, Herman Miller Consumer Holdings, Inc. for $20.4 million. Other The following table summarizes the valuation of the Company's assets measured at fair value on a non-recurring basis as of May 30, 2020: (In millions) May 30, 2020 Assets: Level 3 Indefinite-lived intangible assets $ 92.8 DWR right-of-use assets 110.9 Not included in the above is goodwill related to the Retail and Maharam reporting units, as these were fully written off with a resulting impairment charge of $125.5 million in the fourth quarter of fiscal 2020.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Nov. 28, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Product Warranties The Company provides coverage to the end-user for parts and labor on products sold under its warranty policy and for other product-related matters. The standard length of warranty is 12 years for the majority of products sold; however, this varies depending on the product classification. The Company does not sell or otherwise issue warranties or warranty extensions as stand-alone products. Reserves have been established for various costs associated with the Company's warranty program. General warranty reserves are based on historical claims experience and other currently available information and are periodically adjusted for business levels and other factors. Specific reserves are established once an issue is identified with the amounts for such reserves based on the estimated cost of correction. The Company provides an assurance-type warranty that ensures that products will function as intended. As such, the Company's estimated warranty obligation is accounted for as a liability and is recorded within current and long-term liabilities within the Condensed Consolidated Balance Sheets. Changes in the warranty reserve for the stated periods were as follows: Three Months Ended Six Months Ended (In millions) November 28, 2020 November 30, 2019 November 28, 2020 November 30, 2019 Accrual Balance — beginning $ 60.3 $ 53.3 $ 59.2 $ 53.1 Accrual for warranty matters 2.7 6.3 7.3 11.6 Settlements and adjustments (3.2) (5.0) (6.7) (10.1) Accrual Balance — ending $ 59.8 $ 54.6 $ 59.8 $ 54.6 Guarantees The Company is periodically required to provide performance bonds to do business with certain customers. These arrangements are common in the industry and generally have terms ranging between one year and three years. The bonds are required to provide assurance to customers that the products and services they have purchased will be installed and/or provided properly and without damage to their facilities. The bonds are provided by various bonding agencies. However, the Company is ultimately liable for claims that may occur against them. As of November 28, 2020, the Company had a maximum financial exposure related to performance bonds totaling approximately $5.5 million. The Company has no history of claims, nor is it aware of circumstances that would require it to pay, under any of these arrangements. The Company also believes that the resolution of any claims that might arise in the future, either individually or in the aggregate, would not materially affect the Company's Consolidated Financial Statements. Accordingly, no liability has been recorded in respect to these bonds as of either November 28, 2020 or May 30, 2020. The Company has entered into standby letter of credit arrangements for purposes of protecting various insurance companies and lessors against default on insurance premium and lease payments. As of November 28, 2020, the Company had a maximum financial exposure from these standby letters of credit totaling approximately $9.8 million, all of which is considered usage against the Company's revolving line of credit. The Company has no history of claims, nor is it aware of circumstances that would require it to perform under any of these arrangements and believes that the resolution of any claims that might arise in the future, either individually or in the aggregate, would not materially affect the Company's Consolidated Financial Statements. Accordingly, no liability has been recorded in respect to these arrangements as of November 28, 2020 and May 30, 2020. Contingencies The Company is also involved in legal proceedings and litigation arising in the ordinary course of business. In the opinion of management, the outcome of such proceedings and litigation currently pending will not have a material adverse effect, if any, on the Company's Consolidated Financial Statements.

Short-Term Borrowings and Long-

Short-Term Borrowings and Long-Term Debt	6 Months Ended
	Nov. 28, 2020
Debt Disclosure [Abstract]
Short-Term Borrowings and Long-Term Debt	Short-Term Borrowings and Long-Term Debt Short-term borrowings and long-term debt as of November 28, 2020 and May 30, 2020 consisted of the following obligations: (In millions) November 28, 2020 May 30, 2020 Debt securities, 6.0%, due March 1, 2021 $ 50.0 $ 50.0 Debt securities, 4.95%, due May 20, 2030 49.9 49.9 Syndicated revolving line of credit, due August 2024 225.0 490.0 Supplier financing program 2.3 1.4 Total debt $ 327.2 $ 591.3 Less: Current debt (52.3) (51.4) Long-term debt $ 274.9 $ 539.9 As of May 30, 2020, the Company's syndicated revolving line of credit provided the Company with up to $500 million in revolving variable interest borrowing capacity and included an "accordion feature" allowing the Company to increase, at its option and subject to the approval of the participating banks, the aggregate borrowing capacity of the facility by up to $250 million. Outstanding borrowings bear interest at rates based on the prime rate, federal funds rate, LIBOR or negotiated rates as outlined in the agreement. Interest is payable periodically throughout the period if borrowings are outstanding. In June 2020, the Company repaid the $265 million draw on its syndicated revolving line of credit that was taken as a precautionary measure in March 2020 to provide additional near-term liquidity given the uncertainty related to COVID-19. Available borrowings under the syndicated revolving line of credit were as follows for the periods indicated: (In millions) November 28, 2020 May 30, 2020 Syndicated revolving line of credit borrowing capacity $ 500.0 $ 500.0 Less: Borrowings under the syndicated revolving line of credit 225.0 490.0 Less: Outstanding letters of credit 9.8 9.4 Available borrowings under the syndicated revolving line of credit $ 265.2 $ 0.6 Supplier Financing Program The Company has an agreement with a third-party financial institution that allows certain participating suppliers the ability to finance payment obligations from the Company. Under this program, participating suppliers may finance payment obligations of the Company, prior to their scheduled due dates, at a discounted price to the third-party financial institution. The Company has lengthened the payment terms for certain suppliers that have chosen to participate in the program. As a result, certain amounts due to suppliers have payment terms that are longer than standard industry practice and as such, these amounts have been excluded from the caption “Accounts payable” in the Condensed Consolidated Balance Sheets as the amounts have been accounted for by the Company as current debt, within the caption “Short-term borrowings and current portion of long-term debt”.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	6 Months Ended
	Nov. 28, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss The following table provides an analysis of the changes in accumulated other comprehensive loss for the six months ended November 28, 2020 and November 30, 2019: (In millions) Cumulative Translation Adjustments Pension and Other Post-retirement Benefit Plans Unrealized Interest Rate Swap Agreement Accumulated Other Comprehensive Loss Balance at May 30, 2020 $ (56.0) $ (59.2) $ 0.1 $ (18.9) $ (134.0) Other comprehensive income (loss), net of tax before reclassifications 32.3 — (0.1) 3.4 35.6 Reclassification from accumulated other comprehensive loss - Other, net — 3.0 — (2.2) 0.8 Tax benefit — (0.5) — — (0.5) Net reclassifications — 2.5 — (2.2) 0.3 Net current period other comprehensive income (loss) 32.3 2.5 (0.1) 1.2 35.9 Balance at November 28, 2020 $ (23.7) $ (56.7) $ — $ (17.7) $ (98.1) Balance at June 1, 2019 $ (48.3) $ (45.0) $ — $ (0.9) $ (94.2) Other comprehensive income (loss), net of tax before reclassifications 4.4 — — (5.4) (1.0) Reclassification from accumulated other comprehensive loss - Other, net — 1.7 — 0.1 1.8 Tax benefit — (0.3) — — (0.3) Net reclassifications — 1.4 — 0.1 1.5 Net current period other comprehensive income (loss) 4.4 1.4 — (5.3) 0.5 Balance at November 30, 2019 $ (43.9) (43.6) $ — $ (6.2) $ (93.7)

Operating Segments

Operating Segments	6 Months Ended
	Nov. 28, 2020
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Operating Segments	Operating Segments The Company's reportable segments consist of North America Contract, International Contract, and Retail. The North America Contract segment includes the operations associated with the design, manufacture and sale of furniture and textile products for work-related settings, including office, education, and healthcare environments, throughout the United States and Canada. The business associated with the Company's owned contract furniture dealers is also included in the North America Contract segment. In addition to the Herman Miller brand, this segment includes the operations associated with the design, manufacture and sale of high-craft furniture products and textiles including Geiger wood products, Maharam textiles, Nemschoff, naughtone and Herman Miller Collection products. The International Contract segment includes the operations associated with the design, manufacture, and sale of furniture products, primarily for work-related settings in EMEA, Latin America and Asia-Pacific. The Retail segment includes operations associated with the sale of modern design furnishings and accessories to third party retailers, as well as direct to consumer sales through e-commerce, direct mailing catalogs, DWR studios and HAY stores. The Company also reports a “Corporate” category consisting primarily of unallocated expenses related to general corporate functions, including, but not limited to, certain legal, executive, corporate finance, information technology, administrative and acquisition-related costs. Management regularly reviews corporate costs and believes disclosing such information provides more visibility and transparency regarding how the chief operating decision maker reviews results of the Company. The accounting policies of the operating segments are the same as those of the Company. The following is a summary of certain key financial measures for the respective periods indicated: Three Months Ended Six Months Ended (In millions) November 28, 2020 November 30, 2019 November 28, 2020 November 30, 2019 Net Sales: North America Contract $ 323.1 $ 450.6 $ 661.9 $ 909.3 International Contract 168.1 118.2 321.7 232.0 Retail 135.1 105.4 269.4 203.9 Total $ 626.3 $ 674.2 $ 1,253.0 $ 1,345.2 Operating Earnings (Loss): North America Contract $ 35.6 $ 62.5 $ 87.4 $ 125.4 International Contract 23.4 12.8 48.4 25.9 Retail 22.6 (0.9) 51.8 (4.9) Corporate (10.6) (12.0) (21.2) (23.8) Total $ 71.0 $ 62.4 $ 166.4 $ 122.6 (In millions) November 28, 2020 May 30, 2020 Total Assets: North America Contract $ 760.9 $ 769.5 International Contract 558.8 512.5 Retail 323.7 310.9 Corporate 385.1 461.0 Total $ 2,028.5 $ 2,053.9

Restructuring Expense

Restructuring Expense	6 Months Ended
	Nov. 28, 2020
Restructuring and Related Activities [Abstract]
Restructuring Expense	Restructuring Expense During the fourth quarter of fiscal 2018, the Company announced a facilities consolidation plan related to its International Contract segment. This impacted certain office and manufacturing facilities in the United Kingdom and C hina. The plan is expected to generate cost savings of approxima tely $3 million. To date, the Company recognized restructuring and impairment expenses of $5.9 million, with a net credit of $1.9 million recognized to-date in fiscal 2021 and the remainder in fiscal 2020, 2019 and 2018. These expenses related to the facilities consolidation plan, comprised primarily of an asset impairment recorded against an office building in the United Kingdom that was vacated and the consolidation of the Company's manufacturing facilities in China. No future restructuring costs related to the plan are expected as the plan is substantially complete. The office building and related assets in China were sold in the first quarter of fiscal 2021, resulting in a gain of approximately $3.4 million. The office building and related assets in the United Kingdom were sold in the second quarter of fiscal 2021, resulting in a nominal gain. Both of these gains are included within "Restructuring expense" in the Condensed Consolidated Statements of Comprehensive Income. In the second quarter of fiscal 2020, the North America Contract segment initiated restructuring discussions with labor unions related to its Nemschoff operation in Wisconsin. The discussions were concluded in the third quarter of fiscal 2020 and as a result, the Company anticipates the total estimated costs related to the actions will be approximately $5 million. These restructuring costs relate to potential partial outsourcing and in-sourcing strategies, long-lived asset impairments and employee-related cos ts. To date, the Company has recorded approximately $3.1 million in pre-tax restructuring expense related to this plan, with a net credit of $0.1 million recognized in fiscal 2021 and the remainder in fiscal 2020. The plan is expected to be completed in fiscal 2021. In the second quarter of fiscal 2020, the Company initiated a reorganization of the Global Sales and Product teams. The reor ganization activities occurred primarily in the North America business with additional costs incurred Internationally. To dat e, the Company has recorded a total of $2.6 million in pre-tax restructuring expense related to this plan. The reorganiz ation is complete and no future costs related to this plan are expected. In the third quarter of fiscal 2020, the Company announced a reorganization of the Retail segment's leadership team. The Company recognized pre-tax severance and employee related restructuring expense of $2.2 million related to the plan. No future restructuring costs related to the plan are expected as the plan is complete. The following table provides an analysis of the changes in the restructuring costs reserve for the above plans for the six months ended November 28, 2020: (In millions) Severance and Employee-Related Exit or Disposal Activities Total May 30, 2020 $ 5.9 $ 0.8 $ 6.7 Restructuring Costs 0.1 (2.0) $ (1.9) Amounts Paid (2.1) (0.1) $ (2.2) Other* $ — $ 3.4 $ 3.4 November 28, 2020 $ 3.9 $ 2.1 $ 6.0 *This represents the gain on the sale of office building and related assets in China and the United Kingdom which were recorded as restructuring cost, however, do not impact the restructuring reserve. In the fourth quarter of fiscal 2020, the Company announced a restructuring pl an (“May 2020 restructuring plan") to substantially reduce expenses in response to the impact of the COVID-19 pandemic and related restrictions. These activities included voluntary and involuntary reductions in its North American and International workforces. Combined, these actions resulted in the elimination of approximately 400 full-time positions throughout the Company in various businesses and functions. As the result of these actions, the Company projects an annualized expense reduction of approximately $40 million. To date, the Company incurred severance and related charges of $18.3 million with $3.1 million recognized in fiscal 2021 and the remainder in fiscal 2020. No material future restructuring costs related to the plan are expected as the plan is substantially complete and t he remaining amounts will be paid in fiscal 2021. The following table provides an analysis of the changes in the restructuring cost reserve for the six months ended November 28, 2020: (In millions) Severance and Employee-Related May 30, 2020 $ 15.3 Restructuring Costs 3.1 Amounts Paid (16.0) November 28, 2020 $ 2.4 The following is a summary of restructuring expenses by segment for the periods indicated: Three Months Ended Six Months Ended (In millions) November 28, 2020 November 30, 2019 November 28, 2020 November 30, 2019 North America Contract $ 0.8 $ 3.8 $ 2.4 $ 5.5 International Contract 1.6 0.4 (1.2) 0.6 Total $ 2.4 $ 4.2 $ 1.2 $ 6.1

Variable Interest Entities

Variable Interest Entities	6 Months Ended
	Nov. 28, 2020
Variable Interest Entities [Abstract]
Variable Interest Entities	Variable Interest Entities The Company has long-term notes receivable with a third-party owned dealer that are deemed to be variable interests in a variable interest entity. The carrying value of these long-term notes receivable was $1.3 million and $1.5 million as of November 28, 2020 and May 30, 2020, respectively, and represents the Company’s maximum exposure to loss. The Company is not deemed to be the primary beneficiary of the variable interest entity as the entity controls the activities that most significantly impact the entity’s economic performance, including sales, marketing, and operations.

Recently Issued Accounting St_2

Recently Issued Accounting Standards (Policies)	6 Months Ended
	Nov. 28, 2020
Accounting Standards Update and Change in Accounting Principle [Abstract]
New Accounting Pronouncements, Policy [Policy Text Block]	Recently Adopted Accounting Standards On May 31, 2020, the Company adopted Accounting Standards Update ("ASU") No. 2016-13, "Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments" using the modified retrospective method. This update replaces the existing incurred loss impairment model with an expected loss model and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates including customer credit quality, historical write-off trends and general information regarding industry trends and the macroeconomic environment. The adoption did not have a material impact on the Company's financial statements, accounting policies or methods utilized to determine the allowance for doubtful accounts. On May 31, 2020, the Company adopted ASU No. 2018-13, "Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement" using the prospective method. This update modifies certain disclosure requirements for fair value measurements. The adoption did not have a material impact on the Company's financial statements. Recently Issued Accounting Standards Not Yet Adopted The Company is currently evaluating the impact of adopting the following relevant standards issued by the FASB: Standard Description Effective Date 2018-14 Compensation - Retirement Benefits - Defined Benefit Plans - General (Subtopic 715-20): Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans This update eliminates, adds and clarifies certain disclosure requirements for employers that sponsor defined benefit pension or other post-retirement plans. Early adoption is permitted. The Company does not expect the adoption of this standard to have a material impact on its financial statements. May 30, 2021 All other issued and not yet effective accounting standards are not relevant to the Company.

Inventories (Policies)

Inventories (Policies)	6 Months Ended
	Nov. 28, 2020
Inventories [Abstract]
Inventory, Policy	Inventories are valued at the lower of cost or market and include material, labor, and overhead. Certain inventories within our North America Contract manufacturing operations are valued using the last-in, first-out (LIFO) method. Inventories of all other operations are valued using the first-in, first-out (FIFO) method.

Stock-Based Compensation - Poli

Stock-Based Compensation - Policies (Policies)	6 Months Ended
	Nov. 28, 2020
Accounting Policies [Abstract]
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]	Certain of the Company's equity-based compensation awards contain provisions that allow for continued vesting into retirement. Stock-based awards are considered fully vested for expense attribution purposes when the employee's retention of the award is no longer contingent on providing subsequent service.

Fair Value Measurements (Polici

Fair Value Measurements (Policies)	6 Months Ended
	Nov. 28, 2020
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments, Policy	The cost of securities sold is based on the specific identification method; realized gains and losses resulting from such sales are included in the Condensed Consolidated Statements of Comprehensive Income within "Other (income) expense, net".
Marketable Securities, Policy	The Company views its equity and fixed income mutual funds as available for use in its current operations. Accordingly, the investments are recorded within Current Assets within the Condensed Consolidated Balance Sheets.
Derivatives, Methods of Accounting, Hedging Derivatives, Policy	Foreign Currency Forward Contracts The Company transacts business in various foreign currencies and has established a program that primarily utilizes foreign currency forward contracts to reduce the risks associated with the effects of certain foreign currency exposures. Under this program, the Company's strategy is to have increases or decreases in our foreign currency exposures offset by gains or losses on the foreign currency forward contracts to mitigate the risks and volatility associated with foreign currency transaction gains or losses. Foreign currency exposures typically arise from net liability or asset exposures in non-functional currencies on the balance sheets of our foreign subsidiaries. Foreign currency forward contracts generally settle within 30 days and are not used for trading purposes. These forward contracts are not designated as hedging instruments. Accordingly, we record the fair value of these contracts as of the end of the reporting period in the Consolidated Balance Sheets with changes in fair value recorded within the Consolidated Statements of Comprehensive Income. The balance sheet classification for the fair values of these forward contracts is to Other current assets for unrealized gains and to Other accrued liabilities for unrealized losses. The Consolidated Statements of Comprehensive Income classification for the fair values of these forward contracts is to Other (income) expense, net, for both realized and unrealized gains and losses. Interest Rate Swaps The Company enters into interest rate swap agreements to manage its exposure to interest rate changes and its overall cost of borrowing. The Company's interest rate swap agreements were entered into to exchange variable rate interest payments for fixed rate payments over the life of the agreement without the exchange of the underlying notional amounts. The notional amount of the interest rate swap agreements is used to measure interest to be paid or received. The differential paid or received on the interest rate swap agreements is recognized as an adjustment to interest expense.

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	6 Months Ended
	Nov. 28, 2020
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	Revenue disaggregated by contract type has been provided in the table below: Three Months Ended Six Months Ended (In millions) November 28, 2020 November 30, 2019 November 28, 2020 November 30, 2019 Net Sales: Single performance obligation Product revenue $ 544.3 $ 572.7 $ 1,087.6 $ 1,138.9 Multiple performance obligations Product revenue 77.2 95.8 155.7 195.7 Service revenue 2.9 2.9 6.0 5.2 Other 1.9 2.8 3.7 5.4 Total $ 626.3 $ 674.2 $ 1,253.0 $ 1,345.2 Effective in the first quarter of fiscal 2021, the Company has revised its product categories in the table below to consist of Workplace, Performance Seating, Lifestyle and Other. The change in these product categories reflects how the Company internally reports and evaluates products when making operational decisions. Prior year results disclosed in the table below have been revised to reflect these changes. The Workplace category includes products centered on creating highly functional and productive settings for both groups and individuals. This category focuses on the development of products, beyond seating, that define boundaries, support work and enable productivity. The Performance Seating category includes products centered on seating ergonomics, productivity and function across an evolving and diverse range of settings. This category focuses on the development of ergonomic seating solutions for specific use cases requiring more than basic utility. The Lifestyle category includes products focused on bringing spaces to life through beautiful yet functional products. This category focuses on the development of products that support a way of living, in thoughtful yet elevated ways. The products in this category help create emotive and visually appealing spaces via a portfolio that offers diversity in aesthetics, price and performance. Revenue disaggregated by product type and reportable segment has been provided in the table below: Three Months Ended Six Months Ended (In millions) November 28, 2020 November 30, 2019 November 28, 2020 November 30, 2019 North America Contract: Workplace $ 197.2 $ 277.3 $ 404.3 $ 560.8 Performance Seating 74.7 108.6 152.2 220.5 Lifestyle 20.4 24.5 42.8 48.0 Other 30.8 40.2 62.6 80.0 Total North America Contract $ 323.1 $ 450.6 $ 661.9 $ 909.3 International Contract: Workplace $ 35.1 $ 45.3 $ 77.0 $ 92.8 Performance Seating 73.4 61.5 136.3 118.8 Lifestyle 57.1 7.4 103.5 13.4 Other 2.5 4.0 4.9 7.0 Total International Contract $ 168.1 $ 118.2 $ 321.7 $ 232.0 Retail: Workplace $ 2.0 $ 1.1 $ 4.0 $ 2.1 Performance Seating 49.2 12.6 96.6 21.7 Lifestyle 83.6 91.7 168.4 180.1 Other 0.3 — 0.4 — Total Retail $ 135.1 $ 105.4 $ 269.4 $ 203.9 Total $ 626.3 $ 674.2 $ 1,253.0 $ 1,345.2

Leases (Tables)

Leases (Tables)	6 Months Ended
	Nov. 28, 2020
Leases [Abstract]
Summary of Lease Expense Components	The components of lease expense are provided in the table below: Three Months Ended Six Months Ended (In millions) November 28, 2020 November 30, 2019 November 28, 2020 November 30, 2019 Operating lease costs $ 12.4 $ 12.6 $ 23.4 $ 25.4 Short-term lease costs 0.7 0.7 1.5 1.2 Variable lease costs* 2.0 2.2 3.6 4.4 Total $ 15.1 $ 15.5 $ 28.5 $ 31.0
Summary of Future Estimated Minimum Lease Payments	The undiscounted annual future minimum lease payments related to the Company's right-of-use assets are summarized by fiscal year in the following table: (In millions) 2021 $ 25.7 2022 49.4 2023 46.5 2024 41.6 2025 37.2 Thereafter 103.2 Total lease payments* $ 303.6 Less interest 30.6 Present value of lease liabilities $ 273.0

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Nov. 28, 2020
Inventories [Abstract]
Schedule of Inventory, Current	(In millions) November 28, 2020 May 30, 2020 Finished goods $ 147.1 $ 151.1 Raw materials 43.9 46.2 Total $ 191.0 $ 197.3

Goodwill and Indefinite-lived_2

Goodwill and Indefinite-lived Intangibles (Tables)	6 Months Ended
	Nov. 28, 2020
Goodwill and Indefinite-lived Intangibles [Abstract]
Goodwill and Indefinite-lived Intangibles	Goodwill and other indefinite-lived intangible assets included in the Condensed Consolidated Balance Sheets consisted of the following as of November 28, 2020 and May 30, 2020: (In millions) Goodwill Indefinite-lived Intangible Assets May 30, 2020 $ 346.0 $ 92.8 Foreign currency translation adjustments 12.5 3.6 November 28, 2020 $ 358.5 $ 96.4

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	6 Months Ended
	Nov. 28, 2020
Employee Benefit Plans [Abstract]
Schedule of Defined Benefit Plans Disclosures	The following table summarizes the components of net periodic benefit cost for the Company's defined benefit pension plan for the three and six months ended: Three Months Ended Six Months Ended (In millions) November 28, 2020 November 30, 2019 November 28, 2020 November 30, 2019 Interest cost $ 0.7 $ 0.6 $ 1.3 $ 1.2 Expected return on plan assets (1.4) (1.1) (2.8) (2.2) Net amortization loss 1.6 0.9 3.3 1.7 Net periodic benefit cost $ 0.9 $ 0.4 $ 1.8 $ 0.7

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Nov. 28, 2020
Earnings Per Share [Abstract]
Schedule of Calculation of Numerator and Denominator in Earnings Per Share	The following table reconciles the numerators and denominators used in the calculations of basic and diluted earnings per share (EPS) for the three and six months ended: Three Months Ended Six Months Ended November 28, 2020 November 30, 2019 November 28, 2020 November 30, 2019 Numerators : Numerator for both basic and diluted EPS, Net earnings attributable to Herman Miller, Inc. - in millions $ 51.3 $ 78.6 $ 124.2 $ 126.8 Denominators : Denominator for basic EPS, weighted-average common shares outstanding 58,908,094 59,061,731 58,869,699 58,985,366 Potentially dilutive shares resulting from stock plans 359,304 340,270 174,229 333,616 Denominator for diluted EPS 59,267,398 59,402,001 59,043,928 59,318,982 Antidilutive equity awards not included in weighted-average common shares - diluted 301,002 86 1,067,979 43

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	6 Months Ended
	Nov. 28, 2020
Stock-Based Compensation [Abstract]
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award	The following table summarizes the stock-based compensation expense and related income tax effect for the three and six months ended: Three Months Ended Six Months Ended (In millions) November 28, 2020 November 30, 2019 November 28, 2020 November 30, 2019 Stock-based compensation expense $ 2.4 $ 2.8 $ 3.9 $ 5.4 Related income tax effect $ 0.6 $ 0.6 $ 0.9 $ 1.2

Income Taxes (Tables)

Income Taxes (Tables)	6 Months Ended
	Nov. 28, 2020
Income Tax Disclosure [Abstract]
Summary of Income Tax Contingencies	The Company's recorded liability for potential interest and penalties related to uncertain tax benefits was: (In millions) November 28, 2020 May 30, 2020 Liability for interest and penalties $ 1.0 $ 0.8 Liability for uncertain tax positions, current $ 2.3 $ 1.9

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Nov. 28, 2020
Fair Value Disclosures [Abstract]
Schedule of Long-term Debt Instruments	: (In millions) November 28, 2020 May 30, 2020 Carrying value $ 327.2 $ 591.3 Fair value $ 334.4 $ 594.0
Assets and Liabilities Measured at Fair Value and Recorded in Net Earnings	The following table sets forth financial assets and liabilities measured at fair value through net income and the respective pricing levels to which the fair value measurements are classified within the fair value hierarchy as of November 28, 2020 and May 30, 2020. (In millions) November 28, 2020 May 30, 2020 Financial Assets NAV Quoted Prices with Other NAV Quoted Prices with Other Cash equivalents: Money market funds $ 90.1 $ — $ 283.7 $ — Mutual funds - equity — 0.7 — 0.7 Foreign currency forward contracts — 1.4 — 1.1 Deferred compensation plan — 16.4 — 13.2 Total $ 90.1 $ 18.5 $ 283.7 $ 15.0 Financial Liabilities Foreign currency forward contracts $ — $ 0.3 $ — $ 0.8 Total $ — $ 0.3 $ — $ 0.8
Assets and Liabilities Measured at Fair Value and Recorded in Other Comprehensive Income	The following table sets forth financial assets and liabilities measured at fair value through other comprehensive income and the respective pricing levels to which the fair value measurements are classified within the fair value hierarchy as of November 28, 2020 and May 30, 2020. (In millions) November 28, 2020 May 30, 2020 Financial Assets Quoted Prices with Other Observable Inputs (Level 2) Quoted Prices with Other Observable Inputs (Level 2) Mutual funds - fixed income $ 6.5 $ 6.3 Total $ 6.5 $ 6.3 Financial Liabilities Interest rate swap agreement $ 23.5 $ 25.0 Total $ 23.5 $ 25.0
Unrealized Gain (Loss) on Investments	The following is a summary of the carrying and market values of the Company's fixed income mutual funds and equity mutual funds as of the dates indicated: November 28, 2020 May 30, 2020 (In millions) Cost Unrealized Market Cost Unrealized Market Mutual funds - fixed income $ 6.4 $ 0.1 $ 6.5 $ 6.2 $ 0.1 $ 6.3 Mutual funds - equity 0.5 0.2 0.7 0.6 0.1 0.7 Total $ 6.9 $ 0.3 $ 7.2 $ 6.8 $ 0.2 $ 7.0
Schedule of Interest Rate Derivatives	As of November 28, 2020, the Company had the following two outstanding interest rate swap agreements: (In millions) Notional Amount Forward Start Date Termination Date Effective Fixed Interest Rate September 2016 Interest Rate Swap $ 150.0 January 3, 2018 January 3, 2028 1.949 % June 2017 Interest Rate Swap $ 75.0 January 3, 2018 January 3, 2028 2.387 % The swaps above effectively converted indebtedness anticipated to be borrowed on the Company's revolving line of credit up to the notional amounts from a LIBOR-based floating interest rate plus applicable margin to an effective fixed interest rate plus applicable margin under the agreements as of the forward start date. As of November 28, 2020, the fair value of the Company’s two outstanding interest rate swap agreements was a liability of $23.5 million. The liability fair value was recorded within "Other liabilities" within the Condensed Consolidated Balance Sheets. The following table summarizes the effects of the interest rate swap agreements for the three and six months ended: Three Months Ended Six Months Ended (In millions) November 28, 2020 November 30, 2019 November 28, 2020 November 30, 2019 Gain (loss) recognized in Other comprehensive loss (effective portion) $ 0.9 $ 3.4 $ 1.2 $ (5.3) (Loss) gain reclassified from Accumulated other comprehensive loss into earnings $ (1.1) $ — $ (2.2) $ 0.1
Redeemable Noncontrolling Interest	Changes in the Company's redeemable noncontrolling interest in HAY for the six months ended November 28, 2020 are as follows: (In millions) November 28, 2020 Beginning Balance $ 50.4 Net income attributable to redeemable noncontrolling interests 2.0 Distributions to redeemable noncontrolling interests (2.7) Cumulative translation adjustments attributable to redeemable noncontrolling interests 2.8 Foreign currency translation adjustments 4.0 Ending Balance $ 56.5
Fair Value Measurements, Nonrecurring	The following table summarizes the valuation of the Company's assets measured at fair value on a non-recurring basis as of May 30, 2020: (In millions) May 30, 2020 Assets: Level 3 Indefinite-lived intangible assets $ 92.8 DWR right-of-use assets 110.9

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Nov. 28, 2020
Commitments and Contingencies Disclosure [Abstract]
Schedule of Product Warranty Liability	Three Months Ended Six Months Ended (In millions) November 28, 2020 November 30, 2019 November 28, 2020 November 30, 2019 Accrual Balance — beginning $ 60.3 $ 53.3 $ 59.2 $ 53.1 Accrual for warranty matters 2.7 6.3 7.3 11.6 Settlements and adjustments (3.2) (5.0) (6.7) (10.1) Accrual Balance — ending $ 59.8 $ 54.6 $ 59.8 $ 54.6

Short-Term Borrowings and Lon_2

Short-Term Borrowings and Long-Term Debt (Tables)	6 Months Ended
	Nov. 28, 2020
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	Short-term borrowings and long-term debt as of November 28, 2020 and May 30, 2020 consisted of the following obligations: (In millions) November 28, 2020 May 30, 2020 Debt securities, 6.0%, due March 1, 2021 $ 50.0 $ 50.0 Debt securities, 4.95%, due May 20, 2030 49.9 49.9 Syndicated revolving line of credit, due August 2024 225.0 490.0 Supplier financing program 2.3 1.4 Total debt $ 327.2 $ 591.3 Less: Current debt (52.3) (51.4) Long-term debt $ 274.9 $ 539.9
Schedule of Line of Credit Facilities	Available borrowings under the syndicated revolving line of credit were as follows for the periods indicated: (In millions) November 28, 2020 May 30, 2020 Syndicated revolving line of credit borrowing capacity $ 500.0 $ 500.0 Less: Borrowings under the syndicated revolving line of credit 225.0 490.0 Less: Outstanding letters of credit 9.8 9.4 Available borrowings under the syndicated revolving line of credit $ 265.2 $ 0.6

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	6 Months Ended
	Nov. 28, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table provides an analysis of the changes in accumulated other comprehensive loss for the six months ended November 28, 2020 and November 30, 2019: (In millions) Cumulative Translation Adjustments Pension and Other Post-retirement Benefit Plans Unrealized Interest Rate Swap Agreement Accumulated Other Comprehensive Loss Balance at May 30, 2020 $ (56.0) $ (59.2) $ 0.1 $ (18.9) $ (134.0) Other comprehensive income (loss), net of tax before reclassifications 32.3 — (0.1) 3.4 35.6 Reclassification from accumulated other comprehensive loss - Other, net — 3.0 — (2.2) 0.8 Tax benefit — (0.5) — — (0.5) Net reclassifications — 2.5 — (2.2) 0.3 Net current period other comprehensive income (loss) 32.3 2.5 (0.1) 1.2 35.9 Balance at November 28, 2020 $ (23.7) $ (56.7) $ — $ (17.7) $ (98.1) Balance at June 1, 2019 $ (48.3) $ (45.0) $ — $ (0.9) $ (94.2) Other comprehensive income (loss), net of tax before reclassifications 4.4 — — (5.4) (1.0) Reclassification from accumulated other comprehensive loss - Other, net — 1.7 — 0.1 1.8 Tax benefit — (0.3) — — (0.3) Net reclassifications — 1.4 — 0.1 1.5 Net current period other comprehensive income (loss) 4.4 1.4 — (5.3) 0.5 Balance at November 30, 2019 $ (43.9) (43.6) $ — $ (6.2) $ (93.7)

Operating Segments (Tables)

Operating Segments (Tables)	6 Months Ended
	Nov. 28, 2020	Nov. 30, 2019
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Schedule of Segment Reporting Information, by Segment	The following is a summary of certain key financial measures for the respective periods indicated: Three Months Ended Six Months Ended (In millions) November 28, 2020 November 30, 2019 November 28, 2020 November 30, 2019 Net Sales: North America Contract $ 323.1 $ 450.6 $ 661.9 $ 909.3 International Contract 168.1 118.2 321.7 232.0 Retail 135.1 105.4 269.4 203.9 Total $ 626.3 $ 674.2 $ 1,253.0 $ 1,345.2 Operating Earnings (Loss): North America Contract $ 35.6 $ 62.5 $ 87.4 $ 125.4 International Contract 23.4 12.8 48.4 25.9 Retail 22.6 (0.9) 51.8 (4.9) Corporate (10.6) (12.0) (21.2) (23.8) Total $ 71.0 $ 62.4 $ 166.4 $ 122.6	(In millions) November 28, 2020 May 30, 2020 Total Assets: North America Contract $ 760.9 $ 769.5 International Contract 558.8 512.5 Retail 323.7 310.9 Corporate 385.1 461.0 Total $ 2,028.5 $ 2,053.9

Restructuring Expense (Tables)

Restructuring Expense (Tables)	6 Months Ended
	Nov. 28, 2020
Restructuring and Related Activities [Abstract]
Restructuring and Related Costs	The following table provides an analysis of the changes in the restructuring costs reserve for the above plans for the six months ended November 28, 2020: (In millions) Severance and Employee-Related Exit or Disposal Activities Total May 30, 2020 $ 5.9 $ 0.8 $ 6.7 Restructuring Costs 0.1 (2.0) $ (1.9) Amounts Paid (2.1) (0.1) $ (2.2) Other* $ — $ 3.4 $ 3.4 November 28, 2020 $ 3.9 $ 2.1 $ 6.0 The following table provides an analysis of the changes in the restructuring cost reserve for the six months ended November 28, 2020: (In millions) Severance and Employee-Related May 30, 2020 $ 15.3 Restructuring Costs 3.1 Amounts Paid (16.0) November 28, 2020 $ 2.4 The following is a summary of restructuring expenses by segment for the periods indicated: Three Months Ended Six Months Ended (In millions) November 28, 2020 November 30, 2019 November 28, 2020 November 30, 2019 North America Contract $ 0.8 $ 3.8 $ 2.4 $ 5.5 International Contract 1.6 0.4 (1.2) 0.6 Total $ 2.4 $ 4.2 $ 1.2 $ 6.1

Revenue from Contracts with C_3

Revenue from Contracts with Customers - Revenue Disaggregated By Contract Type (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 28, 2020	Nov. 30, 2019	Nov. 28, 2020	Nov. 30, 2019
Disaggregation of Revenue [Line Items]
Net sales	$ 626.3	$ 674.2	$ 1,253	$ 1,345.2
Single performance obligation | Product revenue
Disaggregation of Revenue [Line Items]
Net sales	544.3	572.7	1,087.6	1,138.9
Multiple performance obligations | Product revenue
Disaggregation of Revenue [Line Items]
Net sales	77.2	95.8	155.7	195.7
Multiple performance obligations | Service revenue
Disaggregation of Revenue [Line Items]
Net sales	2.9	2.9	6	5.2
Other
Disaggregation of Revenue [Line Items]
Net sales	$ 1.9	$ 2.8	$ 3.7	$ 5.4

Revenue from Contracts with C_4

Revenue from Contracts with Customers - Revenue Disaggregated By Product Type And Reportable Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 28, 2020	Nov. 30, 2019	Nov. 28, 2020	Nov. 30, 2019
Disaggregation of Revenue [Line Items]
Net sales	$ 626.3	$ 674.2	$ 1,253	$ 1,345.2
North America Contract:
Disaggregation of Revenue [Line Items]
Net sales	323.1	450.6	661.9	909.3
North America Contract: | Workplace
Disaggregation of Revenue [Line Items]
Net sales	197.2	277.3	404.3	560.8
North America Contract: | Performance Seating
Disaggregation of Revenue [Line Items]
Net sales	74.7	108.6	152.2	220.5
North America Contract: | Lifestyle
Disaggregation of Revenue [Line Items]
Net sales	20.4	24.5	42.8	48
North America Contract: | Other
Disaggregation of Revenue [Line Items]
Net sales	30.8	40.2	62.6	80
International Contract:
Disaggregation of Revenue [Line Items]
Net sales	168.1	118.2	321.7	232
International Contract: | Workplace
Disaggregation of Revenue [Line Items]
Net sales	35.1	45.3	77	92.8
International Contract: | Performance Seating
Disaggregation of Revenue [Line Items]
Net sales	73.4	61.5	136.3	118.8
International Contract: | Lifestyle
Disaggregation of Revenue [Line Items]
Net sales	57.1	7.4	103.5	13.4
International Contract: | Other
Disaggregation of Revenue [Line Items]
Net sales	2.5	4	4.9	7
Retail:
Disaggregation of Revenue [Line Items]
Net sales	135.1	105.4	269.4	203.9
Retail: | Workplace
Disaggregation of Revenue [Line Items]
Net sales	2	1.1	4	2.1
Retail: | Performance Seating
Disaggregation of Revenue [Line Items]
Net sales	49.2	12.6	96.6	21.7
Retail: | Lifestyle
Disaggregation of Revenue [Line Items]
Net sales	83.6	91.7	168.4	180.1
Retail: | Other
Disaggregation of Revenue [Line Items]
Net sales	$ 0.3	$ 0	$ 0.4	$ 0

Revenue from Contracts with C_5

Revenue from Contracts with Customers - Contract Assets and Contract Liabilities (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Nov. 28, 2020	Nov. 28, 2020
Revenue from Contract with Customer [Abstract]
Contract with Customer, Liability, Revenue Recognized	$ 19.9	$ 26.7

Leases (Details)

Leases (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Nov. 28, 2020	Aug. 29, 2020	Nov. 30, 2019	Nov. 28, 2020	Nov. 30, 2019	May 30, 2020
Leases [Abstract]
Operating lease costs	$ 12.4		$ 12.6	$ 23.4	$ 25.4
Short-term lease costs	0.7		0.7	1.5	1.2
Variable lease costs*	2		2.2	3.6	4.4
Total	15.1		15.5	28.5	31
Supply Arrangement Variable Lease Costs	21.6		23.8	38.6	45.7
Operating Lease, Impairment Loss		$ 19.3
2021	25.7			25.7
2022	49.4			49.4
2023	46.5			46.5
2024	41.6			41.6
2025	37.2			37.2
Thereafter	103.2			103.2
Total lease payments*	303.6			303.6
Less interest	30.6			30.6
Present value of lease liabilities	273			273
Leases Not yet Commenced Future Payments	21.3			21.3
Lease liabilities, noncurrent	$ 205.7			$ 205.7		$ 178.8
Weighted Average Remaining Lease Term	7 years			7 years
Weighted Average Discount Rate, Percent	2.80%			2.80%
Operating cash flows used for operating leases	$ 11.6		13.3	$ 22.6	25.8
Right-of-use assets obtained in exchange for new liabilities	$ 36.9		$ 4	$ 49.2	$ 8.6

Acquisitions (Details)

Acquisitions (Details) - USD ($)	Dec. 02, 2019	Oct. 25, 2019	Jun. 07, 2018	Nov. 28, 2020	Aug. 29, 2020	Feb. 29, 2020	Nov. 30, 2019	Nov. 28, 2020	Nov. 30, 2019
Business Acquisition [Line Items]
Business Combination, Separately Recognized Transactions, Net Gains and Losses					$ 6,000,000
Contingent Equity Method Purchase								33.00%
Gain on consolidation of equity method investment				$ 0			$ 30,500,000	$ 0	$ 30,500,000
Business Acquisition, Pro Forma Revenue							718,400,000		1,439,200,000
Business Acquisition, Pro Forma Net Income (Loss)							$ 50,300,000		$ 99,300,000
HAY
Business Acquisition [Line Items]
Percentage of voting interests acquired	34.00%		33.00%
Purchase price	$ 79		$ 65.5
Payments to Acquire Intangible Assets			$ 4.8
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions	67.00%
Cash	$ 12,100,000
Working capital, net of cash and inventory step-up	12,300,000
Net property and equipment	900,000
Other assets	3,900,000
Other liabilities	(3,100,000)
Net assets acquired	26,100,000
Equity Method Investment Prior to Acquisition	67,800,000
Finite and Indefinite-Lived Intangible Assets Aquired	118,900,000
HAY | International Contract
Business Acquisition [Line Items]
Goodwill, Acquired During Period					101,100,000
HAY | Retail
Business Acquisition [Line Items]
Goodwill, Acquired During Period					10,000,000
HAY | Tradename
Business Acquisition [Line Items]
Tradename	$ 60,000,000
HAY | Inventory Step-up
Business Acquisition [Line Items]
Useful Life (years)	9 months 18 days
Fair Value	$ (3,400,000)
HAY | Backlog
Business Acquisition [Line Items]
Useful Life (years)	3 months 18 days
Fair Value	$ (1,700,000)
HAY | Deferred Revenue
Business Acquisition [Line Items]
Useful Life (years)	1 month 6 days
Fair Value	$ (2,200,000)
HAY | Product Development
Business Acquisition [Line Items]
Useful Life (years)	8 years
Fair Value	$ (22,000,000)
HAY | Customer Relationships
Business Acquisition [Line Items]
Useful Life (years)	9 years
Fair Value	$ (34,000,000)
naughtone
Business Acquisition [Line Items]
Percentage of voting interests acquired		47.50%
Purchase price		$ 45,900,000
Cash		5,100,000
Working capital, net of cash and inventory step-up		1,300,000
Net property and equipment		800,000
Net assets acquired		7,200,000
Gain on consolidation of equity method investment						$ 30,000,000
Equity Method Investment Prior to Acquisition		20,500,000
Finite and Indefinite-Lived Intangible Assets Aquired		38,900,000
naughtone | North America Contract
Business Acquisition [Line Items]
Goodwill, Acquired During Period					35,000,000
naughtone | International Contract
Business Acquisition [Line Items]
Goodwill, Acquired During Period					$ 22,500,000
naughtone | Tradename
Business Acquisition [Line Items]
Tradename		$ 8,500,000
naughtone | Inventory Step-up
Business Acquisition [Line Items]
Useful Life (years)		3 months 18 days
Fair Value		$ (200,000)
naughtone | Backlog
Business Acquisition [Line Items]
Useful Life (years)		3 months 18 days
Fair Value		$ (800,000)
naughtone | Customer Relationships
Business Acquisition [Line Items]
Useful Life (years)		9 years
Fair Value		$ (29,400,000)

Inventories - Schedule of Inven

Inventories - Schedule of Inventory, Current (Details) - USD ($) $ in Millions	Nov. 28, 2020	May 30, 2020
Inventories [Abstract]
Finished goods	$ 147.1	$ 151.1
Raw materials	43.9	46.2
Total	$ 191	$ 197.3

Goodwill and Indefinite-lived_3

Goodwill and Indefinite-lived Intangibles (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Aug. 29, 2020	Nov. 28, 2020	Nov. 28, 2020	May 30, 2020	Mar. 31, 2020
Goodwill [Roll Forward]
Goodwill, beginning	$ 346	$ 346
Foreign currency translation adjustments		12.5
Goodwill, ending		358.5
Indefinite-lived Intangible Assets [Roll Forward]
Indefinite-Lived Intangible Assets (Excluding Goodwill), beginning	92.8	92.8
Foreign currency translation adjustments		3.6
Indefinite-Lived Intangible Assets (Excluding Goodwill), ending		96.4
Goodwill, Impairment Loss	125.5
Goodwill, Impaired, Accumulated Impairment Loss			$ 125.3	$ 125.3
Goodwill	346	358.5	$ 358.5	346
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	53.3
Retail Reporting Unit [Member]
Indefinite-lived Intangible Assets [Roll Forward]
Goodwill, Impairment Loss	88.8
Maharam Reporting Unit [Member]
Indefinite-lived Intangible Assets [Roll Forward]
Goodwill, Impairment Loss	36.7
International Reporting Unit [Member]
Goodwill [Roll Forward]
Goodwill, beginning	163.7	163.7
Indefinite-lived Intangible Assets [Roll Forward]
Goodwill	$ 163.7	$ 163.7		$ 163.7
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount					17.00%

Employee Benefit Plans (Details

Employee Benefit Plans (Details) - Pension Plan - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 28, 2020	Nov. 30, 2019	Nov. 28, 2020	Nov. 30, 2019
Defined Benefit Plan Disclosure
Interest cost	$ 0.7	$ 0.6	$ 1.3	$ 1.2
Expected return on plan assets	(1.4)	(1.1)	(2.8)	(2.2)
Net amortization loss	1.6	0.9	3.3	1.7
Net periodic benefit cost	$ 0.9	$ 0.4	$ 1.8	$ 0.7

Earnings Per Share Earnings Per

Earnings Per Share Earnings Per Share - Schedule of Calculation of Numerator and Denominator in Earnings Per Share (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 28, 2020	Nov. 30, 2019	Nov. 28, 2020	Nov. 30, 2019
Earnings Per Share [Abstract]
Numerator for both basic and diluted EPS, Net earnings attributable to Herman Miller, Inc. - in millions	$ 51.3	$ 78.6	$ 124.2	$ 126.8
Denominator for basic EPS, weighted-average common shares outstanding	58,908,094	59,061,731	58,869,699	58,985,366
Potentially dilutive shares resulting from stock plans	359,304	340,270	174,229	333,616
Denominator for diluted EPS	59,267,398	59,402,001	59,043,928	59,318,982
Antidilutive equity awards not included in weighted-average common shares - diluted	301,002	86	1,067,979	43

Stock-Based Compensation (Detai

Stock-Based Compensation (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 28, 2020	Nov. 30, 2019	Nov. 28, 2020	Nov. 30, 2019
Stock-Based Compensation [Abstract]
Stock-based compensation expense	$ 2.4	$ 2.8	$ 3.9	$ 5.4
Related income tax effect	$ 0.6	$ 0.6	$ 0.9	$ 1.2

Income Taxes (Details)

Income Taxes (Details)	3 Months Ended		6 Months Ended
	Nov. 28, 2020	Nov. 30, 2019	Nov. 28, 2020	Nov. 30, 2019
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, Percent	23.50%	14.30%	22.60%	16.90%

Income Taxes - Schedule of Unce

Income Taxes - Schedule of Uncertain Tax Positions (Details) - USD ($) $ in Millions	Nov. 28, 2020	May 30, 2020
Income Tax Disclosure [Abstract]
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 1	$ 0.8
Deferred Tax Liabilities, Other	$ 2.3	$ 1.9

Fair Value Measurements Fair Va

Fair Value Measurements Fair Value Measurements - Schedule of Long-term Debt (Details) - USD ($) $ in Millions	Nov. 28, 2020	May 30, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value	$ 274.9	$ 539.9
Carrying value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value	327.2	591.3
Fair value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value	$ 334.4	$ 594

Fair Value Measurements - Fair

Fair Value Measurements - Fair Value Hierarchy (Details) - USD ($) $ in Millions	Nov. 28, 2020	May 30, 2020
Mutual funds - equity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mutual funds - equity	$ 0.7	$ 0.7
Mutual funds - fixed income
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mutual funds - fixed income	6.5	6.3
NAV | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mutual funds - equity	0	0
Deferred compensation plan	0	0
Total	90.1	283.7
Foreign currency forward contracts - liability	0	0
Total	0	0
Quoted Prices with Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation plan	16.4	13.2
Total	18.5	15
Total	0.3	0.8
Quoted Prices with Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Foreign currency forward contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency forward contracts - liability	0.3	0.8
Quoted Prices with Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Other Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mutual funds - fixed income	6.5	6.3
Quoted Prices with Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Other Liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mutual funds - fixed income	23.5	25
Quoted Prices with Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Other Liabilities | Interest rate swap agreement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap agreement - liability	23.5	25
Quoted Prices with Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Other Current Assets [Member] | Foreign currency forward contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency forward contracts - asset	1.4	1.1
Quoted Prices with Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Mutual funds - equity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mutual funds - equity	0.7	0.7
Quoted Prices with Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Mutual funds - fixed income
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mutual funds - fixed income	6.5	6.3
Money market funds | NAV | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	90.1	283.7
Money market funds | Quoted Prices with Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	$ 0	$ 0

Fair Value Measurements - Unrea

Fair Value Measurements - Unrealized Gain (Loss) on Investments (Details) - USD ($) $ in Millions	Nov. 28, 2020	May 30, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments, cost	$ 6.9	$ 6.8
Total investments, unrealized gain/(loss)	0.3	0.2
Total investments, market value	7.2	7
Mutual funds - fixed income
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mutual funds - fixed income, cost	6.4	6.2
Mutual funds - fixed income, unrealized gain/(loss)	0.1	0.1
Mutual funds - fixed income, market value	6.5	6.3
Mutual funds - equity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mutual funds - equity, cost	0.5	0.6
Mutual funds - equity, unrealized gain/(loss)	0.2	0.1
Mutual funds - equity, market value	$ 0.7	$ 0.7

Fair Value Measurements Interes

Fair Value Measurements Interest Rate Derivatives (Details) - USD ($)	Jun. 12, 2017	Sep. 13, 2016	Nov. 28, 2020	Nov. 30, 2019	Nov. 28, 2020	Nov. 30, 2019	Aug. 28, 2021	May 30, 2020
Derivative [Line Items]
Unrealized gains (losses) on interest rate swap agreement			$ 900,000	$ 3,400,000	$ 1,200,000	$ (5,300,000)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax			(1,100,000)	0
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net			0	$ 0
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Derivative [Line Items]
Reclassification from accumulated other comprehensive loss - Other, net					(2,200,000)	$ 100,000
Scenario, Forecast
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Gross Amount to be Transferred							$ (4,400,000)
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred							$ (3,300,000)
Interest rate swap agreement
Derivative [Line Items]
Derivative Asset, Notional Amount	$ 75,000,000	$ 150,000,000
Debt conversion rate	2.387%	1.949%
Interest rate swap agreement | Other Liabilities | Quoted Prices with Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring
Derivative [Line Items]
Interest rate swap agreement - liability			$ 23,500,000		$ 23,500,000			$ 25,000,000

Fair Value Measurements Fair _2

Fair Value Measurements Fair Value Measurements - Redeemable Noncontrolling Interests (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 28, 2020	Nov. 30, 2019	Nov. 28, 2020	Nov. 30, 2019
Redeemable Noncontrolling Interest [Line Items]
Net income attributable to redeemable noncontrolling interests	$ 1.5	$ 0	$ 2	$ (0.2)
Redeemable Noncontrolling Interests, Ending	56.5		56.5
Payments to Acquire Additional Interest in Subsidiaries			0	$ 20.3
HAY
Redeemable Noncontrolling Interest [Line Items]
Redeemable Noncontrolling Interests, Beginning			50.4
Net income attributable to redeemable noncontrolling interests			2
Distributions to redeemable noncontrolling interests			(2.7)
Cumulative translation adjustments attributable to redeemable noncontrolling interests			2.8
Foreign currency translation adjustments			4
Redeemable Noncontrolling Interests, Ending	$ 56.5		$ 56.5
Herman Miller Consumer Holdings [Member]
Redeemable Noncontrolling Interest [Line Items]
Payments to Acquire Additional Interest in Subsidiaries		$ 20.4

Fair Value Measurements Nonrecu

Fair Value Measurements Nonrecurring (Details) - USD ($) $ in Millions	3 Months Ended
	Aug. 29, 2020	Nov. 28, 2020	May 30, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Indefinite-lived intangibles		$ 96.4	$ 92.8
Right-of-use assets		$ 225.6	193.9
Goodwill, Impairment Loss	$ 125.5
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Indefinite-lived intangibles			92.8
Fair Value, Inputs, Level 3 [Member] | Design Within Reach [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Right-of-use assets			$ 110.9

Commitments and Contingencies -

Commitments and Contingencies - Schedule of Product Warranty Liability (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 28, 2020	Nov. 30, 2019	Nov. 28, 2020	Nov. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Warranty Length			12 years
Movement in Standard Product Warranty Accrual [Roll Forward]
Accrual Balance — beginning	$ 60.3	$ 53.3	$ 59.2	$ 53.1
Accrual for warranty matters	2.7	6.3	7.3	11.6
Settlements and adjustments	(3.2)	(5)	(6.7)	(10.1)
Accrual Balance — ending	$ 59.8	$ 54.6	$ 59.8	$ 54.6

Commitments and Contingencies C

Commitments and Contingencies Commitments and Contingencies (Details) - USD ($) $ in Millions	6 Months Ended
	Nov. 28, 2020	May 30, 2020
Performance Guarantee
Loss Contingencies [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 5.5
Guarantor Obligations, Current Carrying Value	$ 0	$ 0
Performance Guarantee | Minimum
Loss Contingencies [Line Items]
Guarantor Obligations, Term	one year
Performance Guarantee | Maximum
Loss Contingencies [Line Items]
Guarantor Obligations, Term	three years
Financial Standby Letter of Credit
Loss Contingencies [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 9.8
Guarantor Obligations, Current Carrying Value	$ 0	$ 0

Schedule of Long Term Debt (Det

Schedule of Long Term Debt (Details) - USD ($) $ in Millions	Nov. 28, 2020	May 30, 2020
Debt Instrument [Line Items]
Supplier financing program	$ 2.3	$ 1.4
Total debt	327.2	591.3
Less: Current debt	(52.3)	(51.4)
Long-term debt	274.9	539.9
Syndicated revolving line of credit, due August 2024
Debt Instrument [Line Items]
Syndicated revolving line of credit, due August 2024	225	490
Debt securities, 6.0%, due March 1, 2021
Debt Instrument [Line Items]
Debt securities	50	50
Debt securities, 4.95%, due May 20, 2030
Debt Instrument [Line Items]
Debt securities	$ 49.9	$ 49.9

Schedule of Line of Credit Faci

Schedule of Line of Credit Facilities (Details) - USD ($) $ in Millions	3 Months Ended
	Nov. 28, 2020	May 30, 2020
Line of Credit Facility [Line Items]
Letters of Credit Outstanding, Amount	$ 9.8	$ 9.4
Syndicated revolving line of credit, due August 2024
Line of Credit Facility [Line Items]
Revolving line of credit, maximum borrowing capacity	500	500
Syndicated revolving line of credit, due August 2024	225	490
Line of Credit Facility, Remaining Borrowing Capacity	265.2	0.6
Revolving line of credit, allowed increase in borrowing capacity		$ 250
Repayments of Lines of Credit	$ 265

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 28, 2020	Nov. 30, 2019	Nov. 28, 2020	Nov. 30, 2019
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	$ 746.4	$ 745.3	$ 643	$ 719.2
Foreign currency translation adjustments	4.9	13.7	35.1	4.4
Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax	0	0		0
Net current period other comprehensive income (loss)	7.2	17.8	38.7	0.5
Balance at end of period	798.3	844.6	798.3	844.6
Cumulative Translation Adjustments
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period			(56)	(48.3)
Foreign currency translation adjustments			32.3	4.4
Reclassification from accumulated other comprehensive loss - Other, net			0	0
Tax benefit			0	0
Net reclassifications			0	0
Net current period other comprehensive income (loss)			32.3	4.4
Balance at end of period	(23.7)	(43.9)	(23.7)	(43.9)
Pension and Other Post-retirement Benefit Plans
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period			(59.2)	(45)
Other comprehensive income (loss), net of tax before reclassifications			0	0
Reclassification from accumulated other comprehensive loss - Other, net			3	1.7
Tax benefit			(0.5)	(0.3)
Net reclassifications			2.5	1.4
Net current period other comprehensive income (loss)			2.5	1.4
Balance at end of period	(56.7)	(43.6)	(56.7)	(43.6)
Unrealized Gains on Available-for-sale Securities
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period			0.1	0
Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax			(0.1)
Reclassification from accumulated other comprehensive loss - Other, net			0	0
Tax benefit			0	0
Net reclassifications			0	0
Net current period other comprehensive income (loss)			(0.1)	0
Balance at end of period	0	0	0	0
Interest Rate Swap Agreement
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period			(18.9)	(0.9)
Other comprehensive income (loss), net of tax before reclassifications			3.4	(5.4)
Reclassification from accumulated other comprehensive loss - Other, net			(2.2)	0.1
Tax benefit			0	0
Net reclassifications			(2.2)	0.1
Net current period other comprehensive income (loss)			1.2	(5.3)
Balance at end of period	(17.7)	(6.2)	(17.7)	(6.2)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	(105.1)	(111.5)	(134)	(94.2)
Other comprehensive income (loss), net of tax before reclassifications			35.6	(1)
Reclassification from accumulated other comprehensive loss - Other, net			0.8	1.8
Tax benefit			(0.5)	(0.3)
Net reclassifications			0.3	1.5
Net current period other comprehensive income (loss)			35.9	0.5
Balance at end of period	$ (98.1)	$ (93.7)	$ (98.1)	$ (93.7)

Operating Segments (Details)

Operating Segments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 28, 2020	Nov. 30, 2019	Nov. 28, 2020	Nov. 30, 2019	May 30, 2020
Segment Reporting Information
Net sales	$ 626.3	$ 674.2	$ 1,253	$ 1,345.2
Operating Earnings (Loss):	71	62.4	166.4	122.6
Total Assets	2,028.5		2,028.5		$ 2,053.9
North America Contract
Segment Reporting Information
Net sales	323.1	450.6	661.9	909.3
Operating Earnings (Loss):	35.6	62.5	87.4	125.4
Total Assets	760.9		760.9		769.5
International Contract
Segment Reporting Information
Net sales	168.1	118.2	321.7	232
Operating Earnings (Loss):	23.4	12.8	48.4	25.9
Total Assets	558.8		558.8		512.5
Retail
Segment Reporting Information
Net sales	135.1	105.4	269.4	203.9
Operating Earnings (Loss):	22.6	(0.9)	51.8	(4.9)
Total Assets	323.7		323.7		310.9
Corporate
Segment Reporting Information
Operating Earnings (Loss):	(10.6)	$ (12)	(21.2)	$ (23.8)
Total Assets	$ 385.1		$ 385.1		$ 461

Restructuring Expense (Details)

Restructuring Expense (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended		15 Months Ended	42 Months Ended
	Nov. 28, 2020	Aug. 29, 2020	Nov. 30, 2019	Nov. 28, 2020	Nov. 30, 2019	Aug. 29, 2020	Nov. 28, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	$ 2.4		$ 4.2	$ 1.2	$ 6.1
Gain (Loss) on Disposition of Assets		$ 3.4
International Contract
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	1.6		0.4	(1.2)	0.6
North America Contract
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	0.8		$ 3.8	2.4	$ 5.5
Facilities Consolidation Plan | International Contract
Restructuring Cost and Reserve [Line Items]
Restructuring Costs and Asset Impairment Charges				1.9			$ 5.9
Facilities Consolidation Plan | International Contract | Exit or Disposal Activities
Restructuring Cost and Reserve [Line Items]
Effect on Future Earnings, Amount				3
Nemschoff Plan | North America Contract
Restructuring Cost and Reserve [Line Items]
Restructuring Costs				0.1
Restructuring and Related Cost, Expected Cost	5			5			5
Restructuring and Related Cost, Cost Incurred to Date	3.1			3.1			3.1
North American Sales and Global Product Teams Plan | Retail
Restructuring Cost and Reserve [Line Items]
Restructuring Costs and Asset Impairment Charges							2.6
Retail plan | Retail | Severance and Employee-Related
Restructuring Cost and Reserve [Line Items]
Restructuring Costs						$ 2.2
May 2020 Restructuring Plan | Severance and Employee-Related
Restructuring Cost and Reserve [Line Items]
Effect on Future Earnings, Amount				40
Restructuring Costs				3.1
Restructuring and Related Cost, Cost Incurred to Date	$ 18.3			$ 18.3			$ 18.3

Restructuring Expense - Schedul

Restructuring Expense - Schedule of Restructuring Rollforward (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Nov. 28, 2020	Aug. 29, 2020	Nov. 30, 2019	Nov. 28, 2020	Nov. 30, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	$ 2.4		$ 4.2	$ 1.2	$ 6.1
Gain (Loss) on Disposition of Assets		$ (3.4)
International Contract
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	1.6		0.4	(1.2)	0.6
North America Contract
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	0.8		$ 3.8	2.4	$ 5.5
Other Restructuring Plans
Restructuring Cost and Reserve [Line Items]
Beginning Balance		6.7		6.7
Restructuring Costs				(1.9)
Amounts Paid				(2.2)
Gain (Loss) on Disposition of Assets				3.4
Ending Balance	6			6
Severance and Employee-Related | Other Restructuring Plans
Restructuring Cost and Reserve [Line Items]
Beginning Balance		5.9		5.9
Restructuring Costs				0.1
Amounts Paid				(2.1)
Ending Balance	3.9			3.9
Severance and Employee-Related | May 2020 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Beginning Balance		15.3		15.3
Restructuring Costs				3.1
Amounts Paid				(16)
Ending Balance	2.4			2.4
Exit or Disposal Activities | Other Restructuring Plans
Restructuring Cost and Reserve [Line Items]
Beginning Balance		$ 0.8		0.8
Restructuring Costs				(2)
Amounts Paid				(0.1)
Gain (Loss) on Disposition of Assets				3.4
Ending Balance	$ 2.1			$ 2.1

Variable Interest Entities (Det

Variable Interest Entities (Details) - USD ($) $ in Millions	Nov. 28, 2020	May 30, 2020
Other Noncurrent Assets | Variable Interest Entity, Not Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Long-term notes receivable	$ 1.3	$ 1.5