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	$ 0.0
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	48.0
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	$ 0.0					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)	$ 0.0	(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	0.0
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	0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings attributable to Herman Miller, Inc.	164.5
Balance at end of period (in shares) at Feb. 29, 2020		58,785,228
Balance at end of period at Feb. 29, 2020	836.8	$ 11.8	86.9	839.9	(101.5)	(0.3)	836.8	0.0
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	0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings attributable to Herman Miller, Inc.				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	0.1				0.1
Restricted and performance stock units released (in shares)		3,653
Restricted and performance stock units released	0.0	$ 0.0					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	(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	0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings attributable to Herman Miller, Inc.	37.7			37.7			37.7
Net earnings, including portion attributable to nonredeemable noncontrolling interests	37.7							0.0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(7.8)				(7.8)		(7.8)
Stock-based compensation expense	2.5		2.5				2.5	0.0
Exercise of stock options (in shares)		35,690
Exercise of stock options	1.1		1.1				1.1
Restricted and performance stock units released (in shares)		87,461
Restricted and performance stock units released	0.2		0.2				0.2
Employee stock purchase plan issuances (in shares)		20,021
Employee stock purchase plan issuances	(0.6)		(0.6)				(0.6)
Repurchase and retirement of common stock (in shares)		(440,954)
Repurchase and retirement of common stock	(17.9)		(17.9)				(17.9)
Directors' fees (shares)		7,769
Directors' fees	$ 0.3		0.3				0.3
Dividends declared per share	$ 0.21
Dividends declared	$ (24.5)			(24.5)			(24.5)
Deferred compensation plan	0.0		(0.3)			0.3	0.0
Balance at end of period (in shares) at Feb. 29, 2020		58,785,228
Balance at end of period at Feb. 29, 2020	836.8	$ 11.8	86.9	839.9	(101.5)	(0.3)	836.8	0.0
Balance at beginning of period (in shares) at May. 30, 2020		58,793,275
Balance at beginning of period at May. 30, 2020	643.0	$ 11.8	81.6	683.9	(134.0)	(0.3)	643.0	0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings attributable to Herman Miller, Inc.				73.0			73.0
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	0.2				0.2
Restricted and performance stock units released (in shares)		106,607
Restricted and performance stock units released	0.0	$ 0.0					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	(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	0.0
Balance at beginning of period (in shares) at May. 30, 2020		58,793,275
Balance at beginning of period at May. 30, 2020	643.0	$ 11.8	81.6	683.9	(134.0)	(0.3)	643.0	0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings attributable to Herman Miller, Inc.	$ 165.7
Balance at end of period (in shares) at Feb. 27, 2021	59,001,135
Balance at end of period at Feb. 27, 2021	$ 850.1	$ 11.8	90.8	827.5	(79.8)	(0.2)	850.1	0.0
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	0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings attributable to Herman Miller, Inc.				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	7.0				7.0		7.0
Stock-based compensation expense	2.4		2.4				2.4
Exercise of stock options (in shares)		54,771
Exercise of stock options	1.9	$ 0.0	1.9				1.9
Restricted and performance stock units released (in shares)		3,688
Restricted and performance stock units released	0.0	$ 0.0					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	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
Balance at end of period at Nov. 28, 2020	798.3	$ 11.8	87.8	797.1	(98.1)	(0.3)	798.3	0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings attributable to Herman Miller, Inc.	41.5			41.5			41.5
Net earnings, including portion attributable to nonredeemable noncontrolling interests	41.5
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	18.3				18.3		18.3
Stock-based compensation expense	2.2		2.2				2.2
Exercise of stock options (in shares)		10,628
Exercise of stock options	0.1		0.1				0.1
Restricted and performance stock units released (in shares)		1,736
Restricted and performance stock units released	0.1		0.1				0.1
Employee stock purchase plan issuances (in shares)		17,709
Employee stock purchase plan issuances	(0.6)		(0.6)				(0.6)
Repurchase and retirement of common stock (in shares)		(579)
Repurchase and retirement of common stock	$ 0.0		0.0				0.0
Dividends declared per share	$ 0.1875
Dividends declared	$ (11.1)			(11.1)			(11.1)
Deferred compensation plan	$ 0.1		0.0			0.1	0.1
Balance at end of period (in shares) at Feb. 27, 2021	59,001,135
Balance at end of period at Feb. 27, 2021	$ 850.1	$ 11.8	$ 90.8	$ 827.5	$ (79.8)	$ (0.2)	$ 850.1	$ 0.0