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Fair Value (Details) £ in Millions		1 Months Ended			3 Months Ended	12 Months Ended
	Dec. 02, 2019	Aug. 31, 2019 USD ($)	Jun. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Jun. 01, 2019 USD ($)	May 29, 2021 USD ($)	May 30, 2020 USD ($)	Jun. 01, 2019 USD ($)	May 29, 2021 GBP (£)	May 30, 2020 GBP (£)	Jun. 07, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Derivative liability notional amount						$ 61,900,000	$ 52,600,000
Derivative asset notional amount | £									£ 44.5	£ 27.5
Interest rate swap								$ (12,800,000)
Gain (loss) recognized for hedge ineffectiveness						0	0	0
Pre-tax gain (loss) expected to be reclassified						(4,500,000)
Gain (loss) expected to be reclassified						(3,400,000)
Gain on fair value adjustments					$ 2,100,000	0	0	2,100,000
Carrying value of investments					3,600,000			3,600,000
Redeemable noncontrolling interests						$ 77,000,000.0	50,400,000
Remaining equity that can be purchased (percent)						33.00%
Impairment charges							53,300,000
Interest Rate Swap Agreement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Interest rate swap						$ 12,600,000	(17,200,000)
Unrealized holding (losses) gains on securities								(12,800,000)
Herman Miller Consumer Holdings
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Redeemable noncontrolling interests					20,600,000	$ 0	0	20,600,000
Cash paid for redemptions		$ 20,400,000						10,100,000
Herman Miller Consumer Holdings
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Redeemable noncontrolling interests					$ 20,600,000			$ 20,600,000
Minority ownership (percent)					5.00%			5.00%
Foreign Exchange Forward | Not Designated as Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Derivative term						30 days
Interest rate swap agreement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Derivative asset notional amount			$ 75,000,000	$ 150,000,000
Debt conversion, fixed rate (percent)			238.70%	1.949%
Interest rate swap agreement | Other Liabilities | Quoted Prices with Other Observable Inputs (Level 2) | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Interest rate swap agreement							25,000,000.0
Interest rate swap agreement - liability						$ 14,400,000	25,000,000.0
Relief from Royalty Approach | Minimum | Discount Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Measurement inputs (percent)						12.00%
Relief from Royalty Approach | Minimum | Royalty Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Measurement inputs (percent)						2.00%
Relief from Royalty Approach | Maximum | Discount Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Measurement inputs (percent)						14.00%
Impairment charges							$ 53,300,000
Relief from Royalty Approach | Maximum | Royalty Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Measurement inputs (percent)						3.00%
HAY A/S
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Outstanding equity interest acquired (percent)	34.00%										33.00%
Ownership interest (percent)	67.00%

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