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Stock-Based Compensation - Narrative (Details)
 12 Months Ended 29 Months Ended
Jul. 19, 2021
Jun. 01, 2024
USD ($)
$ / shares
shares
Jun. 03, 2023
USD ($)
$ / shares
shares
May 28, 2022
USD ($)
$ / shares
shares
Jun. 01, 2024
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award          
Stock-based compensation cost not yet recognized | $   $ 14,800,000     $ 14,800,000
Weighted-average period over which this amount is expected to be recognized (in years)   1 year 2 months 12 days      
Employee stock purchase plan issuances (in shares)   139,211 185,551 87,562  
Cash received from the exercise of stock options | $   $ 1,700,000      
IRS statutory compensation ceiling | $   $ 345,000      
Knoll Inc. 2020 Long Term Incentive Plan          
Share-based Compensation Arrangement by Share-based Payment Award          
Shares available for issuance ( in shares)   8,141,266     8,141,266
Executive Equalization Retirement Plan | Maximum          
Share-based Compensation Arrangement by Share-based Payment Award          
Cash awards granted (as percent)   50.00%      
Percentage of incentive cash bonus   100.00%      
Employee Stock Purchase Program          
Share-based Compensation Arrangement by Share-based Payment Award          
Number of shares authorized for issuance (in shares)   16,464,945     16,464,945
Reserved for purchase by plan participants (as percent)   85.00%     85.00%
Employee Stock Purchase Program | Miller Knoll Inc. Employee Stock Purchase Plan          
Share-based Compensation Arrangement by Share-based Payment Award          
Number of shares authorized for issuance (in shares)   5,500,000     5,500,000
Shares available for issuance ( in shares)   1,607,130     1,607,130
Employee Stock Purchase Program | MillerKnoll, Inc. 2020 Long Term Incentive Plan          
Share-based Compensation Arrangement by Share-based Payment Award          
Number of shares authorized for issuance (in shares)   7,182,670     7,182,670
Employee Stock Purchase Program | MillerKnoll, Inc. 2023 Long-Term Incentive Plan          
Share-based Compensation Arrangement by Share-based Payment Award          
Number of shares authorized for issuance (in shares)   8,300,000     8,300,000
Employee Stock Purchase Program | Knoll Inc. 2021 Stock Incentive Plan          
Share-based Compensation Arrangement by Share-based Payment Award          
Number of shares authorized for issuance (in shares)   982,275     982,275
Shares available for issuance ( in shares)   168,682     168,682
Stock Option          
Share-based Compensation Arrangement by Share-based Payment Award          
Weighted-average period over which this amount is expected to be recognized (in years)   1 year 2 months 26 days      
Intrinsic value of options exercised | $   $ 400,000 $ 400,000 $ 1,800,000  
Stock Option | Director          
Share-based Compensation Arrangement by Share-based Payment Award          
Expiration period (in years)   10 years      
Conversion ratio to common stock   1      
Director fees to be paid in form of equity (as percent)         50.00%
Stock Option | Minimum          
Share-based Compensation Arrangement by Share-based Payment Award          
Vesting period (in years)   1 year      
Stock Option | Maximum          
Share-based Compensation Arrangement by Share-based Payment Award          
Vesting period (in years)   3 years      
Expiration period (in years)   10 years      
Restricted Stock Units          
Share-based Compensation Arrangement by Share-based Payment Award          
Weighted-average period over which this amount is expected to be recognized (in years)   1 year 3 months 18 days      
Vesting period (in years) 3 years 3 years      
Conversion ratio to common stock 1 1      
Fair value of the shares that vested | $   $ 7,000,000.0      
Share-based payment arrangement, cash used to settle award | $   $ 7,800      
Granted (in dollar per share) | $ / shares   $ 17.30 $ 27.76 $ 44.25  
Weighted-average fair value of restricted stock awards granted (in dollar per share) | $ / shares   $ 21.92 $ 31.83   $ 21.92
Granted (in shares)   719,780      
Released (in shares)   327,894      
Deferred stock units outstanding (in shares)   930,647 684,341   930,647
Restricted Stock Units | After year one          
Share-based Compensation Arrangement by Share-based Payment Award          
Graded vesting (as percent)   25.00%      
Restricted Stock Units | After year two          
Share-based Compensation Arrangement by Share-based Payment Award          
Graded vesting (as percent)   25.00%      
Restricted Stock Units | After year three          
Share-based Compensation Arrangement by Share-based Payment Award          
Graded vesting (as percent)   50.00%      
Restricted Stock Units | Knoll Award          
Share-based Compensation Arrangement by Share-based Payment Award          
Share-based payment arrangement, cash used to settle award | $   $ 65,000      
Performance Share Units          
Share-based Compensation Arrangement by Share-based Payment Award          
Weighted-average period over which this amount is expected to be recognized (in years)   5 months 19 days      
Expiration period (in years) 5 years 3 years      
Conversion ratio to common stock 1 1      
Fair value of the shares that vested | $   $ 2,700,000      
Granted (in dollar per share) | $ / shares   $ 18.39 $ 27.30 $ 43.06  
Total market value of shares released in period | $   $ 21,000      
Weighted-average fair value of restricted stock awards granted (in dollar per share) | $ / shares   $ 23.91 $ 34.41   $ 23.91
Granted (in shares)   253,623      
Released (in shares)   121,043      
Deferred stock units outstanding (in shares)   442,353 350,971   442,353
Performance Share Units | Knoll Award          
Share-based Compensation Arrangement by Share-based Payment Award          
Share-based payment arrangement, cash used to settle award | $   $ 178,900      
Restricted Stock Awards          
Share-based Compensation Arrangement by Share-based Payment Award          
Vesting period (in years)   3 years      
Conversion ratio to common stock 1        
Fair value of the shares that vested | $   $ 1,100,000      
Granted (in dollar per share) | $ / shares   $ 0      
Weighted-average fair value of restricted stock awards granted (in dollar per share) | $ / shares   $ 0 $ 44.36   $ 0
Granted (in shares)   0 0 0  
Released (in shares)   33,760      
Deferred stock units outstanding (in shares)   0 34,743   0
Restricted Stock Awards | Knoll Award          
Share-based Compensation Arrangement by Share-based Payment Award          
Share-based payment arrangement, cash used to settle award | $   $ 73,000      
Deferred Stock Units | Director          
Share-based Compensation Arrangement by Share-based Payment Award          
Fair value of the shares that vested | $   $ 400,000      
Granted (in dollar per share) | $ / shares   $ 25.47 $ 22.73 $ 37.34  
Granted (in shares)   16,490 25,230 15,664  
Released (in shares)   9,027      
Deferred stock units outstanding (in shares)   50,682     50,682
Deferred stock units, vested, aggregate intrinsic fair value | $   $ 1,400,000     $ 1,400,000