v3.26.1
Operating Segments - Schedule of Segment Reporting Information (Details) - USD ($)
$ in Millions
 12 Months Ended
May 30, 2026
May 31, 2025
Jun. 01, 2024
Segment Reporting      
Net sales $ 3,841.7 $ 3,669.9 $ 3,628.4
Adjusted operating earnings 238.4 248.7 262.2
Net earnings attributable to redeemable noncontrolling interests 4.2 3.7 2.3
Equity (loss) earnings from nonconsolidated affiliate, net of tax (0.1) 0.3 (0.4)
Income tax expense 32.4 11.6 14.7
Other expense (income), net 4.3 1.1 (2.6)
Interest and other investment income (4.1) (5.4) (6.1)
Interest expense 69.9 76.7 76.2
Restructuring charges 13.5 14.8 30.8
Integration charges 0.0 28.3 23.5
Amortization of Knoll purchased intangibles 24.0 24.1 23.9
Impairment charges 0.0 130.0 16.8
Knoll pension plan termination charges 0.0 1.0 0.0
CEO Transition Costs 2.6 0.0 0.0
Net earnings (loss) attributable to MillerKnoll, Inc. 91.5 (36.9) 82.3
Depreciation and amortization: 148.3 140.5 155.1
Capital expenditures: 122.3 107.6 78.4
Operating Segments      
Segment Reporting      
Adjusted operating earnings 304.1 316.4 314.2
Corporate      
Segment Reporting      
Adjusted operating expenses 65.7 67.7 52.0
Adjusted operating earnings (65.7) (67.7) (52.0)
North America Contract: | Operating Segments      
Segment Reporting      
Net sales 2,061.2 1,965.2 1,922.3
Adjusted cost of sales 1,306.3 1,262.4 1,224.5
Adjusted operating expenses 541.8 511.8 520.6
Adjusted operating earnings 213.1 191.0 177.2
Depreciation and amortization: 87.9 83.3 96.9
Capital expenditures: 57.7 58.7 51.4
International Contract: | Operating Segments      
Segment Reporting      
Net sales 674.0 660.0 645.6
Adjusted cost of sales 431.2 419.2 412.5
Adjusted operating expenses 184.5 167.3 160.7
Adjusted operating earnings 58.3 73.5 72.4
Depreciation and amortization: 23.9 22.2 28.0
Capital expenditures: 20.5 19.9 7.0
Global Retail: | Operating Segments      
Segment Reporting      
Net sales 1,106.5 1,044.7 1,060.5
Adjusted cost of sales 613.8 565.2 571.9
Adjusted operating expenses 460.0 427.6 424.0
Adjusted operating earnings 32.7 51.9 64.6
Depreciation and amortization: 36.5 35.0 30.2
Capital expenditures: $ 44.1 $ 29.0 $ 20.0