Description of Business and Basis of Presentation	3 Months Ended
Aug. 29, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business and Basis of Presentation	Description of Business and Basis of Presentation MillerKnoll, Inc. (the "Company") researches, designs, manufactures and distributes interior furnishings for use in various environments including residential, office, healthcare, and educational settings and provides related services that support organizations and individuals all over the world. The Company's products are sold primarily through the following channels: independent contract furniture dealers, direct customer sales, owned and independent retailers, direct-mail catalogs, and the Company's eCommerce platforms. MillerKnoll is a collective of globally recognized design brands known for working with some of the most well-known and respected designers in the world. Combined, the Company represents over 100 years of design research and exploration in service of humanity. Within the industries in which the Company operates, Herman Miller® and Knoll®, along with Colebrook Bosson Saunders, Design Within Reach®, Edelman®, FilzFelt®, Geiger®, HAY®, Holly Hunt®, KnollTextiles®, Maharam®, Muuto®, NaughtOne®, and Spinneybeck® are acknowledged as leading brands that inspire architects and designers to create their best design solutions. This portfolio has enabled MillerKnoll to connect with new audiences, channels, geographies, and product categories. Leveraging the collective brand equity of MillerKnoll across the lines of business is an important element of the Company's business strategy. Basis of Presentation The Condensed Consolidated Financial Statements have been prepared by MillerKnoll, Inc. 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 "MillerKnoll," "we," "our," "Company" and similar references are to MillerKnoll, 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 August 29, 2026. Operating results for the three months ended August 29, 2026, are not necessarily indicative of the results that may be expected for the year ending May 29, 2027 ("fiscal 2027"). These Condensed Consolidated Financial Statements should 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, 2026 ("fiscal 2026"). All intercompany transactions have been eliminated in the Condensed Consolidated Financial Statements. The Company's fiscal year is the 52 or 53 week period ending on the Saturday closest to May 31. The fiscal year ending May 29, 2027 ("fiscal 2027") and the fiscal year ended May 30, 2026 ("fiscal 2026") both contain 52 weeks. IEEPA Tariff Refund Claims During 2025, certain tariffs were imposed pursuant to actions taken under the International Emergency Economic Powers Act ("IEEPA"). Subsequent legal proceedings challenged the validity of those tariffs, and court rulings issued during fiscal 2026 created the potential for importers to seek refunds of IEEPA tariffs previously paid. The Company submitted claims for refunds on substantially all IEEPA tariffs paid that may be eligible for recovery. During the first quarter of fiscal 2027, the Company received refunds related to previously incurred IEEPA tariffs. As a result, the Company recognized a benefit of approximately $16.5 million, which is reflected in Cost of sales during the quarter ended August 29, 2026. As of August 29, 2026, the Company continues to evaluate and pursue additional refund claims related to IEEPA tariffs. Any amounts associated with claims that have not yet been received or are not otherwise considered realizable have not been recognized.

MillerKnoll, Inc. (the "Company") researches, designs, manufactures and distributes interior furnishings for use in various environments including residential, office, healthcare, and educational settings and provides related services that support organizations and individuals all over the world. The Company's products are sold primarily through the following channels: independent contract furniture dealers, direct customer sales, owned and independent retailers, direct-mail catalogs, and the Company's eCommerce platforms.

MillerKnoll is a collective of globally recognized design brands known for working with some of the most well-known and respected designers in the world. Combined, the Company represents over 100 years of design research and exploration in service of humanity. Within the industries in which the Company operates, Herman Miller® and Knoll®, along with Colebrook Bosson Saunders, Design Within Reach®, Edelman®, FilzFelt®, Geiger®, HAY®, Holly Hunt®, KnollTextiles®, Maharam®, Muuto®, NaughtOne®, and Spinneybeck® are acknowledged as leading brands that inspire architects and designers to create their best design solutions. This portfolio has enabled MillerKnoll to connect with new audiences, channels, geographies, and product categories. Leveraging the collective brand equity of MillerKnoll across the lines of business is an important element of the Company's business strategy.

The Condensed Consolidated Financial Statements have been prepared by MillerKnoll, Inc. 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 "MillerKnoll," "we," "our," "Company" and similar references are to MillerKnoll, 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 August 29, 2026. Operating results for the three months ended August 29, 2026, are not necessarily indicative of the results that may be expected for the year ending May 29, 2027 ("fiscal 2027"). These Condensed Consolidated Financial Statements should 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, 2026 ("fiscal 2026"). All intercompany transactions have been eliminated in the Condensed Consolidated Financial Statements.

The Company's fiscal year is the 52 or 53 week period ending on the Saturday closest to May 31. The fiscal year ending May 29, 2027 ("fiscal 2027") and the fiscal year ended May 30, 2026 ("fiscal 2026") both contain 52 weeks.

During 2025, certain tariffs were imposed pursuant to actions taken under the International Emergency Economic Powers Act ("IEEPA"). Subsequent legal proceedings challenged the validity of those tariffs, and court rulings issued during fiscal 2026 created the potential for importers to seek refunds of IEEPA tariffs previously paid. The Company submitted claims for refunds on substantially all IEEPA tariffs paid that may be eligible for recovery.

During the first quarter of fiscal 2027, the Company received refunds related to previously incurred IEEPA tariffs. As a result, the Company recognized a benefit of approximately $16.5 million, which is reflected in Cost of sales during the quarter ended August 29, 2026.