Basis of Presentation	9 Months Ended
	Oct. 01, 2022
Accounting Changes and Error Corrections [Abstract]
Basis of Presentation	Basis of PresentationThe accompanying unaudited, condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles 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 notes required by generally accepted accounting principles for complete financial statements. The January 1, 2022, consolidated balance sheet included in this Form 10-Q was derived from audited financial statements but does not include all disclosures required by generally accepted accounting principles. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair statement have been included. Operating results for the nine-month period ended October 1, 2022, are not necessarily indicative of the results expected for the fiscal year ending December 31, 2022. For further information, refer to the consolidated financial statements and accompanying notes included in HNI Corporation's (the "Corporation") Annual Report on Form 10-K for the fiscal year ended January 1, 2022. Certain reclassifications have been made within the interim financial information to conform to the current presentation. All dollar amounts presented are in millions, except per share data or where otherwise indicated. Amounts may not sum due to rounding.