Cover Page - USD ($)	12 Months Ended
	Dec. 28, 2024	Jan. 31, 2025	Jun. 29, 2024
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Current Fiscal Year End Date	--12-28
Document Period End Date	Dec. 28, 2024
Document Transition Report	false
Entity File Number	1-14225
Entity Registrant Name	HNI Corporation
Entity Incorporation, State or Country Code	IA
Entity Tax Identification Number	42-0617510
Entity Address, Address Line One	600 East Second Street
Entity Address, Address Line Two	P. O. Box 1109
Entity Address, City or Town	Muscatine
Entity Address, State or Province	IA
Entity Address, Postal Zip Code	52761-0071
City Area Code	563
Local Phone Number	272-7400
Title of 12(b) Security	Common Stock
Trading Symbol	HNI
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction	false
Entity Shell Company	false
Entity Public Float			$ 1,528,339,577
Entity Common Stock, Share Outstanding		47,015,287
Documents Incorporated by Reference	to be held on May 15, 2025, which will be filed on Schedule 14A with the Securities and Exchange Commission within 120 days after December 28, 2024.
Entity Central Index Key	0000048287
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Amendment Flag	false