Revenue from Contracts with Customers - Narrative (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 29, 2024	Dec. 30, 2023
Revenue from Contract with Customer [Abstract]
Contract liability, customer deposits	$ 39.7	$ 35.6
Revenue recognized	$ 33.9

Contract With Customer, Liability, Customer Deposits, Revenue Recognized

No definition available.

Name:	hni_ContractWithCustomerLiabilityCustomerDepositsRevenueRecognized
Namespace Prefix:	hni_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration