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Revenue from Contracts with Customers - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 28, 2024	Dec. 30, 2023
Revenue from Contract with Customer [Abstract]
Contract liability, customer deposits	$ 52.9	$ 35.6
Revenue recognized	$ 34.7

X

- Definition

Contract With Customer, Liability, Customer Deposit

+ References

No definition available.

+ Details

Name:	hni_ContractWithCustomerLiabilityCustomerDeposit
Namespace Prefix:	hni_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Contract With Customer, Liability, Customer Deposits, Revenue Recognized

+ References

No definition available.

+ Details

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

X

- References

No definition available.

+ Details

Name:	us-gaap_RevenueFromContractWithCustomerAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration