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Revenue from Contracts with Customers - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 29, 2025 | Dec. 28, 2024
Revenue from Contract with Customer [Abstract] |  |
Contract liability, customer deposits | $ 34.0 | $ 42.1
Revenue recognized | $ 30.4 |

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- 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

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- 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

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- References No definition available. + Details
Name: | us-gaap_RevenueFromContractWithCustomerAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration