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Revenue from Contracts with Customers - Narrative (Details) - USD ($) $ in Millions | 9 Months Ended |
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Oct. 01, 2022 | Jan. 01, 2022
Revenue from Contract with Customer [Abstract] |  |
Contract liability, customer deposits | $ 30.3 | $ 27.2
Revenue recognized | $ 25.8 |
Payment terms | 30 days |

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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 Revenue Recognition, Payment Terms + References No definition available. + Details
Name: | hni_RevenueRecognitionPaymentTerms
Namespace Prefix: | hni_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130549-203045 + Details
Name: | us-gaap_ContractWithCustomerLiabilityRevenueRecognized
Namespace Prefix: | us-gaap_
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