Goodwill and Intangible Assets Disclosure [Abstract] Schedule of Goodwill [Table] Schedule of Goodwill [Table] Subsegments [Axis] Subsegments [Axis] Subsegments [Domain] Subsegments [Domain] Reporting Unit One and Reporting Unit Two Reporting Unit One And Reporting Unit Two [Member] Reporting Unit One And Reporting Unit Two [Member] Reporting Unit One Reporting Unit One [Member] Reporting Unit One [Member] Reporting Unit Two Reporting Unit Two [Member] Reporting Unit Two [Member] Reporting Unit Three Reporting Unit Three [Member] Reporting Unit Three [Member] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-lived Intangible Assets, Major Class Name [Domain] Trade Names Trade Names [Member] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Trademarks and trade names Trademarks and Trade Names [Member] Customer lists and other Customer Lists and Other Intangible Assets [Member] Customer Lists and Other Intangible Assets [Member] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Office Furniture Office Furniture [Member] Office Furniture [Member]. Statistical Measurement [Axis] Statistical Measurement [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Goodwill [Line Items] Goodwill [Line Items] Impairment of finite-lived intangible assets Impairment of Intangible Assets, Finite-lived Impairment of indefinite-lived intangible assets Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) Indefinite-lived intangible assets Indefinite-lived Intangible Assets (Excluding Goodwill) Near term growth rate Near Term Growth Utilized for Each Reporting Unit with Rates Range Near Term Growth Utilized for Each Reporting Unit with Rates Range Long-term growth rate Long Term Growth Utilized For Each Reporting Unit With Rates Range Long Term Growth Utilized For Each Reporting Unit With Rates Range Royalty rate Royalty Used For Each Reporting Unit With Rates Range Royalty Used For Each Reporting Unit With Rates Range Discount rate Discount Rate Utilized for Each Reporting Unit with Rates Range Discount Rate Utilized for Each Reporting Unit with Rates Range Impairment losses Goodwill, Impairment Loss Goodwill Goodwill Percentage of fair value in excess of carrying amount Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount Terminal growth rate Terminal Growth Utilized for Each Reporting Unit with Rates Range Terminal Growth Utilized for Each Reporting Unit with Rates Range Effect of one hundred basis point increase in discount rate Goodwill, Impairment Loss, Effect of One Hundred Basis Point Increase in Discount Rate Goodwill, Impairment Loss, Effect of One Hundred Basis Point Increase in Discount Rate Effect of one hundred basis point decrease in long-term growth rate Goodwill, Impairment Loss, Effect Of One Hundred Basis Point Decrease In Long-term Growth Rate Goodwill, Impairment Loss, Effect Of One Hundred Basis Point Decrease In Long-term Growth Rate Commitments and Contingencies Disclosure [Abstract] Line of Credit Facility [Table] Line of Credit Facility [Table] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Letter of Credit Letter of Credit [Member] Trade Letters Of Credit And Bankers Acceptances Trade Letters Of Credit And Bankers Acceptances [Member] Trade Letters Of Credit And Bankers Acceptances [Member] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Letters of credit Long-term Line of Credit Hearth Products Hearth Products [Member] Hearth Products [Member]. Goodwill [Roll Forward] Goodwill [Roll Forward] Goodwill, gross, beginning balance Goodwill, Gross Accumulated impairment losses, beginning balance Goodwill, Impaired, Accumulated Impairment Loss Goodwill, net, beginning balance Goodwill acquired Goodwill, Acquired During Period Impairment losses Foreign currency translation adjustments Goodwill, Foreign Currency Translation Gain (Loss) Goodwill, gross, ending balance Accumulated impairment losses, ending balance Goodwill, net, ending balance Fair Value Disclosures [Abstract] Fair Value Measurements of Financial Instruments Fair Value Disclosures [Text Block] Statement of Cash Flows [Abstract] Net Cash Flows From (To) Operating Activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Non-cash items included in net income: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Other post-retirement and post-employment benefits Pension and Other Postretirement Benefits Cost (Reversal of Cost) Stock-based compensation Share-based Payment Arrangement, Noncash Expense Reduction in carrying amount of right-of-use assets Operating And Finance Lease Interest Expense And Amortization Operating And Finance Lease Interest Expense And Amortization Deferred income taxes Deferred Income Taxes and Tax Credits Impairment of goodwill and intangible assets Goodwill and Intangible Asset Impairment Other – net Other Noncash Income (Expense) Net increase (decrease) in operating assets and liabilities, net of divestitures Increase (Decrease) in Operating Capital Increase (decrease) in other liabilities Increase (Decrease) In Other Nonoperating Liabilities Increase (Decrease) In Other Nonoperating Liabilities Net cash flows from (to) operating activities Net Cash Provided by (Used in) Operating Activities Net Cash Flows From (To) Investing Activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Capital expenditures Payments to Acquire Productive Assets, Excluding Software The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures) and other intangible assets. Proceeds from sale of property, plant, and equipment Proceeds from Sale of Productive Assets Capitalized software Payments to Acquire Software Acquisition spending, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Purchase of investments Payments to Acquire Investments Sales or maturities of investments Proceeds from Sale and Maturity of Other Investments Net cash flows from (to) investing activities Net Cash Provided by (Used in) Investing Activities Net Cash Flows From (To) Financing Activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Payments of long-term debt Repayment of Long-term Debt, Long-term Lease Obligation, and Capital Security Proceeds from long-term debt Proceeds from Issuance of Long-term Debt Dividends paid Payments of Dividends Purchase of HNI Corporation common stock Payments for Repurchase of Common Stock Proceeds from sales of HNI Corporation common stock Proceeds from Issuance of Common Stock Other – net Proceeds from (Payments for) Other Financing Activities Net cash flows from (to) financing activities Net Cash Provided by (Used in) Financing Activities Net increase (decrease) in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash and cash equivalents at beginning of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash and cash equivalents at end of period Earnings Per Share [Abstract] Numerator: Net Income (Loss) Attributable to Parent [Abstract] Numerator for both basic and diluted EPS attributable to HNI Corporation net income Net Income (Loss) Attributable to Parent Denominators: Earnings Per Share, Basic, Other Disclosures [Abstract] Denominator for basic EPS weighted-average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Potentially dilutive shares from stock-based compensation plans (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Denominator for diluted EPS (in shares) Weighted Average Number of Shares Outstanding, Diluted Earnings per share - basic (in dollars per share) Earnings Per Share, Basic Earnings per share - diluted (in dollars per share) Earnings Per Share, Diluted Definite-lived intangible assets Finite-Lived Intangible Assets, Net Total goodwill and other intangible assets Intangible Assets, Net (Including Goodwill) Income Tax Disclosure [Abstract] Schedule of Income Tax Provision Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Inventory Disclosure [Abstract] Inventories Inventory, Net [Abstract] Finished products Inventory, Finished Goods, Gross Materials and work in process Inventory, Work in Process and Raw Materials Last-in, first-out (LIFO) allowance Inventory, LIFO Reserve Total inventories Inventory, Net Inventory valued by the LIFO costing method Percentage of LIFO Inventory Product Warranties Disclosures [Abstract] Activity Associated with Warranty Obligations Schedule of Product Warranty Liability [Table Text Block] Equity [Abstract] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Foreign Currency Translation Adjustment Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Unrealized Gains (Losses) on Debt Securities AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member] Pension and Post-retirement Liabilities Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Derivative Financial Instruments Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Beginning balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Other comprehensive income (loss) before reclassifications Other Comprehensive Income (Loss), before Reclassifications, before Tax Tax (expense) or benefit Other Comprehensive Income (Loss) before Reclassifications, Tax Reclassification of stranded tax impact Tax Cuts And Jobs Act, Reclassification From AOCI To Retained Earnings, Tax Effect Tax Cuts And Jobs Act, Reclassification From AOCI To Retained Earnings, Tax Effect Amounts reclassified from accumulated other comprehensive income (loss), net of tax Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Ending balance Retirement Benefits [Abstract] Components of Net Periodic Benefit Cost Schedule of Defined Benefit Plans Disclosures [Table Text Block] Income Statement [Abstract] Net sales Revenue from Contract with Customer, Excluding Assessed Tax Cost of sales Cost of Goods and Services Sold Gross profit Gross Profit Selling and administrative expenses Selling, General and Administrative Expense Operating income (loss) Operating Income (Loss) Interest expense, net Interest Income (Expense), Nonoperating, Net Income (loss) before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income taxes Income Tax Expense (Benefit) Net income (loss) Less: Net income (loss) attributable to non-controlling interest Net Income (Loss) Attributable to Noncontrolling Interest Net income (loss) attributable to HNI Corporation Average number of common shares outstanding – basic (in shares) Net income attributable to HNI Corporation per common share – basic (in dollars per share) Average number of common shares outstanding – diluted (in shares) Net income attributable to HNI Corporation per common share – diluted (in dollars per share) Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Change in unrealized gains (losses) on marketable securities, net of tax Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax Change in pension and post-retirement liability, net of tax Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Change in derivative financial instruments, net of tax Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent Other comprehensive income (loss), net of tax AOCI Including Portion Attributable to Noncontrolling Interest, Period Increase (Decrease) Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Less: Comprehensive loss attributable to non-controlling interest Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive income (loss) attributable to HNI Corporation Comprehensive Income (Loss), Net of Tax, Attributable to Parent Revenue from Contract with Customer [Abstract] Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Contract with Customer, Asset and Liability Contract with Customer, Asset and Liability [Table Text Block] Guarantees, Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Schedule of Earnings Per Share Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of Weighted Average Number of Shares Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Dividends [Axis] Dividends [Axis] Dividends [Domain] Dividends [Domain] Dividend Declared Dividend Declared [Member] Dividend Paid Dividend Paid [Member] Equity Components [Axis] Common Stock Common Stock [Member] Additional Paid-in Capital Additional Paid-in Capital [Member] Retained Earnings Retained Earnings [Member] Accumulated Other Comprehensive Income (Loss) Non-controlling Interest Noncontrolling Interest [Member] Statement [Line Items] Statement [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Comprehensive income: Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract] Net income (loss) Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax Impact of Implementation of Lease Guidance Cumulative Effect of New Accounting Principle in Period of Adoption Impact of new accounting standard related to credit losses Cash dividends Dividends, Common Stock, Cash Common shares – treasury: Treasury Stock Transactions, Excluding Value of Shares Reissued [Abstract] Shares purchased Treasury Stock, Value, Acquired, Par Value Method Shares issued under Members' Stock Purchase Plan and stock awards, net of tax Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture Schedule of Inventories Schedule of Inventory, Current [Table Text Block] Service cost Defined Benefit Plan, Service Cost Interest cost Defined Benefit Plan, Interest Cost Net periodic post-retirement benefit cost Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Trade receivables Accounts Receivable, before Allowance for Credit Loss Contract assets (current) Contract with Customer, Asset, Net, Current Contract assets (long-term) Contract with Customer, Asset, Net, Noncurrent Contract liabilities Contract with Customer, Liability Earnings Per Share Earnings Per Share [Text Block] Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table] Fair Value, Recurring and Nonrecurring [Table] Measurement Frequency [Axis] Measurement Frequency [Domain] Measurement Frequency [Domain] Fair value, measurements, recurring Fair Value, Recurring [Member] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Government securities Agency Securities [Member] Corporate Bonds Corporate Debt Securities [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Quoted prices in active markets for identical assets (Level 1) Fair Value, Inputs, Level 1 [Member] Significant other observable inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Significant unobservable inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Cash and cash equivalents (including money market funds) Cash and Cash Equivalents, at Carrying Value Available-for-sale debt securities Debt Securities, Available-for-sale Derivative financial instruments - liability Derivative Liability Derivative financial instruments - asset Derivative, Fair Value, Net Deferred stock-based compensation Deferred Compensation Share-based Arrangements, Liability, Current and Noncurrent Income (loss) before income taxes Income taxes Effective tax rate Effective Income Tax Rate Reconciliation, Percent Capitalized software Capitalized Computer Software, Amortization Other definite-lived intangibles Amortization of Intangible Assets Schedule of Components of Accumulated Other Comprehensive Income and Changes in Accumulated Other Comprehensive Income, Net of Tax Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of Reclassification from Accumulated Other Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Schedule of Dividends Declared and Paid Per Share Schedule of Dividends Declared and Paid Per Share [Table Text Block] Schedule of Dividends Declared and Paid Per Share [Table Text Block] Schedule of Share Repurchases Accelerated Share Repurchases [Table Text Block] Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Notes Payable to Banks Notes Payable to Banks [Member] Private Placement Private Placement Notes [Member] Private Placement Notes [Member] Fixed rate notes due in 2025 with an interest rate of 4.22% Seven Year Four Point Two Two Percent Private Placement Notes [Member] Seven Year Four Point Two Two Percent Private Placement Notes [Member] Fixed rate notes due in 2028 with an interest rate of 4.40% Ten Year Four Point Four Zero Percent Private Placement Notes [Member] Ten Year Four Point Four Zero Percent Private Placement Notes [Member] Revolving credit facility with interest at a variable rate (March 28, 2020 - 2.0%; December 28, 2019 - 2.8%) Revolving Credit Facility [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Long-term debt obligations Long-term Debt Fair value of debt obligations Long-term Debt, Fair Value Deferred debt issuance costs, current Debt Issuance Costs, Gross, Current Deferred debt issuance costs, noncurrent Debt Issuance Cost, Gross, Noncurrent Long-term line of credit outstanding Line of credit maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Line of credit remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Borrowings Debt Instrument, Face Amount Note term Debt Instrument, Term Interest rate Debt Instrument, Interest Rate, Stated Percentage Ratio of interest coverage to earnings for the last four fiscal quarters Debt Instrument, Covenant, Ratio of Interest Coverage to Earnings for the Last Four Fiscal Quarters Debt Instrument, Covenant, Ratio of Interest Coverage to Earnings for the Last Four Fiscal Quarters Ratio of leverage to earnings for the last four fiscal quarters Debt Instrument, Covenant, Ratio of Leverage to Earnings for the Last Four Fiscal Quarters Debt Instrument, Covenant, Ratio of Leverage to Earnings for the Last Four Fiscal Quarters Organization, Consolidation and Presentation of Financial Statements [Abstract] Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Accounting Changes and Error Corrections [Abstract] Recently Adopted Accounting Standards New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Statement of Financial Position [Abstract] Assets Assets [Abstract] Current Assets: Assets, Current [Abstract] Cash and cash equivalents Short-term investments Short-term Investments Receivables Allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss Inventories Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Total Current Assets Assets, Current Property, Plant, and Equipment: Property, Plant and Equipment, Net [Abstract] Land and land improvements Land and Land Improvements Buildings Buildings and Improvements, Gross Machinery and equipment Machinery and Equipment, Gross Construction in progress Construction in Progress, Gross Property plant and equipment, at cost Property, Plant and Equipment, Gross Less accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Net Property, Plant, and Equipment Property, Plant and Equipment, Net Right-of-use finance leases Finance Lease, Right-of-Use Asset Right-of-use Operating Leases Operating Lease, Right-of-Use Asset Goodwill and Other Intangible Assets Other Assets Other Assets, Noncurrent Total Assets Assets Liabilities and Equity Liabilities and Equity [Abstract] Current Liabilities: Liabilities, Current [Abstract] Accounts payable and accrued expenses Accounts Payable and Accrued Liabilities, Current Current maturities of long-term debt Long-term Debt, Current Maturities Current maturities of other long-term obligations Other Liabilities, Current Current lease obligations - finance Finance Lease, Liability, Current Current lease obligations - operating Operating Lease, Liability, Current Total Current Liabilities Liabilities, Current Long-Term Debt Long-term Debt, Excluding Current Maturities Long-term lease obligations - finance Finance Lease, Liability, Noncurrent Long-Term Lease Obligations - Operating Operating Lease, Liability, Noncurrent Other Long-Term Liabilities Other Liabilities, Noncurrent Deferred Income Taxes Deferred Income Tax Liabilities, Net Equity: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] HNI Corporation shareholders' equity: Stockholders' Equity Attributable to Parent [Abstract] Capital Stock: Capital [Abstract] Preferred stock - $1 par value, authorized 2,000 shares, no shares outstanding Preferred Stock, Value, Outstanding Common stock - $1 par value, authorized 200,000 shares, outstanding XXX shares at March 28, 2020 and 42,595 shares at December 28, 2019 Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital, Common Stock Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Total HNI Corporation shareholders' equity Stockholders' Equity Attributable to Parent Non-controlling interest Stockholders' Equity Attributable to Noncontrolling Interest Total Equity Total Liabilities and Equity Liabilities and Equity Segment Reporting [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Operating segments Operating Segments [Member] General corporate Corporate, Non-Segment [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Number of reportable segments Number of Reportable Segments Operating income (loss) Capital Expenditures (including capitalized software) Payments to Acquire Productive Assets Identifiable Assets Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Interest rate swap Interest Rate Swap [Member] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Class of Stock [Line Items] Class of Stock [Line Items] Derivative, notional amount Derivative, Notional Amount Derivative, fixed interest rate Derivative, Fixed Interest Rate Proceeds from derivative instrument Proceeds From Derivative Instrument, Operating Activities Proceeds From Derivative Instrument, Operating Activities Gain from termination of interest rate swap Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Derivative liability Stock repurchase program, remaining authorized repurchase amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Product Warranties Product Warranty Disclosure [Text Block] 2020 Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2023 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2024 Finite-Lived Intangible Assets, Amortization Expense, Year Five Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Contract with Customer, Sales Channel [Axis] Contract with Customer, Sales Channel [Axis] Contract with Customer, Sales Channel [Domain] Contract with Customer, Sales Channel [Domain] Supplies-driven channel Sales Channel, Supplies Driven [Member] Sales Channel, Supplies Driven [Member] Contract channel Sales Channel, Contract [Member] Sales Channgel, Contract [Member] Hearth Sales Channel, Hearth [Member] Sales Channel, Hearth [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Revenue from contracts with customers Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassifications from accumulated other comprehensive income (loss) Reclassification out of Accumulated Other Comprehensive Income [Member] Derivative Financial Instruments Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Interest expense, net Interest Expense Income tax expense Net of tax Cash dividends (in dollars per share) Common Stock, Dividends, Per Share, Cash Paid Revenue recognized Contract with Customer, Liability, Revenue Recognized Contract length Revenue, Performance Obligation, Description of Timing Payment terms Revenue Recognition, Payment Terms Revenue Recognition, Payment Terms Post-Retirement Health Care Pension and Other Postretirement Benefits Disclosure [Text Block] Current - in the next twelve months Standard Product Warranty Accrual, Current Long-term - beyond one year Standard Product Warranty Accrual, Noncurrent Total Standard Product Warranty Accrual Income Taxes Income Tax Disclosure [Text Block] Cover [Abstract] Document Type Document Type Document Quarterly Report Document Quarterly Report Document Period End Date Document Period End Date Document Transition Report Document Transition Report Entity File Number Entity File Number Entity Registrant Name Entity Registrant Name Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two Entity Address, City or Town Entity Address, City or Town Entity Address, State or Province Entity Address, State or Province Entity Address, Postal Zip Code Entity Address, Postal Zip Code City Area Code City Area Code Local Phone Number Local Phone Number Title of 12(b) Security Title of 12(b) Security Trading Symbol Trading Symbol Security Exchange Name Security Exchange Name Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Interactive Data Current Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Shell Company Entity Shell Company Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Central Index Key Entity Central Index Key Amendment Flag Amendment Flag Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Current Fiscal Year End Date Current Fiscal Year End Date Accumulated Other Comprehensive Income (Loss) and Shareholders' Equity Stockholders' Equity Note Disclosure [Text Block] Schedule of Debt Schedule of Debt [Table Text Block] Long-Term Debt Debt Disclosure [Text Block] Business Combinations [Abstract] Acquisitions and Divestitures Business Combination And Asset Acquisition Disclosure [Text Block] Business Combination And Asset Acquisition Disclosure [Text Block] Share-based Payment Arrangement [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Award Type [Domain] Award Type [Domain] Stock options Share-based Payment Arrangement, Option [Member] Restricted stock units Restricted Stock Units (RSUs) [Member] Performance stock units Performance Stock Units [Member] Performance Stock Units [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Compensation cost Share-based Payment Arrangement, Expense Fair value Share-based Compensation Arrangement by Share-based Payment Award, Grants in Period, Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Grants in Period, Fair Value Unrecognized compensation cost Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Weighted-Average Remaining Service Period (years) Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Common stock equivalents excluded because their inclusion would be anti-dilutive Share-based Payment Arrangement [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive securities excluded from computation of earnings per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Stock-Based Compensation Share-based Payment Arrangement [Text Block] Inventories Inventory Disclosure [Text Block] Schedule of Stock Based Compensation Expense Share-based Payment Arrangement, Cost by Plan [Table Text Block] Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period Share-based Payment Arrangement, Activity [Table Text Block] Schedule of Unrecognized Compensation Cost, Nonvested Awards Share-based Payment Arrangement, Nonvested Award, Cost [Table Text Block] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Other amounts Other Notes [Member] Other Notes [Member] Total debt Deferred debt issuance costs Debt Issuance Costs, Net Long-term debt Reportable Segment Data Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Asset Acquisition [Axis] Asset Acquisition [Axis] Asset Acquisition [Axis] Asset Acquisition [Domain] Asset Acquisition [Domain] [Domain] for Asset Acquisition [Axis] Two Small Hearth Companies Two Small Hearth Companies [Member] Two Small Hearth Companies [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Number of assets acquired Number Of Assets Acquired Number Of Assets Acquired Payments for asset acquisitions Payments For Asset Acquisitions Payments For Asset Acquisitions Goodwill and Other Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Product Warranty Accrual [Roll Forward] Movement in Standard Product Warranty Accrual [Roll Forward] Balance at beginning of period Accruals for warranties issued during period Standard Product Warranty Accrual, Increase for Warranties Issued Adjustments related to pre-existing warranties Standard Product Warranty Accrual, Increase (Decrease) for Preexisting Warranties Settlements made during the period Standard Product Warranty Accrual, Decrease for Payments Balance at end of period Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] Cumulative Effect, Period Of Adoption [Axis] Cumulative Effect, Period Of Adoption [Axis] Cumulative Effect, Period Of Adoption [Axis] Cumulative Effect, Period Of Adoption [Domain] Cumulative Effect, Period Of Adoption [Domain] [Domain] for Cumulative Effect, Period Of Adoption [Axis] Cumulative Effect, Period Of Adoption, Adjustment Cumulative Effect, Period Of Adoption, Adjustment [Member] Cumulative Effect, Period Of Adoption, Adjustment [Member] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Allowance for doubtful accounts Debt securities available-for-sale amortized cost Debt Securities, Available-for-sale, Amortized Cost Cash dividends per common share (in dollars per share) Common Stock, Dividends, Per Share, Declared Schedule of Finite-Lived Intangible Assets by Major Class [Table] Schedule of Finite-Lived Intangible Assets [Table] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Schedule of Intangible Assets and Goodwill Schedule of Intangible Assets and Goodwill [Table Text Block] Schedule of Goodwill Schedule of Goodwill [Table Text Block] Schedule of Finite-Lived Intangible Assets by Major Class Schedule of Finite-Lived Intangible Assets [Table Text Block] Finite-lived Intangible Assets Amortization Expense Finite-lived Intangible Assets Amortization Expense [Table Text Block] Schedule of Expected Amortization Expense Table Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Schedule of Indefinite Lived Intangible Assets and Goodwill Schedule of Indefinite-Lived Intangible Assets [Table Text Block] Reportable Segment Information Segment Reporting Disclosure [Text Block] Revenue Revenue from Contract with Customer [Policy Text Block] Inventories Inventory, Policy [Policy Text Block] Goodwill and Other Intangible Assets Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Product Warranties Standard Product Warranty, Policy [Policy Text Block] Fair Value Measurements Fair Value of Financial Instruments, Policy [Policy Text Block] Share-based Compensation, Option and Incentive Plans Share-based Payment Arrangement [Policy Text Block] Recently Adopted Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Business Segment Information Segment Reporting, Policy [Policy Text Block] Repurchased common stock (in shares) Stock Repurchased During Period, Shares Average Price Per Share (in dollars per share) Shares Repurchased During Period, Average Price Per Share Shares Repurchased During Period, Average Price Per Share Cash purchase price Stock Repurchased During Period, Cash Purchase Price Stock Repurchased During Period, Cash Purchase Price Purchases unsettled as of quarter end Stock Repurchased During Period, Not Settled, Value Stock Repurchased During Period, Not Settled, Value Prior year purchases settled in current year Stock Repurchased During Prior Period, Settled, Value Stock Repurchased During Prior Period, Settled, Value Shares repurchased per cash flow Revenue from Contracts with Customers Revenue from Contract with Customer [Text Block] Contract assets increase (decrease) Change in Contract with Customer, Asset [Abstract] Reclassification of contract assets to contra-revenue Contract With Customer, Asset, Reclassified To Contra Revenue Contract With Customer, Asset, Reclassified To Contra Revenue Net change Contract With Customer, Asset, Net Increase (Decrease) Contract With Customer, Asset, Net Increase (Decrease) Contract liabilities (increase) decrease Change in Contract with Customer, Liability [Abstract] Contract liabilities recognized and recorded to contra-revenue as a result of performance obligations satisfied Contract With Customer, Liability, Performance Obligation Contra Revenue Contract With Customer, Liability, Performance Obligation Contra Revenue Contract liabilities paid Contract With Customer, Liability, Contract Liabilities Paid Contract With Customer, Liability, Contract Liabilities Paid Cash received in advance and not recognized as revenue Contract With Customer, Liability, Cash Received In Advance, Not Recorded As Revenue Contract With Customer, Liability, Cash Received In Advance, Not Recorded As Revenue Reclassification of cash received in advance to revenue as a result of performance obligations satisfied Contract with Customer, Liability, Change in Timeframe, Performance Obligation Satisfied, Revenue Recognized Net change Contract With Customer, Liability, Net Increase (Decrease) Contract With Customer, Liability, Net Increase (Decrease) Schedule of Assets Measured at Fair Value Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Patents Patents [Member] Software Computer Software, Intangible Asset [Member] Gross Finite-Lived Intangible Assets, Gross Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Net