Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Trading Arrangement: Trading Arrangement [Axis] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Carrying amount Reported Value Measurement [Member] Document Fiscal Year Focus Document Fiscal Year Focus Revolving Credit Facility European Sub-Limit Revolving Credit Facility European Sub-Limit [Member] Revolving Credit Facility European Sub-Limit [Member] Adjustment to Compensation, Amount Adjustment to Compensation Amount Number of Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Segment Reporting [Abstract] Segment Reporting [Abstract] Schedule of Restricted Share Activity Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Schedule of Long-term Debt Schedule of Long-Term Debt Instruments [Table Text Block] Pension and Postretirement Benefits Retirement Benefits [Text Block] Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments [Abstract] Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments [Abstract] Restatement Determination Date Restatement Determination Date Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Total debt Long-Term Debt and Lease Obligation, Including Current Maturities Supply technologies Supply Technologies Product [Member] Supply technologies product. Amendment Flag Amendment Flag Current liabilities: Liabilities, Current [Abstract] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Revolving Credit Facility Canadian Sub-Limit Revolving Credit Facility Canadian Sub-Limit [Member] Revolving Credit Facility Canadian Sub-Limit [Member] Total long-term liabilities Liabilities, Noncurrent Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Entity Address, State or Province Entity Address, State or Province Number of plaintiffs Loss Contingency, Number of Plaintiffs PEO Total Compensation Amount PEO Total Compensation Amount Currency translation Foreign currency forward contracts Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Capital expenditures Segment Reporting, Long-Lived Asset, Expenditure for Addition Long-term liabilities, less current portion: Liabilities, Noncurrent [Abstract] Outstanding - beginning balance (in shares) Outstanding - ending balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Time-Based Share-Based Payment Arrangement, Tranche One [Member] Contract assets Contract with Customer, Asset, after Allowance for Credit Loss, Current Retirement Benefits [Abstract] Retirement Benefits [Abstract] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Number of reportable segments Number of Reportable Segments Total current liabilities Liabilities, Current Net cash used in investing activities from continuing operations Cash Provided by (Used in) Investing Activity, Continuing Operation Other comprehensive income (loss), net of tax: Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Entity Address, City or Town Entity Address, City or Town Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Selling, general and administrative expenses Selling, General And Administrative Expense, Adjusted Selling, General And Administrative Expense, Adjusted Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Components of inventory Inventory, Net [Abstract] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Line of credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Total other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] United States UNITED STATES Foreign currency forward contracts Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Net cash used in operating activities from continuing operations Cash Provided by (Used in) Operating Activity, Continuing Operation New Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Schedule of Results by Business Segment Segment Reporting [Table Text Block] Noncontrolling Interest Noncontrolling Interest [Member] Use of Estimates Use of Estimates, Policy [Policy Text Block] Payments on finance lease facilities, net (Payments On) Proceeds From Finance Lease Facilities, Net (Payments On) Proceeds From Finance Lease Facilities, Net Tax on currency translation as foreign earnings permanently reinvested Tax On Currency Translation As Foreign Earnings Permanently Reinvested Tax On Currency Translation As Foreign Earnings Permanently Reinvested Related Party [Axis] Related and Nonrelated Parties [Axis] Carrying amount Long-Term Debt Document Period End Date Document Period End Date Changes in operating assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Net cash used in investing activities from continuing operations Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Aggregate principal amount Debt Instrument, Face Amount Entity Shell Company Entity Shell Company Consolidation Items [Domain] Consolidation Items [Domain] Current portion of operating lease liabilities Operating Lease, Liability, Current Segments Segment Reporting, Policy [Policy Text Block] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] DISCONTINUED OPERATIONS Cash Provided by (Used in) Discontinued Operation [Abstract] Name Outstanding Recovery, Individual Name Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Document Fiscal Period Focus Document Fiscal Period Focus Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Geographical [Domain] Geographical [Domain] Purchases of property, plant and equipment Payments to Acquire Property, Plant, and Equipment Bank guarantees and letters of credit amount Bank Guarantees And Letters Of Credit Amount Bank Guarantees And Letters Of Credit Amount Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Company Selected Measure Name Company Selected Measure Name Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Seventh Amended and Restated Credit Agreement Seventh Amended and Restated Credit Agreement [Member] Seventh Amended and Restated Credit Agreement Pension and Postretirement Benefits Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Long-term debt, gross Long-Term Debt, Gross Credit Facility [Domain] Credit Facility [Domain] OPERATING ACTIVITIES FROM CONTINUING OPERATIONS Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Compensation Amount Outstanding Recovery Compensation Amount Individual: Individual [Axis] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Entity Emerging Growth Company Entity Emerging Growth Company Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Line of Credit Facility [Table] Line of Credit Facility [Table] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Property, plant and equipment, net Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Engineered specialty fasteners and other products Engineered Specialty Products [Member] Engineered specialty products. Gross profit Gross Profit Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Award Timing Predetermined Award Timing Predetermined [Flag] Schedule of Changes in Accumulated Comprehensive Loss Comprehensive Income (Loss) [Table Text Block] Total used by operating activities Cash Provided by (Used in) Operating Activity, Discontinued Operation Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Stock-based compensation expense APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Long-term debt Total long-term debt Debt and Lease Obligation Level 1 Fair Value, Inputs, Level 1 [Member] Effective tax rate Effective Income Tax Rate Reconciliation, Percent Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Outstanding - beginning balance (in dollars per share) Outstanding - ending balance (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Income from continuing operations Income from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest All Executive Categories All Executive Categories [Member] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Schedule of Components of Pension and Other Postretirement Benefits Income, Net Schedule of Net Benefit Costs [Table Text Block] Vesting [Domain] Vesting [Domain] Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Accounting Changes and Error Corrections [Abstract] Accounting Changes and Error Corrections [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Segments Segment Reporting [Text Block] Payments on other debt Repayments of Other Debt Expiration Date Trading Arrangement Expiration Date Schedule of Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Effect of exchange rate changes on cash Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Total equity Beginning balance Ending balance Equity, Including Portion Attributable to Noncontrolling Interest Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Nonrelated Party Nonrelated Party [Member] Net periodic benefit (income) expense Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Exercise Price Award Exercise Price INVESTING ACTIVITIES FROM CONTINUING OPERATIONS Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Segment Reporting [Line Items] Segment Reporting [Line Items] Unrecognized compensation cost related to non-vested stock-based compensation Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Document Quarterly Report Document Quarterly Report Corporate expenses Corporate Expenses Corporate Expenses Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Segments [Domain] Segments [Domain] Europe Europe [Member] Less: Unamortized debt issuance costs Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Equity Component [Domain] Equity Component [Domain] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Trade accounts payable Payable to affiliates Accounts Payable, Trade, Current Adoption Date Trading Arrangement Adoption Date Supply Technologies Segment Supply Technologies Segment Supply Technologies Supply Technologies [Member] Supply Technologies. Stated interest rate Debt Instrument, Interest Rate, Stated Percentage Dividend paid to parent Dividends, Common Stock, Cash Park-Ohio Industries, Inc. and Subsidiaries shareholder's equity Equity, Attributable to Parent Pension assets Assets for Plan Benefits, Defined Benefit Plan ASSETS Assets [Abstract] Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Insider Trading Policies and Procedures [Line Items] Finance Leases Finance Lease, Liability Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Selling, general and administrative expenses Selling, General and Administrative Expense Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Entity Central Index Key Entity Central Index Key Components of net periodic benefit cost Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] All Adjustments to Compensation All Adjustments to Compensation [Member] Corporate Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Other Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Other Item Equity [Abstract] Equity [Abstract] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Income Taxes Income Tax, Policy [Policy Text Block] Income Statement [Abstract] Income Statement [Abstract] Document Transition Report Document Transition Report Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Decrease in cash and cash equivalents from discontinued operations Cash Provided by (Used in) Discontinued Operation Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Corporate restructuring and other special charges Corporate Restructuring And Other Special Charges Corporate Restructuring And Other Special Charges City Area Code City Area Code Accumulated Other Comprehensive Loss Total AOCI Attributable to Parent [Member] All Individuals All Individuals [Member] Fair value Debt Instrument, Fair Value Disclosure Name Forgone Recovery, Individual Name Unrecognized compensation cost related to non-vested stock-based compensation, period for recognition (in years) Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Commitments and Contingencies Commitments and Contingencies, Policy [Policy Text Block] Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Weighted Average Grant Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Net cash provided by financing activities from continuing operations Cash Provided by (Used in) Financing Activity, Continuing Operation Statement [Line Items] Statement [Line Items] Total assets Identifiable assets Assets Schedule of Defined Benefit Plans Disclosures [Table] Defined Benefit Plan [Table] Operating Segments Operating Segments [Member] Interest expense, net Interest expense, net Interest Expense, Nonoperating Stock-Based Compensation Share-Based Payment Arrangement [Text Block] PEO PEO [Member] Stock-based compensation expense Share-Based Payment Arrangement, Expense Measurement Basis [Axis] Measurement Basis [Axis] Senior Notes 8.500% Due 2030 Senior Notes 8.500% Due 2030 [Member] Senior Notes 8.500% Due 2030 Other long-term liabilities Other Liabilities, Noncurrent Goodwill Goodwill Retirement Plan Type [Axis] Retirement Plan Type [Axis] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Granted (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Retained Earnings Retained Earnings [Member] Long-term operating lease liabilities Operating Lease, Liability, Noncurrent Revolving credit facility Revolving credit facility Revolving Credit Facility [Member] Canceled or expired (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Award Timing Disclosures [Line Items] Cumulative Translation Adjustment Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Schedule of Fair Value of Debt Fair Value, by Balance Sheet Grouping [Table Text Block] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Entity Current Reporting Status Entity Current Reporting Status Net cash provided by financing activities from continuing operations Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Total Shareholder Return Amount Total Shareholder Return Amount Prepaid and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Restructuring and other special charges Restructuring And Other Special Charges Restructuring And Other Special Charges Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] FINANCING ACTIVITIES FROM CONTINUING OPERATIONS Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Net sales Total Total Revenue from Contract with Customer, Excluding Assessed Tax Line of credit facility, remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Interest costs Defined Benefit Plan, Interest Cost Inventories Inventory Disclosure [Text Block] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] 8.500% Senior Notes Due 2030 8.500% Senior Notes Due 2030 [Member] 8.500% Senior Notes Due 2030 Underlying Securities Award Underlying Securities Amount Comprehensive loss attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Fair value Estimate of Fair Value Measurement [Member] Revenue Revenue from Contract with Customer [Text Block] Inventories Increase (Decrease) in Inventories Segment Reporting [Table] Segment Reporting [Table] Other current assets Other Assets, Current Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Operating income Operating Income (Loss) Current Fiscal Year End Date Current Fiscal Year End Date Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Asia Asia [Member] Time-Based Restricted Share, Time-Based [Member] Restricted Share, Time-Based Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Entity File Number Entity File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Service costs Defined Benefit Plan, Service Cost Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Measure: Measure [Axis] Finished goods Inventory, Finished Goods, Gross Industrial equipment Industrial Equipment [Member] Industrial Equipment [Member] Accumulated Other Comprehensive Loss Comprehensive Income (Loss) Note [Text Block] Equity Components [Axis] Equity Components [Axis] Accounts receivable Increase (Decrease) in Accounts Receivable Product and Service [Domain] Product and Service [Domain] Related Party Related Party [Member] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Entity Interactive Data Current Entity Interactive Data Current Loss attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Entity Small Business Entity Small Business Comprehensive income attributable to Park-Ohio Industries, Inc. common shareholder Comprehensive Income (Loss), Net of Tax, Attributable to Parent Termination Date Trading Arrangement Termination Date Dividends paid to parent Payments Of Dividends To Parent Payments Of Dividends To Parent Loss from discontinued operations, net of tax Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Pension and other postretirement benefits Pension and OPEB activity, net of tax Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Other long-term assets Other Assets, Noncurrent Document Type Document Type Accrued expenses and other Accrued Liabilities, Current Fair Value as of Grant Date Award Grant Date Fair Value Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Arrangement Duration Trading Arrangement Duration Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Local Phone Number Local Phone Number Postretirement Benefits Other Postretirement Benefits Plan [Member] Work-in-process Inventory, Work in Process, Gross Canada CANADA Consolidation Items [Axis] Consolidation Items [Axis] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Income from continuing operations before income taxes Pre-tax income Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Percentage ownership Percentage Of Ownership Over Guarantor Subsidiaries Percentage Of Ownership Over Guarantor Subsidiaries Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Other Other Countries [Member] Other countries. Forged and machined products Forged and Machined Products [Member] Forged and machined products. Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Segment operating income Segment Operating Income (Loss) Segment Operating Income (Loss) Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Executive Category: Executive Category [Axis] Issue price as a percentage of par Debt Instrument, Issue Price as Percentage of Principal Amount Debt Instrument, Issue Price as Percentage of Principal Amount Assembly Components Segment Assembly Components Segment Assembly Components Assembly Components [Member] Assembly components. LIABILITIES AND SHAREHOLDER’S EQUITY Liabilities and Equity [Abstract] Inventories, net Inventories, net Inventory, Net Award Type [Domain] Award Type [Domain] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Currency translation Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax PEO Name PEO Name Geographical [Axis] Geographical [Axis] Other components of pension and other postretirement benefits income, net Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component Cash Flow Hedges Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Recognized net actuarial loss Defined Benefit Plan, Actuarial Gain (Loss), Immediate Recognition as Component in Net Periodic Benefit (Cost) Credit Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Total comprehensive income, net of tax Other comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Debt Instrument [Axis] Debt Instrument [Axis] Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Schedule of Inventories Schedule of Inventory, Current [Table Text Block] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Contract liabilities Contract with Customer, Liability, Current Total current assets Assets, Current Insider Trading Arrangements [Line Items] Award Type [Axis] Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts receivable, net Receivable from affiliates Accounts Receivable, after Allowance for Credit Loss, Current Product and Service [Axis] Product and Service [Axis] Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Pension Benefits Pension Plan [Member] Common Stock Common Stock [Member] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Cover [Abstract] Proceeds from other debt Proceeds from Issuance of Other Long-Term Debt Equity Awards Adjustments Equity Awards Adjustments [Member] Total liabilities and shareholder's equity Liabilities and Equity Employee Stock Option Share-Based Payment Arrangement, Option [Member] Current portion of long-term debt and short-term debt Less: Current portion of long-term debt and short-term debt Debt, Current Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Noncontrolling interests Equity, Attributable to Noncontrolling Interest Segments [Axis] Segments [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Related Party [Domain] Related and Nonrelated Parties [Domain] Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Tabular List, Table Tabular List [Table Text Block] Vesting [Axis] Vesting [Axis] Other Other Long-Term Debt Engineered Products Segment Engineered Products Segment Engineered Products Engineered Products [Member] Engineered Products. Financing Arrangements Long-Term Debt [Text Block] Name Awards Close in Time to MNPI Disclosures, Individual Name Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Canceled or expired (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Raw materials and supplies Inventory, Raw Materials and Supplies, Gross Adjustment to Compensation: Adjustment to Compensation [Axis] Number of cases asserting claims Loss Contingency, Pending Claims, Number Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Other components of pension and other postretirement benefits income, net Net Periodic Defined Benefits Expense (Reversal Of Expense), Excluding Service Cost Component, Adjusted Net Periodic Defined Benefits Expense (Reversal Of Expense), Excluding Service Cost Component, Adjusted Credit Facility [Axis] Credit Facility [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Name Measure Name Income Taxes Income Tax Disclosure [Text Block] Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Mexico MEXICO Debt Instrument [Line Items] Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Retirement Plan Type [Domain] Retirement Plan Type [Domain] Additional Paid-In Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Name Trading Arrangement, Individual Name Cash and cash equivalents Cash and Cash Equivalent Company Selected Measure Amount Company Selected Measure Amount Depreciation and amortization Depreciation and amortization expense Depreciation, Depletion and Amortization Net income attributable to Park-Ohio Industries, Inc. common shareholder before noncontrolling interest Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Current assets: Assets, Current [Abstract] Non-PEO NEO Non-PEO NEO [Member] Senior Secured Notes Senior Notes [Member] Entity Address, Address Line One Entity Address, Address Line One Vested (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Income tax expense Income tax expense Income Tax Expense (Benefit) Adjustments to reconcile income from continuing operations to net cash used in operating activities from continuing operations: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Noncash Item [Abstract] Cost of sales Cost of sales Cost of Product and Service Sold Award Timing Method Award Timing Method [Text Block] Consolidation Consolidation, Policy [Policy Text Block] Increase (decrease) in cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Fuel, rubber and plastic products Fuel, Rubber And Plastic Products [Member] Fuel, Rubber And Plastic Products [Member] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Restructuring and other special charges Restructuring And Other Special Charges, Adjusted Restructuring And Other Special Charges, Adjusted New Accounting Pronouncements Accounting Standards Update and Change in Accounting Principle [Text Block] Increase (Decrease) in Accumulated Other Comprehensive Income (Loss) [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Net income attributable to Park-Ohio Industries, Inc. common shareholder Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Income from continuing operations attributable to Park-Ohio Industries, Inc. common shareholder Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Proceeds from revolving credit facility, net Proceeds from (Repayments of) Lines of Credit Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]