Inventory Disclosure [Abstract] Purchased parts and raw materials Inventory, Parts and Components, Net of Reserves Work in progress Inventory, Work in Process, Net of Reserves Service parts Other Inventory, Net of Reserves Finished goods Inventory, Finished Goods, Net of Reserves Total inventories Inventory, Net Goodwill and Intangible Assets Disclosure [Abstract] Goodwill Goodwill Net carrying value of Goodwill and other intangible assets Intangible Assets, Net (Including Goodwill) Related Party Transactions [Abstract] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Ashe Capital Management, LP Affiliated Entity [Member] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Domain] Share Repurchase Program [Domain] 2016 Repurchase Program Two Thousand Sixteen Repurchase Plan [Member] Two thousand sixteen repurchase plan member. Related Party Transaction [Line Items] Related Party Transaction [Line Items] Common stock repurchased during the period (shares) Stock Repurchased During Period, Shares Common stock, repurchased during the period Stock Repurchased During Period, Value 2020 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 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 Revenue from Contract with Customer [Abstract] REVENUE Revenue from Contract with Customer [Text Block] Leases [Abstract] Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Buildings Building [Member] Land Land [Member] Vehicles Vehicles [Member] Equipment Equipment [Member] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Total right-of-use assets Operating Lease, Right-of-Use Asset Debt Disclosure [Abstract] Organization, Consolidation and Presentation of Financial Statements Disclosure [Table] Organization, Consolidation and Presentation of Financial Statements Disclosure [Table] Organization, Consolidation and Presentation of Financial Statements Disclosure [Table] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Sales Revenue, Net Revenue Benchmark [Member] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] North America North America [Member] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Geographic Concentration Risk Geographic Concentration Risk [Member] Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] Organization, Consolidation And Presentation Of Financial Statements Disclosure [Line Items] Organization, Consolidation And Presentation Of Financial Statements Disclosure [Line Items] Number of employees Entity Number of Employees Transmission product lines Transmission Product Lines Transmission product lines. Concentration of risk, percentage Concentration Risk, Percentage Worldwide independent distributor and dealer locations Worldwide Independent Distributor and Dealer Locations Worldwide independent distributor and dealer locations. Summary of Long-Term Debt and Maturities Schedule of Long-term Debt Instruments [Table Text Block] Fair Value Disclosures [Abstract] FAIR VALUE OF FINANCIAL INSTRUMENTS Fair Value Disclosures [Text Block] Equity [Abstract] ACCUMULATED OTHER COMPREHENSIVE LOSS Comprehensive Income (Loss) Note [Text Block] DEBT Debt Disclosure [Text Block] Commitments and Contingencies Disclosure [Abstract] COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Earnings Per Share [Abstract] Reconciliation of Numerators and Denominators Used to Calculate Basic EPS and Diluted EPS Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Postemployment Benefits [Abstract] EMPLOYEE BENEFIT PLANS Compensation and Employee Benefit Plans [Text Block] Guarantees and Product Warranties [Abstract] Product Warranty Liability Activities Schedule of Product Warranty Liability [Table Text Block] Other Liabilities Disclosure [Abstract] Summary of Other Current Liabilities Schedule of Other Assets and Other Liabilities [Table Text Block] Right-of-use assets Current lease liabilities Operating Lease, Liability, Current Non-current lease liabilities Operating Lease, Liability, Noncurrent Discount rate Lessee, Operating Lease, Discount Rate Remaining lease term Operating Lease, Weighted Average Remaining Lease Term Operating expense Operating Lease, Expense Short term operating lease expense Short-term Lease, Cost New ROU assets Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Uncategorized [Abstract] Uncategorized [Abstract] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [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] Reclassified from AOCL Reclassification out of Accumulated Other Comprehensive Income [Member] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Prior service cost Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member] Pension and OPEB liability adjustment Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Other income, net Other Nonoperating Income (Expense) Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income tax expense Income Tax Expense (Benefit) Net income Net Income (Loss) Attributable to Parent Revenue Recognition and Deferred Revenue [Abstract] Deferred Revenue for Extended Transmission Coverage Activity Contract with Customer, Asset and Liability [Table Text Block] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Fair Value, Inputs, Level 3 [Member] Fair Value, Inputs, Level 3 [Member] Significant Other Observable Inputs (Level 2) Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Financial assets Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Financial liabilities Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value 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] Senior Notes, fixed 5.0%, due 2024 Five Percentage Senior Notes Due 2024 [Member] Five Percentage Senior Notes Due 2024 [Member] Senior Notes, fixed 4.75%, due 2027 Four Point Seven Five Percentage Senior Notes Due 2027 [Member] Four Point Seven Five Percentage Senior Notes Due 2027 Senior Notes, fixed 5.875%, due 2029 Five Point Eight Seven Five Percentage Senior Notes Due 2029 [Member] Five Point Eight Seven Five Percentage Senior Notes Due 2029 New Revolving Credit Facility New Revolving Credit Facility [Member] New Revolving Credit Facility [Member] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] ATI Subsidiaries [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Long-term debt Long-term Debt Debt instrument, stated interest rate Debt Instrument, Interest Rate, Stated Percentage Fair value of long-term debt obligations Long-term Debt, Fair Value Environmental liability Accrual for Environmental Loss Contingencies Derivative Instruments and Hedging Activities Disclosure [Abstract] DERIVATIVES Derivative Instruments and Hedging Activities Disclosure [Text Block] INVENTORIES Inventory Disclosure [Text Block] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] ETC contracts Extended Transmission Coverage [Member] Extended Transmission Coverage [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Deferred revenue current liabilities Contract with Customer, Liability, Current Deferred revenue non-current liabilities Contract with Customer, Liability, Noncurrent Disaggregated Revenue by Categories Disaggregation of Revenue [Table Text Block] Deferred Revenue Disclosure [Abstract] Adjustments based on variable consideration Revenue, Adjustments To Variable Consideration Constraint Revenue, Adjustments To Variable Consideration Constraint Credit term period Product Sales, Credit Term Product Sales, Credit Term Contract assets Contract with Customer, Asset, after Allowance for Credit Loss EARNINGS PER SHARE Earnings Per Share [Text Block] Summary of Fair Value of Financial Assets and (Liabilities) Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Accounting Policies [Abstract] Basis of Presentation and Principles of Consolidation Basis of Accounting, Policy [Policy Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Business Combinations Business Combinations Policy [Policy Text Block] Recently Adopted Accounting Pronouncements and Recently Issued Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Statement of Financial Position [Abstract] Statement [Table] Statement [Table] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Voting Common Stock Voting Common Stock [Member] Voting Common Stock [Member] Non-voting Common Stock Nonvoting Common Stock [Member] Statement [Line Items] Statement [Line Items] ASSETS Assets [Abstract] Current Assets Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Accounts receivable – net of allowance for doubtful accounts of $2 and $1, respectively Accounts Receivable, after Allowance for Credit Loss, Current Inventories Other current assets Other Assets, Current Total Current Assets Assets, Current Property, plant and equipment, net Property, Plant and Equipment, Net Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Other non-current assets Other Assets, Noncurrent TOTAL ASSETS Assets LIABILITIES Liabilities [Abstract] Current Liabilities Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Product warranty liability Product Warranty Accrual, Current Current portion of long-term debt Long-term Debt, Current Maturities Deferred revenue Other current liabilities Other Liabilities, Current Total Current Liabilities Liabilities, Current Product warranty liability Product Warranty Accrual, Noncurrent Deferred revenue Long-term debt Long-term Debt, Excluding Current Maturities Deferred income taxes Deferred Income Tax Liabilities, Net Other non-current liabilities Other Liabilities, Noncurrent TOTAL LIABILITIES Liabilities Commitments and contingencies (see NOTE P) Commitments and Contingencies STOCKHOLDERS’ EQUITY Stockholders' Equity Attributable to Parent [Abstract] Common stock Common Stock, Value, Issued Preferred stock, $0.01 par value, 100,000,000 shares authorized, none issued and outstanding Preferred Stock, Value, Issued Paid in capital Additional Paid in Capital, Common Stock Accumulated deficit Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss, net of tax Accumulated Other Comprehensive Income (Loss), Net of Tax TOTAL STOCKHOLDERS’ EQUITY Stockholders' Equity Attributable to Parent TOTAL LIABILITIES & STOCKHOLDERS’ EQUITY Liabilities and Equity Senior Secured Credit Facility Term Loan, variable, due 2022 Senior Secured Credit Facility Term Loan Variable Due 2022 [Member] Senior Secured Credit Facility Term Loan Variable Due 2022 [Member] Senior Secured Credit Facility Term Loan, variable, due 2026 Senior Secured Credit Facility Term Loan Variable Due 2026 [Member] Senior Secured Credit Facility Term Loan Variable Due 2026 New Term Loan New Term Loan [Member] New Term Loan [Member] Total long-term debt Less: current maturities of long-term debt Less: deferred financing costs, net Debt Issuance Costs, Net Total long-term debt, net Cover page. Document Type Document Type Document Quarterly Report Document Quarterly Report Document Period End Date Document Period End Date Entity File Number Entity File Number Document Transition Report Document Transition Report 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, 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 Current Fiscal Year End Date Current Fiscal Year End Date Amendment Flag Amendment Flag Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Income Tax Disclosure [Abstract] INCOME TAXES Income Tax Disclosure [Text Block] Schedule of Lease Maturity, Prior Guidance Lessee, Operating Lease, Disclosure [Table Text Block] Schedule of Lease Maturity Lessee, Operating Lease, Liability, Maturity [Table Text Block] Schedule of Right of Use Assets Lessee, Right Of Use Assets [Table Text Block] Lessee, Right Of Use Assets [Table Text Block] Guarantees [Abstract] Beginning balance Standard and Extended Product Warranty Accrual Payments Standard and Extended Product Warranty Accrual, Decrease for Payments Increase in liability (warranty issued during period) Standard and Extended Product Warranty Accrual, Increase for Warranties Issued Net adjustments to liability Standard and Extended Product Warranty Accrual, Increase (Decrease) for Preexisting Warranties Ending balance Shares excluded from diluted EPS calculation (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Net income Weighted average shares of common stock outstanding (shares) Weighted Average Number of Shares Outstanding, Basic Dilutive effect of stock-based awards (shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Diluted weighted average shares of common stock outstanding (shares) Weighted Average Number of Shares Outstanding, Diluted Basic earnings per share attributable to common stockholders (USD per share) Earnings Per Share, Basic Diluted earnings per share attributable to common stockholders (USD per share) Earnings Per Share, Diluted Prior Term Loan Prior Term Loan [Member] Prior Term Loan [Member] Prior Revolving Credit Facility Prior Revolving Credit Facility [Member] Prior Revolving Credit Facility [Member] Prior Senior Secured Credit Facility Prior Senior Secured Credit Facility [Member] Prior Senior Secured Credit Facility [Member] New Senior Secured Credit Facility New Senior Secured Credit Facility [Member] New Senior Secured Credit Facility [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] LIBOR London Interbank Offered Rate (LIBOR) [Member] greater of the prime lending rate or federal funds Prime Rate or Federal Funds Rate [Member] Prime Rate or Federal Funds Rate [Member] Federal funds rate Fed Funds Effective Rate Overnight Index Swap Rate [Member] Base Rate Base Rate [Member] Variable Rate Component [Axis] Variable Rate Component [Axis] Variable Rate Component [Axis] Variable Rate Component [Domain] Variable Rate Component [Domain] [Domain] for Variable Rate Component [Axis] first lien net leverage ratio is above 4.00x Variable Rate One [Member] Variable Rate One [Member] first lien net leverage ratio is equal to or less than 4.00x and above 3.50x Variable Rate Two [Member] Variable Rate Two [Member] first lien net leverage ratio is equal to or below 3.50x Variable Rate Three [Member] Variable Rate Three [Member] Statistical Measurement [Axis] Statistical Measurement [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Deferred financing fees Debt issuance expense Debt Issuance Expense Debt Issuance Expense Applicable margin over base rate Debt Instrument, Basis Spread on Variable Rate Floor rate Debt Instrument Floor Rate Debt instrument floor rate. Debt instrument effective interest rate Debt Instrument, Interest Rate, Effective Percentage Principal payments on term loans Debt Instrument, Periodic Payment, Principal Available revolving credit facility Line of Credit Facility, Remaining Borrowing Capacity Letters of credit Letters of Credit Outstanding, Amount Borrowing capacity at any time Line Of Credit Facility, Maximum Borrowing Capacity At Any Point In Time Line Of Credit Facility, Maximum Borrowing Capacity At Any Point In Time Net leverage ratio Debt Instrument, Covenant, Net Leverage Ratio Debt Instrument, Covenant, Net Leverage Ratio Commitment fee percentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Required senior secured leverage ratio Debt Instrument, Covenant, Leverage Ratio, Maximum Debt Instrument, Covenant, Leverage Ratio, Maximum Amount outstanding Long-term Line of Credit Achieved senior secured leverage ratio Debt Instrument, Covenant, Leverage Ratio, Achieved Debt Instrument, Covenant, Leverage Ratio, Achieved Allowance for doubtful accounts receivables Accounts Receivable, Allowance for Credit Loss, Current Common stock, par value (USD per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares issued (in shares) Common Stock, Shares, Issued Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Preferred stock, par value (USD per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Statement of Comprehensive Income [Abstract] Net sales Revenue from Contract with Customer, Excluding Assessed Tax Cost of sales Cost of Revenue Gross profit Gross Profit Selling, general and administrative Selling, General and Administrative Expense Engineering — research and development Research and Development Expense Operating income Operating Income (Loss) Interest expense, net Interest Income (Expense), Net Income before income taxes Income tax expense Comprehensive income, net of tax Comprehensive Income (Loss), Net of Tax, Attributable to Parent Business Combinations [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] AxleTech Electric Vehicle Systems Division AxleTech Electric Vehicle Systems Division [Member] AxleTech Electric Vehicle Systems Division [Member] Vantage Power Limited Vantage Power Limited [Member] Vantage Power Limited [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Payments to acquire businesses Payments to Acquire Businesses, Gross Intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Inventory Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory Property, plant and equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Additional payment amount Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High Payment term Business Combination, Contingent Consideration Arrangements Term Business Combination, Contingent Consideration Arrangements Term 2019 Operating Leases, Future Minimum Payments, Remainder of Fiscal Year 2020 Operating Leases, Future Minimum Payments, Due in Two Years 2021 Operating Leases, Future Minimum Payments, Due in Three Years 2022 Operating Leases, Future Minimum Payments, Due in Four Years 2023 Operating Leases, Future Minimum Payments, Due in Five Years Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Total Operating Leases, Future Minimum Payments Due Retirement Benefits [Abstract] Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Retirement Plan Name [Axis] Retirement Plan Name [Axis] Retirement Plan Name [Domain] Retirement Plan Name [Domain] Pension Plans Pension Plan [Member] Post-retirement Benefits Other Postretirement Benefits Plan [Member] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Service cost Defined Benefit Plan, Service Cost Interest cost Defined Benefit Plan, Interest Cost Expected return on assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Prior service credit Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Net periodic benefit cost (credit) Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Change in Contract with Customer, Liability [Roll Forward] Change in Contract with Customer, Liability [Roll Forward] Change in Contract with Customer, Liability [Roll Forward] Beginning balance Contract with Customer, Liability Increases Contract With Customer, Liability, Increase Contract With Customer, Liability, Increase Revenue earned Contract with Customer, Liability, Revenue Recognized Ending balance Summary of Other Intangible Assets Schedule of Intangible Assets and Goodwill [Table Text Block] Amortization Expense Related to Other Intangible Assets for Next Five Fiscal Years Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] 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] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Derivatives designated as hedging instruments Designated as Hedging Instrument [Member] Cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Rabbi trust assets Assets Held-in-trust Deferred compensation obligation Deferred Compensation Cash-based Arrangements, Liability, Current and Noncurrent Derivative liabilities Derivative Liability Total Fair Value, Net Asset (Liability) Schedule Of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Table] Schedule Of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Table] Schedule of acquired finite and indefinite lived intangible asset by major class. 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 name Trade Names [Member] In process research and development In Process Research and Development [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] Customer relationships — commercial Customer Relationships Commercial [Member] Customer relationships - commercial. Proprietary technology Proprietary Technology [Member] Proprietary technology. Customer relationships — defense Customer Relationships Defense [Member] Customer Relationships Defense. Goodwill and Intangible Assets Disclosure [Line Items] Goodwill and Intangible Assets Disclosure [Line Items] Goodwill and Intangible Assets Disclosure [Line Items] Intangible assets Indefinite-lived Intangible Assets (Excluding Goodwill) Intangible assets, gross Finite-Lived Intangible Assets, Gross Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Intangible assets, net Finite-Lived Intangible Assets, Net Intangible assets, gross, Total Intangible Assets, Gross (Excluding Goodwill) Intangible assets, net, Total OTHER CURRENT LIABILITIES Other Liabilities Disclosure [Text Block] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Deferred Revenue Arrangement, by Type [Table] Deferred Revenue Arrangement, by Type [Table] North America On-Highway North America on Highway [Member] North America on Highway. North America Off-Highway North America Off Highway [Member] North America Off Highway. Defense Defense [Member] Defense [Member] Outside North America On-Highway Outside North America on Highway [Member] Outside North America on Highway. Outside North America Off-Highway Outside North America Off Highway [Member] Outside North America Off Highway [Member] Service Parts, Support Equipment and Other Service Parts Support Equipment and Other [Member] Service Parts Support Equipment and Other. Total Net Sales Derivative [Table] Derivative [Table] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Interest Rate Swaps A Interest Rate SwapsA [Member] Interest Rate Swaps A Interest Rate Swaps B Interest Rate SwapsB [Member] Interest Rate Swaps B. Interest Rate Swap C Interest Rate Swap C [Member] Interest Rate Swap C [Member] Available-for-sale securities and interest rate swaps Accumulated Other Comprehensive Income / Derivatives Qualifying As Hedges [Member] Accumulated other comprehensive income / derivatives qualifying as hedges. Derivative [Line Items] Derivative [Line Items] Notional amount Derivative, Notional Amount Fixed interest rate Derivative, Fixed Interest Rate Accumulated other comprehensive loss, net of tax AOCI before Tax, Attributable to Parent Accumulated other comprehensive income (loss), be Reclassified During Next 12 Months Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net DEFERRED REVENUE Common Stock Disclosure [Table] Common Stock Disclosure [Table] Common Stock Disclosure [Table] Common Stock Disclosure [Line Items] Common Stock Disclosure [Line Items] Common Stock Disclosure [Line Items] Stock repurchase program, authorized amount Stock Repurchase Program, Authorized Amount Stock repurchase program, increase in authorized amount Stock Repurchase Program Increase In Authorized Amount Stock Repurchase Program Increase In Authorized Amount Common stock, repurchases authorized Stock Repurchase Program, Remaining Authorized Repurchase Amount Reclassification of stranded tax effects 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 Assets transfered Prepaid Lease Expense, Assets Transfered Prepaid Lease Expense, Assets Transfered OVERVIEW Nature of Operations [Text Block] PRODUCT WARRANTY LIABILITIES Product Warranty Disclosure [Text Block] Components of Net Periodic Benefit Cost (credit) Schedule of Net Benefit Costs [Table Text Block] Components of Inventories Schedule of Inventory, Current [Table Text Block] ACQUISITIONS Business Combination Disclosure [Text Block] Available-for-sale securities and interest rate swaps Accumulated Other Comprehensive Income, Available-For-Sale Securities and Interest Rate Swaps [Member] Accumulated Other Comprehensive Income, Available-For-Sale Securities and Interest Rate Swaps [Member] Foreign currency items Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Accumulated Other Comprehensive Loss, net of tax AOCI Attributable to Parent [Member] Beginning balance of AOCL Other comprehensive loss before reclassifications Other Comprehensive Income (Loss), before Reclassifications, before Tax Amounts reclassified from AOCL Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax Income tax Other Comprehensive Income (Loss), Tax Net current period other comprehensive loss Other Comprehensive Income (Loss), Net of Tax Total AOCL Face amount Debt Instrument, Face Amount LEASES Lessee, Operating Leases [Text Block] Interest Rate Swaps Interest Rate Swap [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Other current liabilities Other Current Liabilities [Member] Other non-current liabilities Other Noncurrent Liabilities [Member] Interest rate swaps, liability Derivative Liability, Fair Value, Gross Liability Total derivatives designated as hedging instruments Derivative, Fair Value, Net COMMON STOCK Stock Repurchase Program Authorized [Text Block] The entire disclosure for amount of a stock repurchase plan authorized by an entity's Board of Directors and expiration date for the repurchase of an entity's own shares under a stock repurchase plan. Statement of Cash Flows [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Amortization of intangible assets Amortization of Intangible Assets Depreciation of property, plant and equipment Depreciation Deferred income taxes Deferred Income Tax Expense (Benefit) Stock-based compensation Share-based Payment Arrangement, Noncash Expense Expenses related to long-term debt refinancing Long-Term Debt Refinancing Expense Long-Term Debt Refinancing Expense Amortization of deferred financing costs Amortization of Debt Issuance Costs Allowance for doubtful accounts Accounts Receivable, Credit Loss Expense (Reversal) Other Other Noncash Income (Expense) Changes in assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Inventories Increase (Decrease) in Inventories Accounts payable Increase (Decrease) in Accounts Payable Other assets and liabilities Increase (Decrease) in Other Operating Assets and Liabilities, Net Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities CASH FLOWS FROM INVESTING ACTIVITIES: Net Cash Provided by (Used in) Investing Activities [Abstract] Business acquisitions Additions of long-lived assets Payments to Acquire Property, Plant, and Equipment Net cash used for investing activities Net Cash Provided by (Used in) Investing Activities CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities [Abstract] Payments on long-term debt Repayments of Senior Debt Issuance of long-term debt Proceeds from Issuance of Long-term Debt Repurchases of common stock Payments for Repurchase of Common Stock Payments on revolving credit facility Repayments of Long-term Lines of Credit Borrowings on revolving credit facility Proceeds from Long-term Lines of Credit Dividend payments Payments of Dividends Debt financing fees Payments of Financing Costs Taxes paid related to net share settlement of equity awards Payment, Tax Withholding, Share-based Payment Arrangement Proceeds from exercise of stock options Proceeds from Stock Options Exercised Net cash used for financing activities Net Cash Provided by (Used in) Financing Activities Effect of exchange rate changes on cash Effect of Exchange Rate on Cash and Cash Equivalents Net decrease in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) 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 Supplemental disclosures: Supplemental Cash Flow Information [Abstract] Interest paid Interest Paid, Excluding Capitalized Interest, Operating Activities Income taxes paid Income Taxes Paid, Net 2019 Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year 2020 Lessee, Operating Lease, Liability, Payments, Due Year Two 2021 Lessee, Operating Lease, Liability, Payments, Due Year Three 2022 Lessee, Operating Lease, Liability, Payments, Due Year Four 2023 Lessee, Operating Lease, Liability, Payments, Due Year Five Thereafter Lessee, Operating Lease, Liability, Payments, Due after Year Five Total lease payments Lessee, Operating Lease, Liability, Payments, Due Less: Interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Present value of lease liabilities Operating Lease, Liability Income tax expense Effective tax rate Effective Income Tax Rate Reconciliation, Percent Product warranty liability, current Product warranty liability, non-current Derivative Instruments and their Impact on the Financial Condition Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] GOODWILL AND OTHER INTANGIBLE ASSETS Goodwill and Intangible Assets Disclosure [Text Block] Payables and Accruals [Abstract] Payroll and related costs Employee-related Liabilities, Current Sales allowances Sales Allowances Aggregate cash, product and warranty discount programs given by the entity for certain goods sold to customers. Accrued interest payable Interest Payable, Current Vendor buyback obligation Vendor Buyback Obligation Vendor buyback obligation. Taxes payable Taxes Payable, Current Vendor liability Vendor Liability, Current Vendor Liability, Current Defense price reduction reserve Defense Price Reduction Reserve Estimated reserve needed for price revisions for defense customers. Derivative liabilities Derivative Liability, Current Non-trade payables Non Trade Payable Current Non trade payable current. Lease liability Other accruals Other Sundry Liabilities, Current Total Changes in Accumulated Other Comprehensive Loss by Component Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS Related Party Transactions Disclosure [Text Block]