Accounting Policies [Abstract] Accounting Policies [Abstract] Accounts Payable Current Accounts payable Accounts Receivable Net Current Accounts receivables - net of allowance for doubtful accounts of $1.2 and $0.9, respectively Accretion for Predecessor product warranty. Accretion For Predecessor Liability Accretion (for Predecessor liabilities) Accumulated Defined Benefit Plans Adjustment [Member] Accumulated Defined Benefit Plans Adjustment Accumulated Net Unrealized Investment Gain Loss [Member] Accumulated Net Unrealized Investment Gain (Loss) Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income Loss [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income Loss Net Of Tax Total AOCL Beginning balance of AOCL Accumulated other comprehensive loss, net of tax Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income Loss [Table] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Translation Adjustment [Member] Accumulated Translation Adjustment Achieved senior secured leverage ratio. Achieved Senior Secured Leverage Ratio Achieved senior secured leverage ratio Achieved Total Leverage Ratio Achieved Total Leverage Ratio Achieved total leverage ratio Additional deferred financing fees recorded. Additional Deferred Financing Fees Recorded Additional deferred financing fees Additional Paid In Capital Paid in capital Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Add (deduct) items included in net income not using (providing) cash: After Amendment [Member] After Amendment [Member] After Amendment Allowance For Doubtful Accounts Receivable Current Allowance for doubtful accounts receivables Aluminum. Aluminum [Member] Aluminum Amendment agreement. Amendment Agreement [Member] Amendment Agreement Amendment Flag Amendment Flag Amendment [Member] Amendment [Member] Amendment Amortization Of Financing Costs Amortization of deferred financing costs Deferred financing fees Amortization Of Intangible Assets Amortization of intangible assets Amount of collateral recorded in other current assets. Amount Of Collateral Recorded In Other Current Assets Amount of collateral recorded in Other current assets Assets TOTAL ASSETS Assets [Abstract] ASSETS Assets and liabilities fair value disclosure. Assets And Liabilities Fair Value Disclosure Total Assets Current Total Current Assets Assets Current [Abstract] Current Assets Value of marketable securities held in trust set up for the sole purpose of distribution to participating employee in a deferred compensation plan. Assets Held In Trusts Rabbi trust assets Assets in service under grant program. Assets In Service Under Grant Program Assets in service under the Grant Program Available For Sale Securities Fair Value Disclosure Available-for-sale securities Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Basis of presentation and principles of consolidation. Basis Of Presentation And Principles Of Consolidation Policy [Text Block] Basis of Presentation and Principles of Consolidation Before Amendment [Member] Before Amendment [Member] Before Amendment Cash And Cash Equivalents At Carrying Value Cash and cash equivalents at end of period Cash and cash equivalents at beginning of period Cash and cash equivalents Cash And Cash Equivalents Fair Value Disclosure Cash and cash equivalents Cash And Cash Equivalents Period Increase Decrease Net increase (decrease) in cash and cash equivalents Class Of Stock [Domain] Class of Stock [Domain] Combinations of engine brands, models and ratings. Combinations Of Engine Brands Models And Ratings Combinations of engine brands, models and ratings Commitments And Contingencies Commitments and contingencies (see NOTE N) Commitments And Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Commitments And Contingencies Disclosure [Text Block] COMMITMENTS AND CONTINGENCIES Commodity Contract [Member] Commodity contracts Commodity Volume hedged. Commodity Volume Hedged Quantity Common Stock Dividends Per Share Declared Common stock dividend declared Dividends per common share Common Stock [Member] Common Stock Common Stock Par Or Stated Value Per Share Common stock, par value Common Stock Shares Authorized Common stock, shares authorized Common Stock Shares Issued Common stock, shares issued Common Stock Shares Outstanding Common stock, shares outstanding Common Stock Value Common stock Compensation And Employee Benefit Plans [Text Block] EMPLOYEE BENEFIT PLANS Compensation And Retirement Disclosure [Abstract] Compensation and Retirement Disclosure [Abstract] Component Of Other Expense Nonoperating [Line Items] Component of Other Expense, Nonoperating [Line Items] Component Of Other Expense Nonoperating [Table] Component of Other Expense, Nonoperating [Table] Components of Other Income (Expense) [Line Items] Components Of Other Income Expense [Line Items] Components of Other Income (Expense) [Line Items] Components of Other Income (Expense) [Table] Components Of Other Income Expense [Table] Components of Other Income (Expense) [Table] Comprehensive Income Net Of Tax Comprehensive income Comprehensive Income Note [Text Block] ACCUMULATED OTHER COMPREHENSIVE LOSS Computation Of Earnings Per Share Line Items Computation Of Earnings Per Share [Line Items] Computation Of Earnings Per Share Line Items Cost Of Goods Sold Cost of sales Cost Of Sales [Member] Cost of Sales Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Credit Facility Refinanced Amount Credit Facility Refinanced Amount Credit facility refinanced amount Credit facility refinance description. Credit Facility Refinance Description Credit facility refinance description Current Fiscal Year End Date Current Fiscal Year End Date Customer relationships - commercial. Customer Relationships Commercial [Member] Customer relationships - commercial Customer Relationships Defense [Member] Customer Relationships Defense [Member] Customer relationships - defense Debt Agreement [Axis] Debt Agreement [Axis] Debt Agreement [Axis] Debt Agreement [Domain] Debt Agreement [Domain] Debt Agreement [Domain] Debt Amendments [Axis] Debt Amendments [Axis] Debt Amendments [Axis] Debt Amendments [Domain] Debt Amendments [Domain] Debt Amendments [Domain] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Text Block] DEBT Debt Instrument Basis Spread On Variable Rate Applicable margin over base rate Debt Instrument Description Of Variable Rate Basis Variable interest rate, description Debt Instrument Face Amount Principal amount of the term loan Debt Instrument Interest Rate by Interest Type [Axis] Debt Instrument Interest Rate By Interest Type [Axis] Debt Instrument Interest Rate by Interest Type [Axis] Debt Instrument Interest Rate by Interest Type [Domain] Debt Instrument Interest Rate By Interest Type [Domain] Debt Instrument Interest Rate by Interest Type [Domain] Debt Instrument Interest Rate Effective Percentage Total interest rate for term loan Debt Instrument Interest Rate Stated Percentage Interest rate of Senior Notes Principal amount percent Senior Notes Debt Instrument [Line Items] Debt Instrument [Line Items] Debt instrument london inter bank offering rate margin rate. Debt Instrument London Inter Bank Offering Rate Margin Rate LIBOR margin rate Debt Instruments Maturity Date Month and Year Debt Instruments Maturity Date Month And Year Senior Secured Credit Facility Term B-1, due date Debt Instrument [Table] Schedule of Long-term Debt Instruments [Table] Defense Price Reduction Reserve Defense Price Reduction Reserve Defense price reduction reserve Deferred Compensation Cashbased Arrangements Liability Current And Noncurrent Deferred compensation obligation Deferred financing fees expensed as a result of debt extinguishment. Deferred Financing Fees Expensed Deferred financing fees Deferred Income Tax Expense Benefit Deferred income taxes Deferred Revenue Ending balance Beginning balance Deferred Revenue Deferred Revenue Additions Increases Deferred Revenue By Arrangement Disclosure [Text Block] Computation of Deferred Revenue for Extended Transmission Coverage Activity Deferred Revenue Current Deferred revenue Deferred Revenue Noncurrent Deferred revenue Deferred revenue non-current liabilities Deferred Revenue Revenue Recognized Revenue earned Deferred Tax Assets Net Current Deferred income taxes, net Deferred Tax Assets Net Noncurrent Deferred income taxes, net Deferred Tax Liabilities Noncurrent Deferred income taxes Defined Benefit Plan Amortization Of Gains Losses Loss Defined Benefit Plan Amortization Of Prior Service Cost Credit Prior service cost Defined Benefit Plan, Benefit Obligation, Interest Cost Defined Benefit Plan Benefit Obligation Interest Cost Interest cost Defined Benefit Plan Expected Return On Plan Assets Expected return on assets Defined Benefit Plan Net Periodic Benefit Cost Net periodic benefit cost Defined Benefit Plans Disclosures Defined Benefit Plans [Axis] Defined Benefit Plans and Other Postretirement Benefit Plans [Axis] Defined Benefit Plans [Domain] Defined Benefit Plans and Other Postretirement Benefit Plans [Domain] Defined Benefit Plan Service Cost Service cost Depreciation Depreciation of property, plant and equipment Depreciation related to grant program. Depreciation Related To Grant Program Grant Program, related depreciation Derivative Asset Fair Value Net Derivative Assets, Fair Value Derivative Assets Derivative assets Derivative By Nature [Axis] Derivative, by Nature [Axis] Derivative Contract Type [Domain] Derivative Contract Type [Domain] Derivative Fair Value Of Derivative Net Fair value Total derivatives not designated as hedging instruments Derivative Financial Instruments Liabilities Fair Value Disclosure Derivative liabilities Derivative Instrument Risk [Axis] Derivative Instrument Risk [Axis] Derivative Instruments And Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments And Hedging Activities Disclosure [Text Block] DERIVATIVES Derivative Instruments Gain Loss By Hedging Relationship By Income Statement Location By Derivative Instrument Risk [Table] Derivative Instruments, Gain (Loss) by Hedging Relationship, by Income Statement Location, by Derivative Instrument Risk [Table] Derivative Instruments Gain Loss [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Derivative instruments not designated as hedging instruments at fair value net. Derivative Instruments Not Designated As Hedging Instruments At Fair Value Net Fair value of the derivative Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net Total gain (loss) recognized on derivatives not designated as hedging instruments Derivative Instruments Not Designated As Hedging Instruments Liability At Fair Value Fair Value Derivative Liabilities Current Derivative liabilities Derivative Liability Fair Value Net 1 Derivative liability, Fair Value Derivative [Line Items] Derivative [Line Items] Derivative Name [Domain] Derivative, Name [Domain] Derivative Notional Amount Notional Amount Derivatives Fair Value [Line Items] Derivatives, Fair Value [Line Items] Derivative [Table] Derivative [Table] Different product models. Different Product Models Different product models Different vehicle configurations. Different Vehicle Configurations Different vehicle configurations Dividend Declared [Member] Dividend Declared Document Documentand Entity Information [Abstract] Document Documentand Entity Information [Abstract] Document Documentand Entity Information [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Document Fiscal Year Focus Document Fiscal Year Focus Document Information [Line Items] Document Information [Line Items] Document Period End Date Document Period End Date Document Type Document Type Early Repayment Of Subordinated Debt Repurchases and redemptions of long-term debt Earnings Per Share [Abstract] Earnings Per Share [Abstract] Earnings Per Share Basic Basic earnings per share attributable to common stockholders Earnings Per Share Diluted Diluted earnings per share attributable to common stockholders Earnings Per Share [Table] Earnings Per Share [Table] Earnings Per Share [Table] Earnings Per Share [Text Block] EARNINGS PER SHARE Effective Income Tax Rate Continuing Operations Effective tax rate Effect Of Exchange Rate On Cash And Cash Equivalents Effect of exchange rate changes on cash Employee Related Liabilities Current Payroll and related costs Entities [Table] Entities [Table] Entity Central Index Key Entity Central Index Key Entity Common Stock Shares Outstanding Entity Common Stock, Shares Outstanding Entity [Domain] Entity [Domain] Entity Filer Category Entity Filer Category Entity Registrant Name Entity Registrant Name Equity [Abstract] Equity [Abstract] Equity Component [Domain] Equity Component [Domain] Excess Tax Benefit From Share Based Compensation Financing Activities Excess tax benefit on stock-based compensation Excess Tax Benefit From Share Based Compensation Operating Activities Excess tax benefit from stock-based compensation Executive vice president chief financial officer and treasurer. Executive Vice President Chief Financial Officer And Treasurer [Member] David Graziosi Extended period of amortization on deferred financing fees. Extended Period Of Amortization On Deferred Financing Fees Extended period of amortization on deferred financing fees Deferred financing fees for which the amortization period was extended as a result of debt modification Extension Of Deferred Financing Fees Deferred financing fees for which the amortization period was extended as a result of debt modification 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] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value By Fair Value Hierarchy Level [Axis] Fair Value, Hierarchy [Axis] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Fair Value Disclosures [Text Block] FAIR VALUE OF FINANCIAL INSTRUMENTS Fair Value Inputs Level 1 [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) Fair Value Inputs Level 2 [Member] Significant Other Observable Inputs (Level 2) Fair Value Measurements Fair Value Hierarchy [Domain] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Values Derivatives Balance Sheet Location By Derivative Contract Type By Hedging Designation [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Finite Lived Intangible Assets Accumulated Amortization Accumulated amortization Finite Lived Intangible Assets Amortization Expense After Year Five Thereafter Finite Lived Intangible Assets Amortization Expense Next Twelve Months 2014 Finite Lived Intangible Assets Amortization Expense Year Five 2018 Finite Lived Intangible Assets Amortization Expense Year Four 2017 Finite Lived Intangible Assets Amortization Expense Year Three 2016 Finite Lived Intangible Assets Amortization Expense Year Two 2015 Finite-Lived Intangible Assets And Liabilities [Line Items] Finitelived Intangible Assets And Liabilities [Line Items] Finite-Lived Intangible Assets And Liabilities [Line Items] Finite Lived Intangible Assets By Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite Lived Intangible Assets Gross Intangible assets, gross Finite Lived Intangible Assets Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite Lived Intangible Assets Net Intangible assets, net Foreign Currency Contracts Liability Fair Value Disclosure Foreign currency contracts outstanding Foreign Currency Forward Contract [Member] Foreign Currency Forward Contract [Member] Foreign Currency Forward Contract Foreign Currency Transaction Gain Loss Before Tax Gain on foreign exchange Foreign Exchange Contract [Member] Foreign currency contracts Gain Loss On Contract Termination Termination of Sponsors (defined below) services agreement Gain Loss On Derivative Instruments Net Pretax Realized (loss) gain on derivative contracts Gains Losses On Extinguishment Of Debt Loss on repurchases and redemptions of long-term debt Loss on repurchases and redemptions of long-term debt Goodwill Goodwill Goodwill And Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Line Items] Goodwill And Intangible Assets Disclosure [Line Items] Goodwill and Intangible Assets Disclosure [Line Items] Goodwill And Intangible Assets Disclosure [Text Block] GOODWILL AND OTHER INTANGIBLE ASSETS Goodwill [Line Items] Goodwill [Line Items] Grant Program income. Grant Program Income Grant Program income Gross Profit Gross profit Guarantee Obligations [Line Items] Guarantor Obligations [Line Items] Guarantees [Abstract] Guarantees [Abstract] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Impairment Of Ongoing Project Impairment loss on investments in technology-related initiatives Impairment loss on investments in technology-related initiatives Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest Income before income taxes Income before income taxes Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Income Tax Disclosure [Text Block] INCOME TAXES Income Taxes [Line Items] Income Taxes [Line Items] Income Taxes [Line Items] Income Taxes Paid Income taxes paid Income Taxes [Table] Income Taxes [Table] Income Taxes [Table] Income Tax Expense Benefit Tax expense Income tax expense Income Tax Expense Benefit Continuing Operations Tax expense Increase Decrease In Accounts Payable Accounts payable Increase Decrease In Accounts Receivable Accounts receivable Increase Decrease In Collateral Held Under Securities Lending Collateral for interest rate derivatives Increase Decrease In Inventories Inventories Increase Decrease In Operating Capital [Abstract] Changes in assets and liabilities: Increase Decrease In Other Operating Capital Net Other assets and liabilities Incremental Common Shares Attributable To Share Based Payment Arrangements Dilutive effect stock-based awards Indefinite Lived Trade Names Trade name Independent distributor and dealer in worldwide locations. Independent Distributor And Dealer In Worldwide Locations Independent distributor and dealer in worldwide locations Initial public offering fees and expenses. Initial Public Offering Fees And Expenses Initial public offering fees and expenses Intangible Assets Excluding Goodwill Gross Intangible Assets Excluding Goodwill Gross Intangible assets, gross Intangible Assets Net Excluding Goodwill Intangible assets, net Intangible Assets Net Including Goodwill Net carrying value of Goodwill and other intangible assets Interest Expense [Member] Interest expense The cost of borrowed funds, hedge interest, and mark to market adjustments on interest rate swaps accounted for as interest expense charged against earnings during the period. Interest Expenses Interest expense Interest Paid Interest paid Interest Payable Current Accrued interest payable Interest Rate Contract [Member] Interest rate contracts Interest Rate Derivatives At Fair Value Net Fair Value Interest Rate Swap D, due 2013. Interest Rate Swap D Due Two Thousand Thirteen [Member] Interest Rate Swap D, due 2013 Interest Rate Swap E, due 2013. Interest Rate Swap E Due Two Thousand Thirteen [Member] Interest Rate Swap E, due 2013 Interest rate swap f due two thousand thirteen [Member] Interest Rate Swap F Due Two Thousand Thirteen [Member] Interest Rate Swap F, due 2013 Interest rate swap g due two thousand and thirteen. Interest Rate Swap G Due Two Thousand Thirteen [Member] Interest Rate Swap G, due 2013 Interest rate swap h due two thousand fourteen. Interest Rate Swap H Due Two Thousand Fourteen [Member] Interest Rate Swap H, due 2014 Interest rate swap I due two thousand fourteen. Interest Rate Swap I Due Two Thousand Fourteen [Member] Interest Rate Swap I, due 2014 Interest rate swap j due two thousand fourteen. Interest Rate Swap J Due Two Thousand Fourteen [Member] Interest Rate Swap J, due 2014 Interest rate swap k due two thousand fourteen. Interest Rate Swap K Due Two Thousand Fourteen [Member] Interest Rate Swap K, due 2014 Interest Rate Swap [Member] Interest Rate Swap Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Inventory Disclosure [Text Block] INVENTORIES Inventory Finished Goods Net Of Reserves Finished goods Inventory Net Inventories Total inventories Inventory Parts And Components Net Of Reserves Purchased parts and raw materials Inventory Work In Process Net Of Reserves Work in progress Investment Income Interest Interest income Japanese Yen [Member] Japanese Yen [Member] Japanese Yen Legal Entity [Axis] Legal Entity [Axis] Maximum amount of letters of credit commitments available under the revolving credit facility. Letters Of Credit Commitment Amount Maximum Maximum amount of letters of credit commitments available under the revolving credit facility Letters Of Credit Outstanding Amount Letters of Credit Liabilities TOTAL LIABILITIES Liabilities [Abstract] LIABILITIES Liabilities And Stockholders Equity TOTAL LIABILITIES & STOCKHOLDERS' EQUITY Liabilities Current Total Current Liabilities Liabilities Current [Abstract] Current Liabilities Line Of Credit Facility Commitment Fee Percentage Line of Credit Facility, commitment fee percentage Line Of Credit Facility Expiration Date 1 Senior Secured Credit Facility, maturity date Senior secured credit facility, extended maturity date. Line Of Credit Facility Extended Maturity Date Senior Secured Credit Facility, extended maturity date Line Of Credit Facility Increase Additional Borrowings Extended Senior Secured Credit Facility, principal amount Line Of Credit Facility Interest Rate At Period End Revolving credit borrowings, interest rate Line Of Credit Facility Maximum Amount Outstanding During Period Maximum amount outstanding at any time on the revolving credit facility Line Of Credit Facility Maximum Borrowing Capacity Revolving credit borrowings Line Of Credit Facility Periodic Payment Principal Principal payments on term loans Line Of Credit Facility Remaining Borrowing Capacity Available revolving credit facility Line Of Credit [Member] Line of Credit LIBOR [Member] London Interbank Offered Rate [Member] LIBOR Long Term Debt Long-term debt Total long-term debt Long Term Debt Current Current portion of long-term debt Less: current maturities of long-term debt Long term debt current and non-current. Long Term Debt Current And Non Current Senior Notes, indebtedness associated with Allison Transmission Inc. Total long-term debt Long Term Debt Fair Value Fair value of long-term debt obligations Long Term Debt Noncurrent Total long-term debt less current portion Longterm Debt Type [Axis] Long-term Debt, Type [Axis] Longterm Debt Type [Domain] Long-term Debt, Type [Domain] Longterm Debt Weighted Average Interest Rate Weighted average rate on the Senior Secured Credit Facility Marketable Securities Realized Gain Loss Other Than Temporary Impairments Amount Impairment loss on investment in technology-related initiatives Maturity date of revolving credit borrowings. Maturity Date Of Revolving Credit Borrowings Maturity date of revolving credit borrowings Maximum [Member] Maximum Minimum [Member] Minimum Natural Gas. Natural Gas [Member] Natural Gas Nature Of Operations OVERVIEW Net Cash Provided By Used In Financing Activities Net cash provided by (used for) financing activities Net Cash Provided By Used In Financing Activities [Abstract] CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided By Used In Investing Activities Net cash used for investing activities Net Cash Provided By Used In Investing Activities [Abstract] CASH FLOWS FROM INVESTING ACTIVITIES: Net Cash Provided By Used In Operating Activities Net cash provided by operating activities Net Cash Provided By Used In Operating Activities [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES: Net Income Loss Net income Net income Net of tax New Accounting Pronouncements Policy Policy [Text Block] Recently Issued Accounting Pronouncements Noncompete Agreements [Member] Non-compete agreement Nondesignated [Member] Derivatives not designated as hedging instruments Nonoperating Income Expense Other expense, net Total Nonvoting Common Stock [Member] Non-voting Common Stock Notes Payable Current Notes payable Notes Payable Related Parties Noncurrent Senior notes held by executive officers Notional Amount Of Foreign Currency Derivatives Notional Amount Notional Amount Of Interest Rate Derivatives Notional Amount Number of employees. Number Of Employees Number of employees Operating Income Loss Operating income Organization Consolidation And Presentation Of Financial Statements Disclosure And Significant Accounting Policies [Text Block] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES 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] 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] Other Accrued Liabilities Current Other accruals Other Assets Current Other current assets Other Assets [Member] Other current and non-current assets Other Assets Noncurrent Other non-current assets Other Cash Equivalents At Carrying Value Deposited in operating accounts Amount after tax, before reclassification adjustments of other comprehensive income (loss). Other Comprehensive Income Loss Before Reclassifications Net Of Tax Other comprehensive income before reclassifications Other Comprehensive Income Loss Net Of Tax Net current period other comprehensive income Other Comprehensive (Income) Loss, Reclassification Adjustment from Accumulated Other Comprehensive Income, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Before Tax Other Comprehensive Income Loss Reclassification Adjustment From Accumulated Other Comprehensive Income Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax Actuarial loss Other Comprehensive (Income) Loss, Reclassification Adjustment from Accumulated Other Comprehensive Income, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), Before Tax Other Comprehensive Income Loss Reclassification Adjustment From Accumulated Other Comprehensive Income Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax Prior service cost Other Current Assets [Member] Other Current Assets Other Current Liabilities [Line Items] Other Current Liabilities [Line Items] Other Current Liabilities [Line Items] Other current liabilities. Other Current Liabilities [Member] Other Current Liabilities Other Current Liabilities [Table] Other Current Liabilities [Table] Other Current Liabilities [Table] Other expense income. Other Expense Income Net [Member] Other expense, net Other Income And Expenses [Abstract] Other Income and Expenses [Abstract] Other Income And Other Expense Disclosure [Text Block] OTHER EXPENSE, NET Other Inventory Net Of Reserves Service parts Other Liabilities Current Other current liabilities Total Other Liabilities Disclosure [Abstract] Other Liabilities Disclosure [Abstract] Other Liabilities Disclosure [Text Block] OTHER CURRENT LIABILITIES Other Liabilities [Member] Other current and non-current liabilities Other Liabilities Noncurrent Other non-current liabilities Other Noncash Income Expense Other Other Non Current Asset [Member] Other Non Current Asset [Member] Other Non Current Asset Other non-current assets. Other Noncurrent Assets [Member] Other non-current Assets Other non-current liabilities. Other Noncurrent Liabilities [Member] Other non-current liabilities Other Nonoperating Income Expense Other Other Party [Member] Other Party [Member] ETC (extended transmission coverage) Other Postretirement Benefit Plans Defined Benefit [Member] Post-retirement Benefits Ownership Percentage by Related Parties Ownership Percentage By Related Parties Percentage the of Company's equity owned by affiliates Parties To Contractual Arrangement [Axis] Parties to Contractual Arrangement [Axis] Parties To Contractual Arrangement [Member] Parties to Contractual Arrangement [Domain] Patented technology - commercial. Patented Technology Commercial [Member] Patented technology - commercial Patented Technology Defense [Member] Patented Technology Defense [Member] Patented technology - defense Payables And Accruals [Abstract] Payables and Accruals [Abstract] Payments Of Debt Restructuring Costs Deferred financing fees Debt financing fees Payments Of Dividends Dividend payments Payments To Acquire Other Investments Payment for expansion of transmission technologies Payments To Acquire Projects Investments in technology-related initiatives Payments To Acquire Property Plant And Equipment Additions of long-lived assets Pension Plans Defined Benefit [Member] Pension Plans Percentage of annual excess cash flow for pre payment of loan. Percentage Of Annual Excess Cash Flow For Pre Payment Of Loan Annual excess cash flow to prepay term loan Preferred Stock Par Or Stated Value Per Share Preferred stock, par value Preferred Stock Shares Authorized Preferred stock, shares authorized Preferred Stock Shares Issued Preferred stock, shares issued Preferred Stock Shares Outstanding Preferred stock, shares outstanding Preferred Stock Value Preferred stock, $0.01 par value, 100,000,000 shares authorized, none issued and outstanding President and chief executive officer. President And Chief Executive Officer [Member] Lawrence Dewey Prime Rate or Federal Funds Rate [Member] Prime Rate Or Federal Funds Rate [Member] Prime Rate or Federal Funds Rate Proceeds From Sale Of Property Plant And Equipment Proceeds from disposal of assets Proceeds From Stock Options Exercised Proceeds from exercise of stock options Product Warranty Accrual Ending balance Beginning balance Product Warranty Accrual Classified Current Product warranty liability Product warranty liability, current Product Warranty Accrual Noncurrent Product warranty liability Product warranty liability, non-current Product Warranty Accrual Payments Payments Product Warranty Accrual Preexisting Increase Decrease Net adjustments to liability Product Warranty Accrual Warranties Issued Increase in liability (warranty issued during period) Product Warranty Disclosure [Text Block] PRODUCT WARRANTY LIABILITIES Property Plant And Equipment Net Property, plant and equipment, net Proprietary technology. Proprietary Technology [Member] Proprietary technology Range [Axis] Range [Axis] Range [Member] Range [Domain] Amount after tax of reclassification adjustments of other comprehensive income (loss). Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax Amounts reclassified from AOCL Reclassification out of Accumulated Other Comprehensive Income [Axis] 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] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Member] Reclassification Out Of Accumulated Other Comprehensive Income [Member] Reclassification out of Accumulated Other Comprehensive Income Reduction of the basis of capital assets purchased under grant program. Reduction Of Basis Of Capital Assets Purchased Under Grant Program Reduction of basis of capital assets purchased under Grant program Refinancing Of Debt [Member] Refinancing of Debt Related Party [Domain] Related Party [Domain] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Related Party Transactions [Abstract] Related Party Transactions [Abstract] Related Party Transactions By Related Party [Axis] Related Party [Axis] Related Party Transactions Disclosure [Text Block] CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS Repayments Of Notes Payable Payments on notes payable Repayments Of Senior Debt Payments on long-term debt Research And Development Expense Engineering - research and development Research And Development Expense [Member] Research and Development Expense Research and development payable. Research And Development Payable Research and development payable Retained Earnings Accumulated Deficit Accumulated deficit Revolving Credit Facility [Member] Revolving Credit Facility Sales allowances. Sales Allowances Sales allowances Sales Revenue Goods Net Net sales Sales Revenue Goods Net Percentage Total revenues generated in North America Scenario 1 [Member] Scenario One [Member] If leverage ratio is above 3.50 Scenario Unspecified [Domain] Scenario, Unspecified [Domain] Schedule Of Accumulated Other Comprehensive Income Loss Table [Text Block] Accumulated Other Comprehensive Income or Loss 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 [Table] Schedule Of Debt Instruments [Text Block] Summary of Long-term debt and maturities Schedule Of Derivative Instruments In Statement Of Financial Position Fair Value [Text Block] Derivative Instruments and their Impact on Financial Condition Schedule of derivative instruments in statement of result of operations gain loss recognized on derivatives. Schedule Of Derivative Instruments In Statement Of Result Of Operations Gain Loss Recognized On Derivatives Table [Text Block] Derivative Instruments and Their Impact on Results of Operations Schedule Of Derivative Instruments [Text Block] Notional amount and fair value of derivatives Schedule Of Earnings Per Share Reconciliation Table [Text Block] Reconciliation of Numerators and Denominators Used to Calculate Basic EPS and Diluted EPS Schedule of Employee Benefit Plans [Line Items] Schedule Of Employee Benefit Plans [Line Items] Schedule of Employee Benefit Plans [Line Items] Schedule of Employee Benefit Plans [Table] Schedule Of Employee Benefit Plans [Table] Schedule of Employee Benefit Plans [Table] Schedule Of Fair Value Assets And Liabilities Measured On Recurring Basis Table [Text Block] Summary of Fair Value of Financial Assets and (Liabilities) Scheduleof Finite Lived Intangible Assets Future Amortization Expense Table [Text Block] Amortization Expense Related to Other Intangible Assets for Next Five Years and Thereafter Schedule Of Finite Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Schedule Of Goodwill [Table] Schedule of Goodwill [Table] Schedule Of Guarantee Obligations [Table] Schedule of Guarantor Obligations [Table] Schedule Of Intangible Assets And Goodwill Table [Text Block] Summary of Goodwill and Other Intangible Assets Schedule Of Interest Rate Derivatives Table [Text Block] Summary of Company's Interest Rate Derivatives Schedule Of Inventory Current Table [Text Block] Components of Inventories Schedule of Inventory [Line Items] Schedule Of Inventory [Line Items] Schedule of Inventory [Line Items] Schedule of Inventory [Table] Schedule Of Inventory [Table] Schedule of Inventory [Table] Schedule Of Net Benefit Costs Table [Text Block] Net Periodic Benefit Costs Schedule Of Other Assets And Other Liabilities Table [Text Block] Summary of Other Current Liabilities Schedule Of Other Nonoperating Income Expense Table [Text Block] Computation of Other Expense, Net Schedule Of Product Warranty Liability Table [Text Block] Summary of Product Warranty Liability Activities Schedule Of Related Party Transactions By Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Selling General And Administrative Expense Selling, general and administrative expenses Selling General And Administrative Expenses [Member] Selling, General and Administrative Expenses Senior cash pay notes, fixed due date. Senior Cash Pay Notes Fixed Due Date Senior cash pay notes, fixed due date Senior cash pay notes fixed seven point one two five percent due two thousand nineteen. Senior Cash Pay Notes Fixed Seven Point One Two Five Percent Due Two Thousand Nineteen [Member] Senior Cash Pay Notes, fixed 7.125%, due 2019 Senior Notes [Member] Senior Notes Senior Secured Credit Facility [Member] Senior Secured Credit Facility [Member] Senior Secured Credit Facility Senior Secured Credit Facility Term B-1, Due date. Senior Secured Credit Facility Term B One Due Date Senior Secured Credit Facility Term B-1, due date Senior secured credit facility term b one loan variable due two thousand fourteen. Senior Secured Credit Facility Term B One Loan Variable Due Two Thousand Fourteen [Member] Senior Secured Credit Facility Term B-1 Loan, variable, due 2014 Senior Secured Credit Facility Term B-3, Due date. Senior Secured Credit Facility Term B Three Due Date Senior Secured Credit Facility Term B-3, due date Senior secured credit facility term b three loan variable due two thousand nineteen. Senior Secured Credit Facility Term B Three Loan Variable Due Two Thousand Nineteen [Member] Senior Secured Credit Facility Term B-3 Loan, variable, due 2019 Senior secured credit facility Term B-2 due date. Senior Secured Credit Facility Term B Two Due Date Senior secured credit facility term B-2, due date Senior secured credit facility term b two loan variable due two thousand seventeen. Senior Secured Credit Facility Term B Two Loan Variable Due Two Thousand Seventeen [Member] Senior Secured Credit Facility Term B-2 Loan, variable, due 2017 Senior Secured Credit Facility Term B Three Loan Due Two Thousand Nineteen [Member] Senior Secured Credit Facility Term Three Loan Due Two Thousand Nineteen [Member] Senior Secured Credit Facility Term B-3 Loan, due 2019 Senior Secured Credit Facility Term B Two Loan Due Two Thousand Seventeen [Member] Senior Secured Credit Facility Term Two Loan Due Two Thousand Seventeen [Member] Senior Secured Credit Facility Term B-2 Loan, due 2017 Seven point one two five percent senior notes. Seven Point One Two Five Percent Senior Notes [Member] Fixed 7.125% Senior Notes Share Based Compensation Stock-based compensation Statement Class Of Stock [Axis] Class of Stock [Axis] Statement Equity Components [Axis] Equity Components [Axis] Statement [Line Items] Statement [Line Items] Statement Of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Statement Of Financial Position [Abstract] Statement of Financial Position [Abstract] Statement Of Income And Comprehensive Income [Abstract] Statement of Other Comprehensive Income [Abstract] Statement Scenario [Axis] Scenario [Axis] Statement [Table] Statement [Table] Steel. Steel [Member] Steel Stockholders Equity TOTAL STOCKHOLDERS' EQUITY Stockholders Equity [Abstract] STOCKHOLDERS' EQUITY Subsequent Event [Line Items] Subsequent Event [Line Items] Subsequent Events [Abstract] Subsequent Events [Abstract] Subsequent Events [Text Block] SUBSEQUENT EVENTS Subsequent Event [Table] Subsequent Event [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsidiaries [Member] Allison Transmission Inc. Supplemental Cash Flow Information [Abstract] Supplemental disclosures: Taxes Payable Current Taxes payable Text Block [Abstract] Text Block [Abstract] Tooling rights. Tooling Rights [Member] Tooling rights Trading Symbol Trading Symbol Transmission product lines. Transmission Product Lines Transmission product lines Treasury Stock Value Treasury stock Unrealized Gain Loss On Derivatives Unrealized gain on derivatives Unrealized Gain Loss On Derivatives And Commodity Contracts Unrealized gain (loss) on derivative contracts Use Of Estimates Use of Estimates U S Government Contracts [Member] U S Government Contracts [Member] U S Government Contracts U S Government Securities At Carrying Value Investement in U.S. government backed securities Vendor buyback obligation. Vendor Buyback Obligation Vendor buyback obligation Vice president human resource. Vice President Human Resource [Member] Robert M. Price Weighted Average Number Of Diluted Shares Outstanding Diluted weighted average shares of common stock outstanding Weighted Average Number Of Shares Outstanding Basic Weighted average shares of common stock outstanding Year of introduction of company automatic products. Year Of Introduction Of Company Automatic Products Year of introduction of Company's automatic products