Intangible assets Deferred Tax Liabilities, Intangible Assets Target allocations Defined Benefit Plan, Plan Assets, Target Allocation, Percentage Effect of foreign currency and other Policy, product warranty and recall campaigns and - Currency translation and other increase (decrease) Increase or Decrease in standard product warranty liability and related liabilities due to currency translation and other. Does not include any Increase or Decrease in an extended product warranty liability due to currency translation. Foreign Currency Transactions and Translation [Abstract] Foreign Currency [Abstract] Change in benefit obligations Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] Estimated contributions in next fiscal year Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year Series A Preferred Stock Series A Preferred Stock [Member] Related Party [Axis] Related Party [Axis] Germany GERMANY Change in plan assets Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] Equity Investments Equity Method Investments and Non-Equity Method Investments [Policy Text Block] Equity Method Investments and Non-Equity Method Investments [Policy Text Block] Stock Incentive Awards Units Outstanding (Roll Forward) Share-based Compensation Arrangement by Share-based Payment Award, Option and Non-Option Equity Instruments, Outstanding [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Option and Non-Option Equity Instruments, Outstanding [Roll Forward] Change in tax laws Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount Statistical Measurement [Domain] Statistical Measurement [Domain] LIABILITIES AND EQUITY Liabilities and Equity [Abstract] 2025 Lessor, Operating Lease, Payment to be Received, Year Five Stock Incentive Plans [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Dividends to noncontrolling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Investment amount Payments to Acquire Interest in Subsidiaries and Affiliates Preferred Stock Preferred Stock [Member] Net cash used in investing activities – continuing operations Net Cash Provided by (Used in) Investing Activities, Continuing Operations Security Exchange Name Security Exchange Name Beginning fair value of plan assets Ending fair value of plan assets Net plan assets Defined Benefit Plan, Plan Assets, Amount Total current liabilities Current liabilities Liabilities, Current Performance Share Units (PSUs) Performance Shares [Member] Percent Financing Receivable, Percent Past Due 2025 Defined Benefit Plan, Expected Future Benefit Payment, Year Five Allowed general unsecured claims amount Motors Liquidation Company GUC Trust, Material Contingent Liabilities, General Unsecured Claims, Threshold Amount Motors Liquidation Company GUC Trust, Material Contingent Liabilities, General Unsecured Claims, Threshold Amount ASSETS Assets [Abstract] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Investment, Name [Axis] Investment, Name [Axis] Investment, Name [Axis] Accounting Policies [Abstract] Accounting Policies [Abstract] Payments for operating leases Operating Lease, Payments Three Year Revolving Credit Facility April 2022 Three Year Revolving Credit Facility April 2022 [Member] Three Year Revolving Credit Facility April 2022 [Member] 2021 Lessee, Operating Lease, Liability, to be Paid, Year One Other Other Accrued Liabilities, Noncurrent Leased vehicle income Lease Income Cash payments Discontinued Operation, Amount of Continuing Cash Payments after Disposal Discontinued Operation, Amount of Continuing Cash Payments after Disposal 2024 Lessee, Operating Lease, Liability, to be Paid, Year Four Automotive purchases, net Related Party Transaction, Purchases from Related Party Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Unrecognized compensation expense Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Long-term debt (Note 13) GM Financial long-term debt Long-term Debt and Lease Obligation New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Canada CANADA U.S. state and local Current State and Local Tax Expense (Benefit) Maximum liability, guarantees Guarantees - maximum liability Guarantor Obligations, Maximum Exposure, Undiscounted Preferred stock issued Preferred Stock, Value, Issued Diluted earnings per common share – continuing operations (in dollars per share) Income (Loss) from Continuing Operations, Per Diluted Share Administrative expenses and Pension Benefit Guarantee Corporation premiums Defined Benefit Plan, Benefit Obligation, Administrative Expenses and Guarantee Premiums Defined Benefit Plan, Benefit Obligation, Administrative Expenses and Guarantee Premiums Impairment charges Tangible Asset Impairment Charges Diluted loss per common share – discontinued operations (in dollars per share) Diluted loss per common share – discontinued operations (in dollars per share) Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share Other comprehensive income, net of tax (Note 20) Other Comprehensive Income (Loss), Net of Tax [Abstract] Common stock par value (in dollars per share) Common Stock, Par or Stated Value Per Share Opel/Vauxhall Business Opel/Vauxhall Business [Member] Opel/Vauxhall Business [Member] 2023 Defined Benefit Plan, Expected Future Benefit Payment, Year Three Other liabilities (Note 12) Total other liabilities Other Liabilities, Noncurrent Deferred income taxes (Note 17) Deferred Income Tax Assets, Net Interest income Investment Income, Nonoperating Operating Activities [Axis] Operating Activities [Axis] Brazil BRAZIL AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] Proceeds from issuance of debt (original maturities greater than three months) Proceeds from Debt, Maturing in More than Three Months Advertising and promotion expenditures Marketing and Advertising Expense Effect of exchange rate changes on cash, cash equivalents and restricted cash Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Inventories (Note 6) Total inventories Inventory, Net Payment for annuity purchase Defined Benefit Plan, Benefit Obligation, Payment for Settlement Income from continuing operations Income from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Greater-than-60 days Financing Receivables, Greater than 60 Days Past Due [Member] Financing receivables that are greater than 60 days past due. Total, Not Past Due Financing Receivable, Not Past Due Expiration period Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Fair Value of Plan Assets Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Plan Assets Committed capital contributions Long-term Purchase Commitment, Amount Statement [Line Items] Statement [Line Items] Statement [Line Items] Service-based Employee Stock Options Service-based Employee Stock Options [Member] Service-based Employee Stock Options [Member] Class of Stock [Domain] Class of Stock [Domain] Weighted-average interest rate on outstanding long-term debt Long-term Debt, Weighted Average Interest Rate, at Point in Time Debt term Debt Instrument, Term SoftBank Vision Fund (AIV M2), L.P. SoftBank Vision Fund (AIV M2), L.P. [Member] SoftBank Vision Fund (AIV M2), L.P. [Member] Prime – FICO score 680 and greater FICO Score, Greater than 680 [Member] FICO Score, Greater than 680 [Member] Statement [Table] Statement [Table] Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table] Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table] Product Warranty and Recall Campaigns Standard Product Warranty, Policy [Policy Text Block] GM Brazil Indirect Tax Claim GM Brazil Indirect Tax Claim [Member] GM Brazil Indirect Tax Claim [Member] Type of Restructuring [Domain] Type of Restructuring [Domain] Interest cost Defined Benefit Plan, Interest Cost Statistical Measurement [Axis] Statistical Measurement [Axis] Total restricted cash Restricted Cash and Money Market Funds Restricted Cash and Cash Equivalents and Money Market Funds Operating loss and tax credit carryforwards Deferred Tax Assets, Operating Loss and Tax Credit Carryforwards Amount, before allocation of valuation allowances, of deferred tax assets attributable to deductible operating loss carryforwards and deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards. Automotive equipment on operating leases (Increase) Decrease in Asset Subject To Or Available For Operating Lease Net Current The (increase) decrease in the net current portion of asset subject to or available for operating lease. Exercise price (in dollars per share) Class of Warrant or Right, Exercise Price of Warrants or Rights Carrying Amount of Hedged Items Hedged Liability, Fair Value Hedge Unallocation of Products to Certain Manufacturing Facilities And Other Employee Separation Programs Unallocation of Products to Certain Manufacturing Facilities And Other Employee Separation Programs [Member] Unallocation of Products to Certain Manufacturing Facilities And Other Employee Separation Programs [Member] Financial Instrument Performance Status [Domain] Financial Instrument Performance Status [Domain] Marketable Debt Securities Marketable Securities, Policy [Policy Text Block] Entity Small Business Entity Small Business Principles of Consolidation Consolidation, Policy [Policy Text Block] Transformation Activities Transformation Activities [Member] Transformation Activities [Member] Debt Debt Disclosure [Text Block] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Amendment Flag Amendment Flag Proceeds from termination of leased vehicles Proceeds from Leases Held-for-investment Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Income tax related interest and penalties accrual Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Deferred tax assets Deferred Tax Assets, Gross [Abstract] Corporate Corporate, Non-Segment [Member] Other Other Accrued Liabilities, Current Restricted Stock Awards (RSAs) Restricted Stock Awards (RSAs) [Member] Share instrument which is convertible to stock or an equivalent amount of cash. Depreciation, Amortization and Impairment [Abstract] Depreciation, Amortization and Impairment [Abstract] Depreciation, Amortization and Impairment [Abstract] PSA Warrants Warrants Exercisable Into Fixed Number Of Publicly Traded Shares [Member] Warrants Exercisable Into Fixed Number Of Publicly Traded Shares [Member] Carrying Amount of Investments in Nonconsolidated Affiliates Investments in and Advances to Affiliates [Table Text Block] Restructuring and Other Initiatives Restructuring and Related Activities Disclosure [Text Block] Defined Benefit Plan Disclosure [Line Items] ABO and PBO [Line Items] Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Accrued liabilities Accrued Liabilities, Current [Abstract] Credit card program deferred revenue Credit Card Deferred Revenue Deferred revenue associated with credit card programs recorded at the end of the reporting period. Debt carrying amount and fair value Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] Financial Instruments [Domain] Financial Instruments [Domain] Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Maximum loss exposure amount Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount Capital Commitments Capital Addition Purchase Commitments [Member] Accounts and notes receivable, net Due from Related Parties Weighted-average grant date fair value, forfeited or expired (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options and Non-option Equity Instruments, Forfeitures, Weighted Average Grant Date Fair Value Weighted average fair value as of the grant date of stock options and non-option equity instruments that were not exercised or put into effect as a result of the occurrence of a terminating event. Purchases and expenses Discontinued Operation, Intra-Entity Amounts, Discontinued Operation after Disposal, Expense Derivative Financial Instruments Derivatives, Policy [Policy Text Block] Non-cash property additions – continuing operations Capital Expenditures Incurred but Not yet Paid Subsequent Events Subsequent Events [Text Block] Ignition Switch Recall Litigations Ignition Switch Recall Litigations [Member] Litigations filed related to ignition switch recalls. Foreign currency remeasurement Effective Income Tax Rate Reconciliation, Foreign Currency Remeasurement, Amount Effective Income Tax Rate Reconciliation, Foreign Currency Remeasurement, Amount Marketable Securities [Line Items] Marketable Securities [Line Items] U.S. tax impact on Non-U.S. income and activities Effective Income Tax Rate Reconciliation, U.S. Tax on Non-U.S. Income, Amount The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to repatriation of foreign earnings, unremitted foreign earnings, and U.S. taxes on other non-U.S. income in the period. Estimated potential recovery from taxing authority Loss Contingency, Estimated Potential Recovery From Taxing Authority Estimated potential recovery from the taxing authority. Loss from discontinued operations, net of tax – diluted Net Income (Loss) from Discontinued Operations Available to Common Shareholders, Diluted Equipment on Operating Leases Lessor, Leases [Policy Text Block] Financing Receivable, Credit Quality Indicator [Line Items] Financing Receivable, Credit Quality Indicator [Line Items] Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] Allowance for doubtful accounts and notes receivable Accounts Receivable, Allowance for Credit Loss, Current 2018 Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year Income Statement Location [Domain] Income Statement Location [Domain] Short-term Debt Short-term Debt [Member] 2022 Lessee, Operating Lease, Liability, to be Paid, Year Two Product warranty and related liabilities Policy, Product Warranty, Recall Campaigns and Courtesy Transportation Accrual, Non-current Non-current portion of amount as of the balance sheet date of the aggregate standard product warranty and related liabilities. Does not include the balance for the extended product warranty liability. Automotive and other selling, general and administrative expense Selling, General and Administrative Expense SAIC-GMAC SAIC-GMAC [Member] SAIC-GMAC Automotive Finance Company Limited (formerly known as GMAC-SAIC Automotive Finance Company Limited) Foreign Currency Foreign Exchange Contract [Member] Total Long-term Debt and Lease Obligation, Including Current Maturities 2023 Lessee, Operating Lease, Liability, to be Paid, Year Three Other assets (Note 4; Note 11 at VIEs) Other Assets, Noncurrent Plan Name [Axis] Plan Name [Axis] Dilutive effect of warrants and awards under stock incentive plans (in shares) Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants Capital loss expiration Effective Income Tax Rate Reconciliation, Other Adjustments, Capital Loss Expiration Effective Income Tax Rate Reconciliation, Other Adjustments, Capital Loss Expiration Total cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Income from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Total Assets Total Assets Assets Proposed Settlement Proposed Settlement [Member] Proposed Settlement [Member] Separation Programs in Korea Separation Programs In Korea [Member] Separation Programs In Korea [Member] Takata Passenger-side Airbags Takata Passenger-side Airbags [Member] Takata Passenger-side Airbags Sovereign debt Debt Security, Government, Non-US [Member] Total units outstanding (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Retirement Plan Sponsor Location [Axis] Retirement Plan Sponsor Location [Axis] Defined Benefit Plan, Expected Future Benefit Payments [Abstract] Defined Benefit Plan, Expected Future Benefit Payment [Abstract] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Qualified Plan Qualified Plan [Member] Equipment on Operating Leases Lessor, Operating Leases [Text Block] Automotive Cost of Sales Cost of Sales [Member] Class of Warrant or Right [Axis] Class of Warrant or Right [Axis] Schedule of Income before Income Taxes and Equity Income Schedule of Income before Income Taxes and Equity Income, Domestic and Foreign [Table Text Block] Tabular disclosure of income before income taxes and equity method investment income between domestic and foreign jurisdictions. Units outstanding at beginning of period (in shares) Units outstanding at end of period (in shares) Share Based Compensation Arrangement By Share Based Payment Award Option and Non-option Equity Instruments Outstanding Number Number of options and equity Instruments other than options outstanding, including both vested and non-vested instruments. Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Restricted cash - non-current Restricted Cash and Investments, Noncurrent Total Liabilities Liabilities Income Tax Contingency [Line Items] Income Tax Contingency [Line Items] Financing Receivables, by Credit Quality Indicator [Domain] Internal Credit Assessment [Domain] Carrying Amount Debt and Finance Lease Liabilities Debt and Finance Lease Liabilities Retirement Plan Type [Axis] Retirement Plan Type [Axis] Imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount ABO Defined Benefit Plan, Accumulated Benefit Obligation SGM Norsom SGM Norsom [Member] SAIC GM (Shenyang) Norsom Motors Co., Ltd. Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Cash paid for income taxes and interest Cash Paid for Income Taxes and Interest [Abstract] Cash Paid for Income Taxes and Interest. Level 1 Fair Value, Inputs, Level 1 [Member] Inventories Increase (Decrease) in Inventories Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Period of time for which there are no mandatory contributions for qualified plans Defined Benefit Plan, Period Of Time For Which There Are No Significant Mandatory Funding Requirements For Qualified Plan Period of time for which there are no significant mandatory funding requirements for the qualified defined benefit plan. Weighted-average interest rate Debt, Weighted Average Interest Rate Restricted cash included in Other assets Restricted Cash and Cash Equivalents, Noncurrent Change in other operating assets and liabilities (Note 25) Total Increase (Decrease) in Other Operating Assets and Liabilities, Net Additional Paid-in Capital Additional Paid-in Capital [Member] Less: cumulative dividends on subsidiary preferred stock Preferred Stock Dividends and Other Adjustments Nonoperating Income (Expense) Nonoperating Income (Expense) [Member] GM Cruise GM Cruise Holdings LLC [Member] GM Cruise Holdings LLC [Member] Other operating activities Other Operating Activities, Cash Flow Statement Stock options and RSUs Stock Options and Restricted Stock Units [Member] Stock Options and Restricted Stock Units [Member] Ignition Switch Recall Litigations - Lost Personal Time and Certain Unjust Enrichment Claims Ignition Switch Recall Litigations - Lost Personal Time and Certain Unjust Enrichment Claims [Member] Ignition Switch Recall Litigations - Lost Personal Time and Certain Unjust Enrichment Claims [Member] Sub-prime – FICO score less than 620 FICO Score, Less than 620 [Member] FICO Score, Less than 620 [Member] U.S. capitalized research expenditures Deferred Tax Assets, Capitalized Research Expenditures The tax effect as of the balance sheet date of the amount of the estimated future tax deductions attributable to research and development costs that are expensed in accordance with generally accepted accounting principles but capitalized for income tax purposes. Asset Class [Axis] Asset Class [Axis] Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Option and Non-option Equity Instruments, Granted Net number of option and non-option equity instruments granted to participants. Basic earnings per common share – continuing operations (in dollars per share) Income (Loss) from Continuing Operations, Per Basic Share Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Machinery and Equipment Machinery and Equipment [Member] Credit Quality Indicator [Axis] Internal Credit Assessment [Axis] Common stock shares outstanding Common Stock, Shares, Outstanding Equity in net assets of nonconsolidated affiliates (Note 8) Equity in net assets of nonconsolidated affiliates Equity Method Investments Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Income Taxes [Abstract] Deferred Tax Assets, Net [Abstract] Other plan assets (liabilities), net Defined Benefit Plan Assets and Liabilities Not Measured at Fair Value Other plan assets and liabilities including, cash held by the plans, net of amounts receivable/payable for unsettled security transactions and payable for investment manager fees, custody fees and other expenses. Revolving Credit Facility Revolving Credit Facility [Member] Schedule of Goodwill [Table] Schedule of Goodwill [Table] Variable Interest Entities Variable Interest Entity Disclosure [Text Block] Depreciation Amortization and Impairment of Property Plant and Equipment Depreciation Amortization and Impairment on Property Plant and Equipment [Table Text Block] Tabular disclosure of the amount of depreciation, amortization and impairment of property, plant and equipment directly related to goods produced and sold and services rendered by an entity during the reporting period. Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Property, Plant and Equipment Property, Plant and Equipment [Member] Common stock shares authorized Common Stock, Shares Authorized Total property Property, Plant and Equipment, Gross Earnings (loss) before interest and taxes-adjusted Earnings (loss) before automotive interest and taxes-adjusted Earnings or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investment and net of income or loss attributable to noncontrolling interest, but before adjustments that are not considered part of our core operations, automotive interest expense, corporate interest income, gain or loss on extinguishment of debt and income tax expense or benefit. U.S. federal Deferred Federal Income Tax Expense (Benefit) 2022 Defined Benefit Plan, Expected Future Benefit Payment, Year Two Property Subject to or Available for Operating Lease, Net [Abstract] Property Subject to or Available for Operating Lease, Net [Abstract] Schedule of Segment Reporting Information, by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Axis] Ending funded status Defined Benefit Plan, Funded (Unfunded) Status of Plan Forfeited or expired (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Option and Non-option Equity Instruments, Forfeitures and Expirations Number of shares under option and non-option equity instrument agreements that were either cancelled or expired. Goodwill Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] SGMW SGMW [Member] SAIC GM Wuling Automobile Co., Ltd. Income Statement [Abstract] Income Statement [Abstract] Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Investments Classified by Contractual Maturity Date Investments Classified by Contractual Maturity Date [Table Text Block] Net increase (decrease) in short-term debt Proceeds from (Repayments of) Short-term Debt, Maturing in Three Months or Less Settlements of prior year tax matters Effective Income Tax Rate Reconciliation, Tax Settlement, Amount Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Variable Interest Entity, Primary Beneficiary Variable Interest Entity, Primary Beneficiary [Member] Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Net discount and debt issuance costs Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Use of Estimates in the Preparation of the Financial Statements Use of Estimates, Policy [Policy Text Block] Income Tax Authority [Domain] Income Tax Authority [Domain] Shanghai Automotive Group Finance Company Ltd. Shanghai Automotive Group Finance Company Ltd. [Member] Shanghai Automotive Group Finance Company Ltd. [Member] Percent of Contractual Amount Due Financing Receivable, Revolving, Percent of Total Financing Receivable, Revolving, Percent of Total Schedule of Assumptions Used Defined Benefit Plan, Assumptions [Table Text Block] Consolidated Entities [Axis] Consolidated Entities [Axis] General business credits and manufacturing incentives Effective Income Tax Rate Reconcilation, (Tax Credit) Reversal, Amount Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits (or reversals of expired tax credits). Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits. Percentage of non-US pension benefit obligations related to Canada, United Kingdom and Germany Percentage of Benefit Obligation for Pension Plans of Canada, UK and Germany Percentage of benefit obligation for pension plans of Canada, the United Kingdom and Germany to the total non- U.S. pension benefit obligation. Restructuring Reserve [Roll Forward] Restructuring Reserve [Roll Forward] Automotive China Automotive China [Member] Automotive China [Member] Scenario [Domain] Scenario [Domain] Counterparty Name [Domain] Counterparty Name [Domain] Expenditures for property Expenditures for property Payments to Acquire Property, Plant, and Equipment Consolidation Items [Domain] Consolidation Items [Domain] Warranties issued and assumed in period – recall campaigns Warranties Issued And Assumed In Period, Recall Campaigns Represents the aggregate increase in the liability for accruals for recall campaigns and related liabilities issued during the reporting period. Interest subvention earned on finance receivables Interest Income, Intercompany Transactions Interest Income, Intercompany Transactions Lyft, Inc. Lyft, Inc. [Member] Lyft, Inc. [Member] Goodwill and Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Reconciliation of Cash, Cash Equivalents and Restricted Cash from Balance Sheet to Statement of Cash Flows Reconciliation of Cash, Cash Equivalents and Restricted Cash from Balance Sheet to Statement of Cash Flows [Table Text Block] Tabular disclosure of the reconciliation of cash, cash equivalents and restricted cash from the consolidated balance sheet to the consolidated statements of cash flows. Warranty provision Loss Contingency Accrual Actual return on plan assets Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) Equity income (Note 8) Equity income Income (Loss) from Equity Method Investments General Motors Holdings LLC General Motors Holdings LLC [Member] General Motors Holdings LLC Income before income taxes and equity income Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest 2025 Long-term Debt and Finance Lease Obligations, Maturities, Repayments of Principal in Year Five Long-term Debt and Finance Lease Obligations, Maturities, Repayments of Principal in Year Five Hedging Designation [Axis] Hedging Designation [Axis] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] U.S. and Canada United States and Canada [Member] United States and Canada [Member] Notes Payable, Other Payables Notes Payable, Other Payables [Member] 2026 - 2030 Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years Components of Inventories Schedule of Inventory, Current [Table Text Block] Amended and Restated Master Sale and Purchase Agreement Amended and Restated Master Sale and Purchase Agreement [Member] Amended and Restated Master Sale and Purchase Agreement [Member] Tax benefit Other Comprehensive Income (Loss) before Reclassifications, Tax Entity [Domain] Entity [Domain] Designated as Hedges Designated as Hedging Instrument [Member] Dealer Restructurings, Employee Separations and Supplier Claim Charges Dealer Restructurings, Employee Separations and Supplier Claim Charges [Member] Dealer Restructurings, Employee Separations and Supplier Claim Charges Marketable Securities [Table] Marketable Securities [Table] Schedule of Restructuring and Related Costs Restructuring and Related Costs [Table Text Block] Performing Financial Instruments Performing Financial Instruments [Member] Additional purchase amount Investment Agreement, Performance Agreement, Purchase Obligation Amount Investment Agreement, Performance Agreement, Purchase Obligation Amount Estimated Useful Life in Years Property, Plant and Equipment, Useful Life Property, Plant and Equipment, Net [Abstract] Property, Plant and Equipment, Net [Abstract] Goodwill [Line Items] Goodwill [Line Items] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] PSA Group PSA Group [Member] PSA Group [Member] Korea Wage Litigation - Salaried Korea Wage Litigation - Salaried [Member] Litigation alleging incorrect wage calculation for current and former salaried employees of GM Korea. Total debt Debt and Lease Obligation Cash and cash equivalents Restricted Cash and Cash Equivalents Pension Plan and Other Postretirement Benefits Plan Pension Plan and Other Postretirement Benefits Plan [Member] Pension Plan and Other Postretirement Benefits Plan [Member] Net deferred tax assets Deferred Tax Assets, Net Total available-for-sale debt securities with contractual maturities Debt Securities, Available-for-sale Schedule of Share-based Compensation Activity Share-based Payment Arrangement, Activity [Table Text Block] Private equity and debt investments Private Equity and Debt Funds [Member] Investments held in private equity and debt funds. Finished product, including service parts Inventory, Finished Goods, Net of Reserves Total Financing Receivable, Past Due Share-based Payment Arrangement [Abstract] Share-based Payment Arrangement [Abstract] PATAC PATAC [Member] Pan Asia Technical Automotive Center Co., Ltd. Schedule Of Cash, Cash Equivalents And Marketable Securities [Table] Schedule Of Cash, Cash Equivalents And Marketable Securities [Table] Schedule of cash, cash equivalents and marketable securities balances, including restricted cash and marketable securities. Principal collections and recoveries on finance receivables Proceeds from Collection of Finance Receivables Consolidated Entities [Domain] Consolidated Entities [Domain] Land Land [Member] Operating lease liability Operating Lease, Liability, Current Weighted-average interest rate on outstanding short-term debt Short-term Debt, Weighted Average Interest Rate, at Point in Time Commercial loan funding payable Intercompany Payable Intercompany Payable Class of Financing Receivable [Domain] Class of Financing Receivable [Domain] Purchases of leased vehicles, net Payments to Acquire Leases Held-for-investment Number of safety recalls Litigation Settlement, Number of Safety Recalls Litigation Settlement, Number of Safety Recalls Credit Score, FICO [Axis] Credit Score, FICO [Axis] Finance Receivables [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Other Other Investment [Member] Includes private equity, real estate and absolute return strategies which primarily consist of hedge funds. Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Interest Rate Swap Interest Rate Swap [Member] Stock Incentive Plans Narratives [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract] Cumulative Effect, Period of Adoption, Adjustment Cumulative Effect, Period of Adoption, Adjustment [Member] Other investments, net Other pension investments, net [Member] Other pension investments such as, but not limited to cash equivalents and other short-term investments, derivatives, group annuity contracts, Investment funds, certain private equity and debt investments, real estate and other alternative investments. Intangible Assets, net Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block] Five Year Revolving Credit Facility Due 2023 Five Year Revolving Credit Facility Due 2023 [Member] Five Year Revolving Credit Facility Due 2023 [Member] GMNA GMNA [Member] Represents the GM North America region for segment consolidation. Entity Registrant Name Entity Registrant Name Subsequent Event Type [Domain] Subsequent Event Type [Domain] Marketable Securities [Abstract] Marketable Securities [Abstract] Weighted average discount rate Operating Lease, Weighted Average Discount Rate, Percent Granted Motion to Dismiss Granted Motion to Dismiss [Member] Granted Motion to Dismiss [Member] Total non-current assets Non-current assets Assets, Noncurrent Impairment charges Asset Impairment Charges Eliminations/ Reclassifications Intersegment Eliminations [Member] Weighted-average grant date fair value, Units outstanding at beginning of period (in dollars per share) Weighted-average grant date fair value, Units outstanding at end of period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Option and Non-option Equity Instruments, Weighted Average Grant Date Fair Value The weighted average fair value of nonvested awards on equity-based plans including option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. Equity options and futures contracts Equity Options and Futures Contracts [Member] Equity Options and Futures Contracts Vehicles Vehicles [Member] Curtailments, settlements and other Defined Benefit Plan, Curtailments, Settlements and Other For pension and OPEB plans the amount of increase or decrease in the benefit obligation due to curtailments, settlements and other factors not individually listed. Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code 2024 Long-term Debt and Finance Lease Obligations, Maturities, Repayments of Principal in Year Four Long-term Debt and Finance Lease Obligations, Maturities, Repayments of Principal in Year Four Accrued Liabilities and Other Liabilities [Abstract] Accrued Liabilities and Other Liabilities [Abstract] Balance at beginning of period Balance at end of period Restructuring Reserve Adjustments for New Accounting Pronouncements [Axis] Accounting Standards Update [Axis] Accrued and Other Liabilities Accrued Liabilities and Other Liabilities [Table Text Block] Tabular disclosure of the components of accrued liabilities and other liabilities. Entity Address, Postal Zip Code Entity Address, Postal Zip Code Total deferred tax assets Deferred Tax Assets, Net of Valuation Allowance Adjustments Reconciling Adjustments Includes items that are not part of the normal operating cycle of ongoing operations. Restructuring Type [Axis] Restructuring Type [Axis] Goodwill Goodwill Australia and New Zealand Australia and New Zealand [Member] Australia and New Zealand Income Tax Examination [Table] Income Tax Examination [Table] Curtailments, settlements and other Curtailments, settlements and other (gains) losses, net The aggregate amount of net (gains) losses recognized in net period benefit cost due to settlements, curtailments and other adjustments. Outstanding warrants (in shares) Class of Warrant or Right, Outstanding Honda Motor Co., Ltd Honda Motor Co., Ltd [Member] Honda Motor Co., Ltd [Member] Income taxes payable Increase (Decrease) in Income Taxes Payable GM Financial GM Financial GM Financial [Member] Represents the GM Financial section for segment consolidation. Dividends declared per common share (in dollars per share) Common Stock, Dividends, Per Share, Declared Amount of debt issued Debt Instrument, Face Amount Buildings and Improvements Building and Building Improvements [Member] Other current assets (Note 4; Note 11 at VIEs) Other Assets, Current Asset Class [Domain] Asset Class [Domain] Marketable Securities [Line Items] Investment Holdings [Line Items] Equity (Note 20) Equity [Abstract] Discontinued Operations Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Used vehicles Used Vehicles [Member] Used Vehicles [Member] Deferred revenue Contract with Customer, Liability, Current Provision for loan losses Provision for Loan, Lease, and Other Losses Derivative Contract [Domain] Derivative Contract [Domain] Weighted-average common shares outstanding – diluted (in shares) Weighted-average common shares outstanding – diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Other Income and Expenses [Abstract] Other Income and Expenses [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Rebates available Credit Card Programs Available Rebate Rebate available associated with the credit card programs, net of deferred program revenue at the balance sheet date. Equipment on operating leases Operating Lease, Right-of-use Asset, Gross Operating Lease, Right-of-use Asset, Gross Restructuring Plan [Axis] Restructuring Plan [Axis] Unsecured Debt Unsecured Debt [Member] Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Short-term Debt, Type [Axis] Short-term Debt, Type [Axis] III Substandard [Member] Deferred revenue expected to be recognized Revenue, Remaining Performance Obligation, Amount Revenues from External Customers and Long-Lived Assets [Line Items] Revenues from External Customers and Long-Lived Assets [Line Items] Recently Adopted Accounting Standards and Accounting Standards Not Yet Adopted [Abstract] Accounting Standards Update and Change in Accounting Principle [Abstract] Nonaccrual loans Impaired Financing Receivable, Nonaccrual Impaired Financing Receivable, Nonaccrual Balance at beginning of period Balance at end of period Unrecognized Tax Benefits Counterparty Name [Axis] Counterparty Name [Axis] Common stock, $0.01 par value Common Stock, Value, Issued 2024 Defined Benefit Plan, Expected Future Benefit Payment, Year Four Long-term Debt Long-term Debt [Member] Three Year Revolving Credit Facility April 2021 Three Year Revolving Credit Facility April 2021 [Member] Three Year Revolving Credit Facility April 2021 [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Document Fiscal Year Focus Document Fiscal Year Focus Vehicle, parts and accessories Vehicles and Parts [Member] Vehicles and Parts [Member] Estimated amortization expense, 2022 Finite-Lived Intangible Asset, Expected Amortization, Year Two Non-current Assets Assets, Noncurrent [Abstract] Settlements Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities Beginning benefit obligation Ending benefit obligation Defined Benefit Plan, Benefit Obligation Entity Current Reporting Status Entity Current Reporting Status Short-term debt and current portion of long-term debt (Note 13) GM Financial short-term debt and current portion of long-term debt Debt, Current Capitalized software amortization expense Capitalized Computer Software, Amortization Goodwill and intangible assets, net (Note 10) Goodwill and intangible assets, net Intangible Assets, Net (Including Goodwill) Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Other income Other Income Research and Development Expenditures [Abstract] Research and Development Expense [Abstract] II Special Mention [Member] Common stock number of shares issued Common Stock, Shares, Issued Canada and United Kingdom Canada and United Kingdom [Member] Canada and United Kingdom [Member] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Cash and time deposits Cash And Time Deposits Sum of cash (other than available-for-sale and trading securities) and time deposits. Marketable and Other Securities Cash, Cash Equivalents, and Marketable Securities [Text Block] Total deferred tax liabilities Deferred Tax Liabilities, Net SGM DYPT SGM DYPT [Member] SAIC GM Dong Yue Powertrain Co., Ltd. Segment Reporting [Abstract] Segment Reporting [Abstract] Dividend restriction covenant, amount outstanding Line of Credit Facility, Covenant Terms, Dividend Restrictions, Amount Outstanding Line of Credit Facility, Covenant Terms, Dividend Restrictions, Amount Outstanding Weighted Average Remaining Contractual Terms in years, Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options and Non-option Equity Instruments, Outstanding, Weighted Average Remaining Contractual Terms Weighted average remaining contractual term for option and non-option equity-based awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Dealer cash management balances Dealer Cash Management Dealer Cash Management Debt Instrument [Line Items] Debt Instrument [Line Items] Unrealized gain (loss) on securities Fair Value, Asset (Liability), Recurring Basis, Still Held, Unrealized Gain (Loss) Total stockholders’ equity Stockholders' Equity Attributable to Parent Schedule of contributions to defined benefit pension plans Schedule of contributions to employee benefit plans [Table Text Block] Summarizes contributions to employee benefit plans or direct payments to plan beneficiaries. Non-U.S. income taxed at other than the U.S. federal statutory tax rate Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount Entity Address, City or Town Entity Address, City or Town Fair Value Hierarchy and NAV [Axis] Defined Benefit Plan, Fair Value of Plan Assets by Measurement [Axis] Fair Value Hierarchy and NAV [Axis] Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Employee Severance and Statutory Pension Payments Employee Severance and Statutory Pension Payments [Member] Employee Severance and Statutory Pension Payments [Member] 2025 Lessee, Operating Lease, Liability, to be Paid, Year Five Other assets Other Assets [Member] Payrolls and employee benefits excluding postemployment benefits Accrued Payroll And Employee Benefits Current Carrying value as of the balance sheet date of obligations, excluding pension and other postretirement benefits, incurred through that date and payable for perquisites provided to employees pertaining to services received from them, and obligations incurred through that date and payable for employees' services provided. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Financial Instrument [Axis] Financial Instrument [Axis] Technology and intellectual property Intellectual Property [Member] Type of Adoption [Domain] Accounting Standards Update [Domain] Service cost Service And Administrative Cost The actuarial present value of benefits attributed to the pension benefit formula to services rendered by employees during the period and administrative expenses Korea Wage Litigation - Former Subcontract Workers Korea Wage Litigation - Former Subcontract Workers [Member] Korea Wage Litigation - Former Subcontract Workers [Member] Revaluation of investments Reevaluation of Investments Income (Expense) Reevaluation of Investments Income (Expense) Dividends paid Payments of Dividends Less: valuation allowances Deferred tax assets valuation allowance Deferred Tax Assets, Valuation Allowance Variable Interest Entities [Abstract] Variable Interest Entities [Abstract] Variable Interest Entities [Abstract] Foreign currency translation adjustments Defined Benefit Plan, Plan Assets, Foreign Currency Translation Gain (Loss) Estimated amortization expense, 2023 Finite-Lived Intangible Asset, Expected Amortization, Year Three Construction in Progress Construction in Progress [Member] Schedule of Notional Amounts for Derivative Financial Instruments Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block] Investment, Name [Domain] Investment, Name [Domain] Other comprehensive loss, net of tax Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Cash and cash equivalents Cash And Cash Equivalents Line Item [Member] Primary financial statement caption encompassing cash and cash equivalents. Microsoft and other investors Microsoft, General Motors Holdings LLC and Other Investors [Member] Microsoft, General Motors Holdings LLC and Other Investors Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Total current assets Current assets Assets, Current Comprehensive loss attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Earnings Per Share [Abstract] Earnings Per Share [Abstract] Additions, interest accretion and other Restructuring Charges Schedule of Deferred Tax Assets and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Defined benefit plans attributable [Member] Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Disposal Group Name [Domain] Disposal Group Name [Domain] 2016 Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year Estimated amortization expense, 2025 Finite-Lived Intangible Asset, Expected Amortization, Year Five Document Fiscal Period Focus Document Fiscal Period Focus Wholesale receivables funded by GM Financial, net Increase (decrease) in purchases of wholesale receivables, net Increase (decrease) in purchases (collections) of wholesale receivables for the reporting period, net Thereafter Long-term Debt and Finance Lease Obligations, Maturities, Repayments of Principal after Year Five Long-term Debt and Finance Lease Obligations, Maturities, Repayments of Principal after Year Five Effect of foreign currency Allowance for Loan and Lease Losses, Foreign Currency Translation Net income attributable to common stockholders – diluted Net Income (Loss) Available to Common Stockholders, Diluted Pensions (Note 15) Liability, Defined Benefit Pension Plan, Noncurrent GM Financial Receivables Financing Receivable [Policy Text Block] Employer contributions Defined Benefit Plan, Plan Assets, Contributions by Employer Term of leasing arrangements Lessor, Operating Lease, Term of Contract Accrued and Other Liabilities Accrued Liabilities and Other Liabilities [Text Block] Disclosure of components of accrued and other liabilities, including warranty liability. Entity Filer Category Entity Filer Category Common Stock Common Stock [Member] Foreign currency translation adjustments [Member] Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Additional basis differences Basis Difference Related to Fair Value Changes Difference between amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and amount of underlying equity in net assets the reporting Entity has in the investee. This amount represent the portion of basis difference attributable to fair value changes of the investees. Product and Service [Domain] Product and Service [Domain] Weighted-average grant date fair value, granted (in dollars per share) Share Based Compensation Arrangement By Share Based Payment Award Option and Non-option Equity Instruments Grants In Period Weighted Average Grant Date Fair Value The weighted average grant date fair value of options and equity instruments other than options issued during the period, including both vested and nonvested instruments. Financing Receivable, Allowance for Credit Loss [Table] Financing Receivable, Allowance for Credit Loss [Table] Expected volatility rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate GM Financial Consolidation, Subsidiaries or Other Investments, Consolidated Entities, Policy [Policy Text Block] Ignition Switch Recall Litigations - Economic Damage Ignition Switch Recall Litigations - Economic Damage [Member] Ignition switch recall claims seeking recovery for purported compensatory damages. Current income tax expense (benefit) Income Tax Expense (Benefit), Continuing Operations [Abstract] Net plan assets subject to leveling Defined Benefit Plan Fair Value of Plan Assets Measured on Recurring Basis Represents the fair value of plan assets (net of liabilities other than for benefits) measured on a recurring basis using the fair value hierarchy. Excludes plan assets and liabilities not measured at fair value. Cumulative fair value adjustment on discontinued hedging relationships Derivative Liabilities, Fair Value Adjustment on Discontinued Hedging Relationships Derivative Liabilities, Fair Value Adjustment on Discontinued Hedging Relationships Secured Debt Secured Debt [Member] 2021 Lessor, Operating Lease, Payment to be Received, Year One Amounts recorded in the consolidated balance sheets Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract] Non-cash Asset Impairments and Other Charges Non-cash Asset Impairments and Other Charges [Member] Non-cash Asset Impairments and Other Charges [Member] Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Pension and Other Postretirement Plans [Abstract] Defined Benefit Plan, Assumptions Used in Calculations [Abstract] Performance obligation, expected timing of satisfaction, period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Income from continuing operations attributable to common stockholders Net Income (Loss) from Continuing Operations Available to Common Shareholders, Basic GM Financial receivables GM Financial receivables, net of fees Financing Receivable, before Allowance for Credit Loss Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Table Text Block] Transactions with and Balances Related to Nonconsolidated Affiliates Schedule of Related Party Transactions [Table Text Block] Significant Non-cash Investing and Financing Activity Noncash Investing and Financing Items [Abstract] Diluted earnings per share Earnings Per Share, Diluted [Abstract] Rent expense Payments for Rent Net increase (decrease) in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect China JVs China JVs China JVs [Member] China joint ventures. Interest income and other non-operating income, net (Note 19) Total interest income and other non-operating income, net Nonoperating Income (Expense) Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Stock options Share-based Payment Arrangement, Option [Member] Costs and expenses Costs and Expenses [Abstract] Subsequent Events [Abstract] Foreign currency translation adjustments and other Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Employee Severance Employee Severance [Member] U.S. state and local Deferred State and Local Income Tax Expense (Benefit) Ownership [Domain] Ownership [Domain] Expected rate of return on plan assets Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets Cash Paid for Interest (net of amounts capitalized) Interest Paid, Excluding Capitalized Interest, Operating Activities Realization of basis differences in affiliates Effective Income Tax Rate Reconciliation, Realization of Basis Differences in Affiliates, Amount The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to the realization of basis differences in affiliates. Dealer and customer allowances, claims and discounts Dealer And Customer Allowances And Claims And Discounts Current Aggregate carrying value as of the balance sheet date of the liabilities for sales incentives, dealer and distributor related accruals, including marketing and advertising programs. Represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Schedule of Interest Income and Other Non-Operating Income, net Schedule of Other Operating Cost and Expense, by Component [Table Text Block] Payments Policy, product warranty and recall campaigns - Payments Represents the aggregate decrease in the liability for payments made (in cash or in kind) to satisfy claims under the terms of the standard product warranty or related liabilities. Does not include any Increase or Decrease in the liability for payments related to extended product warranties. Total Equity Balance at beginning of period Balance at end of period Stockholders' equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Financing Receivable, Past Due [Line Items] Financing Receivable, Past Due [Line Items] Additional paid-in capital Additional Paid in Capital Estimated amortization expense, 2021 Finite-Lived Intangible Asset, Expected Amortization, Year One Total net sales and revenue (Note 3) Net sales and revenue Net Sales and Revenue Revenues Class of Stock [Axis] Class of Stock [Axis] Cash paid for income taxes, net Income Taxes Paid, Net Employer contributions to defined contribution plans Defined Contribution Plan, Employer Discretionary Contribution Amount New Accounting Pronouncements or Change in Accounting Principle [Table] Accounting Standards Update and Change in Accounting Principle [Table] Accrued liabilities (Note 12) Total accrued liabilities Accrued Liabilities, Current Proceeds from issuance of subsidiary preferred and common stock (Note 20) Proceeds from Issuance of Preferred Stock and Preference Stock Diluted earnings per common share (in dollars per share) Earnings Per Share, Diluted Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] Sales proceeds from investments classified as available-for-sale and sold prior to maturity Proceeds from Sale of Debt Securities, Available-for-sale Schedule of Unrecognized Tax Benefits Roll Forward Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Depreciation expense Depreciation Entity Address, Address Line One Entity Address, Address Line One Proceeds from sale of business Proceeds from Divestiture of Businesses, Net of Cash Divested Entity Emerging Growth Company Entity Emerging Growth Company Provision (benefit) for deferred taxes Total deferred income tax expense (benefit) Deferred Income Tax Expense (Benefit) Major Property Class [Axis] Major Property Class [Axis] Cumulative Amount of Fair Value Hedging Adjustments Derivative Liabilities, Fair Value Adjustment Derivative Liabilities, Fair Value Adjustment Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Maximum Maximum [Member] GM Financial interest, operating and other expenses Operating Costs and Expenses Preferred stock shares authorized Preferred Stock, Shares Authorized Noncontrolling Interests Noncontrolling Interest [Member] Net cash provided by investing activities – discontinued operations (Note 22) Cash Provided by (Used in) Investing Activities, Discontinued Operations Cash dividends paid on common stock Cash dividends paid on common stock Dividends, Common Stock, Cash Class B Preferred Shares Class B Preferred Shares [Member] Class B Preferred Shares [Member] Consolidated Balance Sheet Parenthetical [Abstract] Consolidated Balance Sheet Parenthetical [Abstract] Consolidated Balance Sheet Parenthetical [Abstract] Number of votes per share Common Stock Voting Rights, Number of Votes per Share Number of votes per share that holders of our common stock are entitled to. Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] 2023 Lessor, Operating Lease, Payment to be Received, Year Three Postemployment benefits including facility idling reserves Postemployment Benefits Including Facility Idling Reserves NonCurrent This represents the noncurrent liability recognized in the balance sheet that is associated with other postemployment benefits, resulting from restructuring programs including facility idling reserves. CAD Senior Notes Due 2026 CAD Senior Notes Due 2026 [Member] CAD Senior Notes Due 2026 2017 Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year Other Postretirement Benefits Plan Other Postretirement Benefits Plan [Member] Trading Symbol Trading Symbol Automotive sales and revenue Revenue from Related Parties Accumulated Other Comprehensive Loss [Table] Accumulated Other Comprehensive Income (Loss) [Table] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Restructuring charges and other charges Restructuring, Settlement and Impairment Provisions Interest Income and Other Non-Operating Income Interest Income and Other Non-Operating Income [Member] Interest Income and Other Non-Operating Income [Member] Collateral Derivative, Collateral, Right to Reclaim Securities Subvention receivable Intercompany Receivable Intercompany Receivable Entity Shell Company Entity Shell Company Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] GM Financial Receivables and Transactions Financing Receivables [Text Block] Depreciation, amortization and impairment charges on Property, net Depreciation, amortization and impairment charges on Property The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets and finite-lived intangible assets over the assets' useful lives, as well as impairment charges on tangible and intangible assets. Includes production and non-production related depreciation and amortization. Ignition Switch Recall Litigations - July 2009 Sale Order Ignition Switch Recall Litigations - July 2009 Sale Order [Member] Ignition Switch Recall Litigations - July 2009 Sale Order [Member] Entity Public Float Entity Public Float Document Type Document Type ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Other Other Nonoperating Income (Expense) Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Schedule of Variable Interest Entities Schedule of Variable Interest Entities [Table Text Block] Net sales and revenue Discontinued Operation, Intra-Entity Amounts, Discontinued Operation after Disposal, Revenue Segments [Axis] Segments [Axis] Pensions and Other Postretirement Benefits Retirement Benefits [Text Block] Schedule of Accumulated Other Comprehensive Loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Other comprehensive loss and noncontrolling interests before reclassification adjustment, net of tax and impact of adoption of accounting standards Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest and Impact of Adoption of Accounting Standards Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest and Impact of Adoption of Accounting Standards Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Level 3 Fair Value, Inputs, Level 3 [Member] Guarantor Obligations, Nature [Domain] Guarantor Obligations, Nature [Domain] Product liability Loss Contingency Accrual, Product Liability, Gross Common shares purchased during period Stock Repurchased During Period, Shares Long-term Purchase Commitment, Category of Item Purchased [Domain] Long-term Purchase Commitment, Category of Item Purchased [Domain] Restricted cash - cash equivalents Other Current Assets [Member] Benefits paid Defined Benefit Plan, Plan Assets, Benefits Paid Fair Value of Assets Derivative Asset Due between one and five years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Line of Credit Line of Credit [Member] Warranties issued and assumed in period – product warranty Warranties Issued And Assumed In Period, Product Warranty Represents the aggregate increase in the liability for accruals related to warranty issued during the reporting period. Does not include any increase in the liability for accruals related to extended product warranties. Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Thereafter Lessor, Operating Lease, Payment to be Received, after Year Five Derivative Financial Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Floating Rate Notes Floating Rate Notes [Member] Floating Rate Notes Advertising and Promotion Expenditures [Abstract] Marketing and Advertising Expense [Abstract] Increase in product warranty accrual Standard Product Warranty Accrual, Period Increase (Decrease) Operating income Operating Income (Loss) Settlements and other Defined Benefit Plan, Other nonrecurring pension and other postretirement income or (expense) Other pension or other post retirement income or (expense) items in the period that are infrequent in occurrence or individually insignificant. Non-service pension and OPEB income Pension and Other Postretirement Benefits, Nonoperating Income Pension and Other Postretirement Benefits, Nonoperating Income Severance Costs Severance Costs Commitments and contingencies (Note 16) Commitments and Contingencies Performance period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five In repossession Financing Receivables, In Repossession [Member] Financing receivables that are in repossession Remaining Contractual Term [Abstract] Share Based Compensation Arrangement By Share Based Payment Award Option and Non-Option Equity Instruments Weighted Average Remainaing Contractual Term [Roll Forward] A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. Entity Address, State or Province Entity Address, State or Province Income tax expense at U.S. federal statutory income tax rate Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Product Warranty and Related Liabilities Schedule of policy, product warranty and recall campaigns [Table Text Block] Table which summarizes the activity for policy, product warranty and recall campaigns for reporting periods. Accounts payable (principally trade) Accounts Payable, Current Financial Asset, Period Past Due [Axis] Financial Asset, Period Past Due [Axis] Percent Financing Receivable, including Past Due, Percent Financing Receivable, including Past Due, Percent Cash receipts Discontinued Operation, Amount of Continuing Cash Receipts after Disposal Discontinued Operation, Amount of Continuing Cash Receipts after Disposal Retained earnings Retained Earnings (Accumulated Deficit) Equipment on operating leases, net Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Property, plant and equipment Deferred Tax Liabilities, Property, Plant and Equipment Debt Type [Axis] Debt Type [Axis] Information by type of debt Money market funds Money Market Funds, at Carrying Value Basis differences from reinvested earnings Basis Differences Resulting from Indefinitely Reinvested Earnings Amount of basis differences in investments in foreign subsidiaries and joint ventures as a result of earnings which are deemed indefinitely reinvested outside the United States. Nonqualified Plan Nonqualified Plan [Member] Fair value of stock incentive awards vested Total Fair Value of Options and Non-Option Equity Instruments Vested During Period The total fair value of options and non-option equity instruments that vested during the period. Operating loss and tax credit carryforwards not subject to expiration Operating Loss and Tax Credit Carryforwards, Not Subject to Expiration The sum of the tax effects as of the balance sheet date of the amount of excesses of ordinary or capital tax deductions over income and excess tax credits in a year which cannot be used on the tax returns in the current year but can be carried forward to reduce taxable income or income taxes payable in a future year not subject to expiration, for which there must be sufficient tax-basis income to utilize a portion or all of the carryforward amount to realize the deferred tax asset. Gain on derivative instruments Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Asset Impairments, Sales Allowances, Inventory Provisions and Other Charges Asset Impairments, Sales Allowances, Inventory Provisions and Other Charges [Member] Asset Impairments, Sales Allowances, Inventory Provisions and Other Charges Income Taxes Income Tax, Policy [Policy Text Block] Hedging Designation [Domain] Hedging Designation [Domain] Debt Type [Domain] Debt Type [Domain] [Domain] for Debt Type [Axis] U.S. government and agencies US Treasury and Government [Member] Other investing activities Payments for (Proceeds from) Other Investing Activities Consolidated [Abstract] Consolidated [Abstract] 2023 Long-term Debt and Finance Lease Obligations, Maturities, Repayments of Principal in Year Three Long-term Debt and Finance Lease Obligations, Maturities, Repayments of Principal in Year Three Stock based compensation APIC, Share-based Payment Arrangement, Increase for Cost Recognition Series F Preferred Stock Series F Preferred Stock [Member] Automotive Automotive net sales and revenue Revenue from Contract with Customer, Excluding Assessed Tax Nature of Operations and Basis of Presentation [Abstract] Nature of Operations and Basis of Presentation [Abstract] Nature of Operations and Basis of Presentation Geographical [Domain] Geographical [Domain] Non-operating pension settlement charge Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement 0-to-30 days Not Past Due [Member] Not Past Due [Member] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Non-U.S. Deferred Foreign Income Tax Expense (Benefit) Earnings per share (Note 21) Earnings Per Share, Basic and Diluted [Abstract] Proceeds borrowed Proceeds from Long-term Lines of Credit Near-prime – FICO score 620 to 679 FICO Score, 620 to 679 [Member] FICO Score, 620 to 679 [Member] Number of states Loss Contingency, Number of States Loss Contingency, Number of States Entity Voluntary Filers Entity Voluntary Filers Senior Notes Due 2031 Senior Notes Due 2031 [Member] Senior Notes Due 2031 Residual value of leased assets Operating Lease, Residual Value of Leased Asset Accrued liabilities and Other liabilities Accrued Liabilities, Current and Other Liabilities, Noncurrent [Member] Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered and aggregate carrying amount, as of the balance sheet date, of noncurrent obligations not separately disclosed in the balance sheet. Noncurrent liabilities are expected to be paid after one year (or the normal operating cycle, if longer). Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Credit Facility [Axis] Credit Facility [Axis] Fair Value Debt Instrument, Fair Value Disclosure Retail Finance Receivables Delinquency Financing Receivable, Past Due [Table Text Block] Weighted-average assumptions used to determine benefit obligations(a) Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract] Total Lessor, Operating Lease, Payments to be Received Number of jurisdictions Loss Contingency, Number of Jurisdictions Loss Contingency, Number of Jurisdictions Foreign Tax Authority Foreign Tax Authority [Member] Loss from discontinued operations, net of tax Net Income (Loss) from Discontinued Operations Available to Common Shareholders, Basic Retirement Plan Tax Status [Domain] Retirement Plan Tax Status [Domain] Commercial Finance Receivables Credit Quality Financing Receivable Credit Quality Indicators [Table Text Block] Restructuring and Related Activities [Abstract] Restructuring and Related Activities [Abstract] Minimum threshold to recognize the tax benefit for uncertain tax positions Minimum Percentage Threshold To Recognize The Tax Benefit For Uncertain Tax Positions Percentage threshold applied to uncertain tax positions to determine recognition of the tax benefit. If greater than this percentage, the largest amount of the tax benefit will be recognized. Commercial Finance Receivables Commercial Portfolio Segment Commercial Portfolio Segment [Member] Income from continuing operations attributable to common stockholders – diluted Net Income (Loss) from Continuing Operations Available to Common Shareholders, Diluted Revenue Recognition [Abstract] Revenue Recognition [Abstract] Schedule of Equity Income Schedule of equity income [Table Text Block] Tabular disclosure of the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied including gain (loss) on disposition of interest in nonconsolidated affiliates. Marketable debt securities Debt Securities, Available-for-sale, Current [Member] Primary financial statement caption encompassing marketable securities. Stock Incentive Awards Weighted Average Grant Date Fair Value (Per Share) [Roll Forward] Share Based Compensation Arrangement By Share Based Payment Award Option and Non-Option Equity Instruments Weighted Average Grant Date Fair Value [Roll Forward] A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. Weighted-average grant date fair value, settled (in dollars per share) Share Based Compensation Arrangement By Share Based Payment Award Option and Non-option Equity Instruments Settled In Period Weighted Average Grant Date Fair Value The weighted average grant date fair value of options and equity instruments other than options settled during the period. Proceeds from issuance of common stock Proceeds from Issuance of Common Stock Automotive Selling, General and Administrative Expense Selling, General and Administrative Expenses [Member] Financial Asset, Period Past Due [Domain] Financial Asset, Period Past Due [Domain] Property, Plant and Equipment, Net, by Type [Abstract] Property, Plant and Equipment, Net, by Type [Abstract] Available-for-sale marketable securities, liquidations Proceeds from Sale and Maturity of Debt Securities, Available-for-sale Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Floorplan advances Floorplan Advances [Member] Floorplan Advances [Member] Finance receivables more than 30 days delinquent Financing Receivables, Greater than 30 Days Past Due [Member] Financing receivables that are greater than 30 days past due. 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[Member] FAW-GM Light Duty Commercial Vehicle Co., Ltd. [Member] U.S. federal Current Federal Tax Expense (Benefit) Stockholders' Equity Note [Abstract] Stockholders' Equity Note [Abstract] Germany, Spain and South Korea Germany, Spain and South Korea [Member] Germany, Spain and South Korea [Member] Derivative notional amount Derivative, Notional Amount Amortization expense Amortization of Intangible Assets Line of Credit Facility [Table] Line of Credit Facility [Table] Business Group [Axis] Business Group [Axis] Information by reporting groups. Financing interest expense Financing Interest Expense Equity in Net Assets of Nonconsolidated Affiliates Equity Method Investments and Joint Ventures Disclosure [Text Block] Segment Reporting Segment Reporting Disclosure [Text Block] Issuance of subsidiary preferred stock (Note 20) Stock Issued During Period, Value, New Issues Scenario [Axis] Scenario [Axis] Schedule of Projected Benefit Obligations in Excess of Fair Value of Plan Assets Defined Benefit Plan, Plan with Projected Benefit Obligation in Excess of Plan Assets [Table Text Block] Pension and other employee benefit plans Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Pensions Amounts recorded in Accumulated other comprehensive loss Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract] Title of 12(b) Security Title of 12(b) Security Disposal Group Classification [Axis] Disposal Group Classification [Axis] Net Carrying Amount Finite-Lived Intangible Assets, Net Long-Lived Assets Long-Lived Assets Non-current assets Assets for Plan Benefits, Defined Benefit Plan 2022 Lessor, Operating Lease, Payment to be Received, Year Two Total interest expense Automotive interest expense Interest Expense Unrecognized Tax Benefits [Roll Forward] Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Proceeds from sale of stock Sale of Stock, Consideration Received on Transaction Other Stockholders' Equity, Other Depreciation and amortization expense Depreciation and amortization Depreciation, Depletion and Amortization Discontinued Operations Discontinued Operations [Member] Liquidation preference of preferred stock per share (in dollars per share) Preferred Stock, Liquidation Preference Per Share Schedule of Components of Income Tax Expense (Benefit) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Ultium Cells LLC Ultium Cells LLC [Member] Ultium Cells LLC GM Financial net sales and revenue GM Financial net sales and revenue Revenue Not from Contract with Customer Product and Service [Axis] Product and Service [Axis] Deferred income tax assets and liabilities [Line Items] Deferred income tax assets and liabilities [Line Items] Deferred income tax assets and liabilities [Line Items] Retirement Plan Tax Status [Axis] Retirement Plan Tax Status [Axis] Weighted-average period for total unrecognized compensation expense for nonvested equity awards Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Employee benefits excluding postemployment benefits Accrued Employee Benefits Noncurrent Carrying value as of the balance sheet date of obligations, excluding pension and other postretirement benefits, and due beyond one year (or beyond one operating cycle if longer) for perquisites provided to employees pertaining to services received from them. Non-U.S. Non-US [Member] Capitalized Interest and Software [Abstract] Capitalized Interest and Software [Abstract] Capitalized Interest and Software [Abstract] Basis Difference Equity Method Investment, Difference Between Carrying Amount and Underlying Equity Deferred revenue recognized Contract with Customer, Liability, Revenue Recognized Financing Receivable, Allowance for Credit Loss [Roll Forward] Financing Receivable, Allowance for Credit Loss [Roll Forward] Net income attributable to common stockholders Net income attributable to common stockholders Net Income (Loss) Available to Common Stockholders, Basic SAIC Financial Holdings Company SAIC Financial Holdings Company [Member] SAIC Financial Holdings Company [Member] Accounts payable Increase (Decrease) in Accounts Payable Less: allowance for loan losses Allowance for loan losses at beginning of period Allowance for loan losses at end of period Financing Receivable, Allowance for Credit Loss Basic loss per common share – discontinued operations (in dollars per share) Basic loss per common share – discontinued operations (in dollars per share) Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic Share Series G Preferred Shares Series G Preferred Stock [Member] Debt Instrument [Axis] Debt Instrument [Axis] Fair Value Hedges Fair Value Hedging [Member] Total productive material, supplies and work in process Inventory, Work in Process and Raw Materials, Net of Reserves Financing Receivable, Allowance for Credit Loss Financing Receivable, Allowance for Credit Loss [Member] Financing Receivable, Allowance for Credit Loss [Member] Operating Segments Operating Segments [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Class of Stock [Line Items] Class of Stock [Line Items] Fair Value of Liabilities Derivative Liability Litigation Case [Axis] Litigation Case [Axis] IV Subprime [Member] Number of joint ventures engaged in production, import and sale of products Equity Method Investments, Number of Joint Ventures Engaged in Production, Import and Sale of Products Equity Method Investments, Number of Joint Ventures Engaged in Production, Import and Sale of Products Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Nature of Operations and Basis of Presentation Nature of Operations and Basis of Presentation [Text Block] The entire disclosure for the nature of an entity's business, the major products or services it sells or provides and its principal markets, including the locations of those markets as well as the basis of presentation concept. If the entity operates in more than one business, the disclosure also indicates the relative importance of its operations in each business and the basis for the determination (for example, assets, revenues, or earnings). Basis of presentation describes the underlying basis used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS). Operating Activities [Domain] Operating Activities [Domain] State and local tax expense Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Research and development expenditures Research and Development Expense PBO Defined Benefit Plan, Pension Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Projected Benefit Obligation Nonconsolidated VIE Variable Interest Entity, Not Primary Beneficiary [Member] Subsequent Event Subsequent Event [Member] Securitization notes payable Securitization notes payable [Member] Debt issued through securitization transactions. Equipment on Operating Leases, net [Abstract] Equipment on Operating Leases, net [Abstract] Equipment on Operating Leases, net [Abstract] Restructuring Plan [Domain] Restructuring Plan [Domain] Proceeds from issuance of preferred stock Proceeds from Issuance of Convertible Preferred Stock Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Revenue Recognition Revenue [Policy Text Block] Operating cash flows Related Party Net Cash Provided By Used In Operating Activities The net cash provided by (used in) operating activities resulting from transactions with related parties. Product Warranty and Related Liabilities [Roll Forward] Movement in the Aggregate Standard Product Warranty and Related Liabilities [Roll Forward] Reconciliation of the aggregate standard product warranty and related liabilities balance from the beginning of a period to the end of a period. Service period Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period Repayments of debt Repayments of Senior Debt Operating lease liabilities Operating Lease, Liability, Noncurrent Estimated amortization expense, 2024 Finite-Lived Intangible Asset, Expected Amortization, Year Four GM Korea GM Korea [Member] GM Korea [Member] Defined benefit plans Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Leased vehicle subvention earned Intercompany Transactions, Leased Vehicle Subvention Income Intercompany Transactions, Leased Vehicle Subvention Income TDR's Financing Receivable, Troubled Debt Restructuring Percentage recognized as pension expense in the first year Percentage Recognized as Pension Expense in the First Year An expected return on plan asset methodology is utilized to calculate future pension expense for certain significant funded benefit plans. A market-related value of plan assets methodology is also utilized that averages gains and losses on the plan assets over a period of years to determine future pension expense. The element represents the percentage recognized of the difference between the fair value of assets and the expected calculated value in the first year. Current Assets Assets, Current [Abstract] Credit Score, FICO [Domain] Credit Score, FICO [Domain] Cash flows from investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Financing Receivable, Allowance for Credit Loss [Line Items] Financing Receivable, Allowance for Credit Loss [Line Items] Comprehensive income attributable to stockholders Comprehensive Income (Loss), Net of Tax, Attributable to Parent Dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Preferred stock par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Schedule of Effective Income Tax Rate Reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Legal Entity [Axis] Legal Entity [Axis] City Area Code City Area Code Government and agency debt securities US and Sovereign Treasury and Government [Member] This category includes investments in debt securities issued by the United States Department of the Treasury, US Government Agencies, US Government-sponsored Enterprises, and Sovereign Governments. Such securities may include treasury bills (short-term maturities - one year or less), treasury notes (intermediate term maturities - two to ten years), and treasury bonds (long-term maturities - ten to thirty years), debt securities issued by the Government National Mortgage Association (Ginnie Mae) and debt securities issued by the Federal National Mortgage Association (Fannie Mae) or the Federal Home Loan Mortgage Corporation (Freddie Mac). Dealer Restructuring and Employee Separation Payments Dealer Restructuring and Employee Separation Payments [Member] Dealer Restructuring and Employee Separation Payments Depreciation and impairment of Equipment on operating leases, net Depreciation and Impairment of Equipment on Operating Leases, Net Depreciation and Impairment of Equipment on Operating Leases, Net Income Tax Authority [Axis] Income Tax Authority [Axis] Document Period End Date Document Period End Date Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Plans with ABO in Excess of Plan Assets [Abstract] Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Abstract] Indirect Tax Matters Indirect Tax Matters [Member] Loss contingencies related to indirect tax matters. Net income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Deferred income tax assets and liabilities [Table] Deferred Income Tax Assets and Liabilities [Table] Deferred Income Tax Assets and Liabilities [Table] Schedule of Revenue by Major Source Disaggregation of Revenue [Table Text Block] Reclassification adjustment, net of tax Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax SAIC-GMF Leasing Co., Ltd. SAIC-GMF Leasing Co., Ltd. [Member] SAIC-GMF Leasing Co., Ltd. [Member] Valuation of Long-Lived Assets Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Stellantis N.V. Stellantis N.V. [Member] Stellantis N.V. Other comprehensive loss and noncontrolling interests before reclassification adjustment, net of impact of adoption of accounting standards Other Comprehensive Income (Loss), before Reclassifications, before Tax Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Purchase of common stock Amount of common stock purchased during period Stock Repurchased During Period, Value Other financing activities Proceeds from (Payments for) Other Financing Activities Cover [Abstract] Cover [Abstract] Other comprehensive loss before reclassification adjustment, net of tax and impact of adoption of accounting standards Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Plan assets measured at net asset value Defined Benefit Plan Fair Value of Plan Assets Measured Using Net Asset Value Represents the fair value of plan assets using net asset value. Excludes plan assets and liabilities not measured at fair value. Dividends received Proceeds from Equity Method Investment, Distribution SGM DY SGM DY [Member] SAIC GM Dong Yue Motors Co., Ltd. Nonconsolidated Affiliates Equity Method Investee [Member] Amount of lease agreements not yet commenced Lessor, Operating Lease, Lease Not yet Commenced, Amount Lessor, Operating Lease, Lease Not yet Commenced, Amount Service cost Defined Benefit Plan, Service Cost Interest Income and Other Non-Operating Income Other Income and Other Expense Disclosure [Text Block] 2021 Long-term Debt and Finance Lease Obligations, Repayments of Principal in Next Twelve Months Long-term Debt and Finance Lease Obligations, Repayments of Principal in Next Twelve Months Dealer network, customer relationships and other Customer Relationships [Member] Summarized Financial Data for Nonconsolidated Affiliates Summarized Financial Data of Equity Method Investees [Table Text Block] Tabular disclosure of aggregated summarized financial data for equity-method investees for the reporting period, including but not limited to, balance sheet, income statements etc. Automotive and other cost of sales Cost of Goods and Services Sold 2022 Long-term Debt and Finance Lease Obligations, Maturities, Repayments of Principal in Year Two Long-term Debt and Finance Lease Obligations, Maturities, Repayments of Principal in Year Two Total costs and expenses Costs and Expenses Equipment Leased to Other Party Equipment Leased to Other Party [Member] Equity Components [Axis] Equity Components [Axis] Number of filed claims Number of pending claims Loss Contingency, Pending Claims, Number Licensing agreements income Licensing Income, Nonoperating Licensing Income, Nonoperating Restricted cash - current Restricted Cash and Investments, Current Equipment on operating leases, net (Note 7; Note 11 at VIEs) Operating Lease, Right-of-use Asset, Noncurrent Operating Lease, Right-of-use Asset, Noncurrent Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Total deferred tax assets before valuation allowances Deferred Tax Assets, Gross Receivables [Abstract] Receivables [Abstract] Minimum Minimum [Member] Years of service Defined Benefit Pension Plan, Number of Years of Service For U.S. and Canadian hourly employees hired prior to specified dates, represents the required number of years of service, before normal retirement age, to be eligible for supplemental benefits. Balance Sheet Location [Domain] Balance Sheet Location [Domain] Schedule of Debt Instruments [Table] Schedule of Short-term and Long-term Debt [Table] Schedule of Short-term and Long-term Debt [Table] Thailand THAILAND ABO Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Accumulated Benefit Obligation Schedule of Cash Flow, Supplemental Disclosures Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Australia, New Zealand, Thailand and India Australia, New Zealand, Thailand and India [Member] Australia, New Zealand, Thailand and India Defined Benefit Plan, Plan Assets, Category [Domain] Defined Benefit Plan, Plan Assets, Category [Domain] Equity Common and preferred stocks Defined Benefit Plan, Equity Securities [Member] Net loss attributable to noncontrolling interests Net loss attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] Amortization of net actuarial losses Defined Benefit Plan, Amortization of Gain (Loss) Mortgage and asset-backed Asset-backed Securities [Member] Schedule of amounts recorded in the consolidated balance sheets Schedule of Amounts Recognized in Balance Sheet [Table Text Block] Entity Interactive Data Current Entity Interactive Data Current Net periodic pension and OPEB (income) expense Defined Benefit Plan, Net Periodic Benefit Cost (Credit) U.S. UNITED STATES Schedules of Fair Value of Plan Assets by Asset Class and Target Allocations Schedule of Allocation of Plan Assets [Table Text Block] Net sales and revenue Revenues [Abstract] Settled (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Option and Non-option Equity Instruments, Exercised Number of option and non-option equity instruments exercised by participants. Stockholders' Equity and Noncontrolling Interests Stockholders' Equity Note Disclosure [Text Block] Recoveries Financing Receivable, Allowance for Credit Loss, Recovery Supplier Related Charges and Employee Separation Charges Supplier Related Charges and Employee Separation Charges [Member] Supplier Related Charges and Employee Separation Charges [Member] Commodity Commodity Contract [Member] Stock Incentive Plans Share-based Payment Arrangement [Policy Text Block] Second Tranche of Warrants Second Tranche of MLC Warrants [Member] Second tranche of MLC warrants. Non-U.S. Current Foreign Tax Expense (Benefit) Amount awarded to other party Litigation Settlement, Amount Awarded to Other Party Class of Warrant or Right [Domain] Class of Warrant or Right [Domain] Derivative [Table] Derivative [Table] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Real estate investments Defined Benefit Plan, Real Estate [Member] Income Tax Examination [Line Items] Income Tax Examination [Line Items] Revenue and others for Reportable Segment [Abstract] Segment Reporting Information, Revenue for Reportable Segment [Abstract] 2021 Defined Benefit Plan, Expected Future Benefit Payment, Year One Revolving Financing Receivable, Revolving Advertising and Promotion Expenditures Advertising Cost [Policy Text Block] Retirement Plan Type [Domain] Retirement Plan Type [Domain] Pension and OPEB income, net Pension and Other Postretirement Benefits Cost (Reversal of Cost) Adjustments to pre-existing warranties Policy, product warranty and recall campaigns - preexisting adjustments Represents the aggregate Increase or Decrease in the liability during the reporting period for accruals related to preexisting standard product warranties (including adjustments related to changes in estimates) and related liabilities. Does not include any Increase or Decrease in the liability for accruals related to extended product warranties. Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Consolidation Items [Axis] Consolidation Items [Axis] Revenue recognition term of separate and bundled services Revenue Recognition, Separate and Bundled Services, Term Revenue Recognition, Separate and Bundled Services, Term Payment for Pension and Other Postretirement Benefits [Abstract] Payment for Pension and Other Postretirement Benefits [Abstract] Product warranty and related liabilities Policy, Product Warranty, Recall Campaigns and Courtesy Transportation Accrual, Current Current portion of amount as of the balance sheet date of the aggregate standard product warranty and related liabilities. Does not include the balance for the extended product warranty liability. Not Designated as Hedges Not Designated as Hedging Instrument [Member] GMI GMI [Member] GMI [Member] Accrued liabilities Accrued Liabilities [Member] Accounts and notes receivable (net of allowance of $224 and $201) Accounts Receivable, after Allowance for Credit Loss, Current Miscellaneous Deferred Tax Assets, Other Non-U.S. Foreign Plan [Member] Maximum maturity period for highly liquid securities Maximum maturity period for highly liquid securities Maximum original maturity period threshold for securities that are considered highly liquid. 'P90D' represents the reported fact of 90 days. Undistributed earnings of nonconsolidated affiliates, net Income (Loss) from Equity Method Investments, Net of Dividends or Distributions Foreign Currency Transactions and Translation Foreign Currency Transactions and Translations Policy [Policy Text Block] Lease receipts under operating leases Operating Leases, Future Minimum Payments Receivable [Abstract] Disposal Group, Disposed of by Sale, Not Discontinued Operations Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] Payments Payments for Restructuring Due in one year or less Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Document Transition Report Document Transition Report Deferred income tax expense (benefit) Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Restricted cash included in Other current assets Restricted Cash and Cash Equivalents, Current Level 2 Fair Value Level 2 Fair Value, Inputs, Level 2 [Member] Prior Financing Receivable, Originated, More than Five Years before Current Fiscal Year Financial Guarantee Financial Guarantee [Member] Accounting Standards Update 2016-13 Accounting Standards Update 2016-13 [Member] GM Financial receivables, net (Note 5; Note 11 at VIEs) Financing Receivable, after Allowance for Credit Loss, Current Subsequent Event [Line Items] Subsequent Event [Line Items] Other liabilities Other Liabilities [Member] Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption [Axis] Credit Facility [Domain] Credit Facility [Domain] Litigation Case [Domain] Litigation Case [Domain] Basic earnings per common share (in dollars per share) Earnings Per Share, Basic Unrecognized tax benefit that would favorably affect effective tax rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Cash payments to GM Financial Intersegment Eliminations, Subvention Paid Intersegment Eliminations, Subvention Paid 31-to-60 days Financing Receivables, 31 to 60 Days Past Due [Member] Financing receivables that are more than 30 days past due but fewer than 61 days past due. Services and other Services and Other [Member] Services and Other [Member] Expected option life Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Interest expense Interest Expense [Table Text Block] Schedule of interest expense for all debt for the reporting periods Financial Instrument Performance Status [Axis] Financial Instrument Performance Status [Axis] Entity File Number Entity File Number Non-current liabilities Liability, Defined Benefit Plan, Noncurrent GM Financial receivables, net (Note 5; Note 11 at VIEs) GM Financial receivables, net of fees - non-current Financing Receivable, after Allowance for Credit Loss, Noncurrent Weighted-average remaining lease term Operating Lease, Weighted Average Remaining Lease Term Intercompany Transactions Schedule of Intercompany Transactions [Table Text Block] Schedule of Intercompany Transactions [Table Text Block] Net amount recorded Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position Increase to maximum borrowing capacity Line of Credit Facility, Increase (Decrease), Net Cash flows from operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] 2024 Lessor, Operating Lease, Payment to be Received, Year Four Loss from discontinued operations, net of tax (Note 22) Loss from discontinued operations, net of tax Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Disposal Groups, Including Discontinued Operations Disposal Groups, Including Discontinued Operations [Table Text Block] Common stock dividends declared Dividends, Common Stock Net prior service (cost) credit Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax Reasonably possible loss Loss Contingency, Range of Possible Loss, Portion Not Accrued Compensation expense Share-based Payment Arrangement, Expense Number of plaintiffs Loss Contingency, Number of Plaintiffs Remeasurement decrease due to mortality assumptions Defined Benefit Plan, Remeasurements, Mortality Amount of gain (loss) related to change in benefit obligation resulting from changes in mortality assumptions. Other joint ventures Other joint ventures [Member] Other nonconsolidated affiliates other than Automotive China joint ventures. Automotive net sales and revenue Revenue from Contract with Customer, Including Assessed Tax Balance Sheet Location [Axis] Balance Sheet Location [Axis] Disposal Group Name [Axis] Disposal Group Name [Axis] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Document Annual Report Document Annual Report Revisions to estimates and effect of foreign currency Restructuring Reserve, Accrual Adjustment including Foreign Currency Amount of any reversal and other adjustment made during the period to the amount of a previously accrued liability for a specified type of restructuring cost including foreign currency translation adjustments, excluding adjustments for costs incurred during the period and costs settled during the period. Ignition Switch Recall Litigations - Contingently Issuable Shares Ignition Switch Recall Litigations - Contingently Issuable Shares [Member] Ignition Switch Recall Litigations - Contingently Issuable Shares [Member] Special Tools Tools, Dies and Molds [Member] Property Subject to or Available for Operating Lease, by Major Property Class [Table] Property Subject to or Available for Operating Lease, by Major Property Class [Table] Category of Item Purchased [Axis] Category of Item Purchased [Axis] GM Financial Receivables Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Retirement Benefits [Abstract] Retirement Benefits [Abstract] Purchases of finance receivables, net Payments to Acquire Finance Receivables Subsequent Event [Table] Subsequent Event [Table] Automotive Automotive [Member] Represents the Automotive section for segment consolidation Less: accumulated depreciation Operating Lease, Right-of-use Asset, Accumulated Depreciation Operating Lease, Right-of-use Asset, Accumulated Depreciation Noncontrolling interests Stockholders' Equity Attributable to Noncontrolling Interest Korea Wage Litigation - Hourly Korea Wage Litigation - Hourly [Member] Litigation related to Ordinary Wage regulation for current and former hourly employees of GM Korea. Litigation-related liability and tax administrative matters Estimated Litigation Liability Components of expense Pension and Other Postretirement Benefits Cost (Reversal of Cost) [Abstract] Deconsolidation loss Deconsolidation, Gain (Loss), Amount Number of employees in the case Number of Employee in the Case Number of employee involved in the case related to which supreme court rendered its decision. Non-cash Accelerated Depreciation Non-cash Accelerated Depreciation [Member] Non-cash Accelerated Depreciation [Member] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Litigation Status [Axis] Litigation Status [Axis] Capitalized software Capitalized Computer Software, Net Corporate and other debt securities Defined Benefit Plan, Debt Security [Member] Accounts receivable Increase (Decrease) in Accounts Receivable Two Billion Dollar Revolving Credit Facility Two Billion Dollar Revolving Credit Facility [Member] Two Billion Dollar Revolving Credit Facility [Member] Warranties, dealer and customer allowances, claims and discounts Deferred Tax Assets; Warranties, Allowances, Claims, Discounts Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from warranty reserves, dealer and customer allowances, claims and discounts. Business Group [Domain] Business Group [Domain] [Domain] for Information by reporting groups. Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Fair value of GM Financial receivables Receivables, Fair Value Disclosure Total Liabilities and Equity Liabilities and Equity Loss Contingencies [Line Items] Loss Contingencies [Line Items] Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Income Taxes Income Tax Disclosure [Text Block] Total non-current liabilities Non-current liabilities Liabilities, Noncurrent Reductions in tax positions due to lapse of statutory limitations Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations Hedging Relationship [Axis] Hedging Relationship [Axis] GM Financial receivables, net Financing receivable, net Financing Receivable, after Allowance for Credit Loss Deferred tax liabilities Deferred Tax Liabilities, Gross [Abstract] Automotive China JVs Automotive China Joint Ventures [Member] Automotive China joint ventures. Potentially dilutive securities (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Net derivative liability Derivative Liability, Defined Benefit Plan Derivative Liability, Defined Benefit Plan Number of interests in other joint ventures Equity Method Investments, Number of Interests in Other Joint Ventures Equity Method Investments, Number of Interests in Other Joint Ventures Total current income tax expense Current Income Tax Expense (Benefit) Debt Instrument [Line Items] Line of Credit Facility [Line Items] SGMS SGMS [Member] SAIC General Motors Sales Co., Ltd. MLC GUC Trust MLC GUC Trust [Member] MLC GUC Trust [Member] Additions to prior years' tax positions Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Additions to current year tax positions Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Equity Component [Domain] Equity Component [Domain] Equity Method Investment, Summarized Financial Information [Abstract] Equity Method Investment, Summarized Financial Information [Abstract] Postretirement benefits other than pensions Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Postretirement Benefits Schedule of Expected Net Benefit Payments Schedule of Expected Benefit Payments [Table Text Block] Gunsan Korea Plant Gunsan Korea Plant [Member] Gunsan Korea Plant [Member] SAIC SAIC [Member] Shanghai Automotive Industry Corporation Property, net (Note 9) Total property, net Property, Plant and Equipment, Net Entity Tax Identification Number Entity Tax Identification Number Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Foreign currency translation adjustments Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation Gain (Loss) Stock Incentive Plans Share-based Payment Arrangement [Text Block] Interest Rate Contract Interest Rate Contract [Member] Net income attributable to stockholders Net Income (Loss) Attributable to Parent SGM SGM [Member] SAIC General Motors Corp., Ltd. Schedule of Variable Interest Entities [Table] Schedule of Variable Interest Entities [Table] Inventories Inventory Disclosure [Text Block] Brands Trade Names [Member] Current Fiscal Year End Date Current Fiscal Year End Date Retirement Plan Sponsor Location [Domain] Retirement Plan Sponsor Location [Domain] Finance lease liabilities Finance Lease, Liability Amount petitioned to be distributed to unitholders Litigation Settlement, Amount Petitioned to be Distributed to Unitholders Litigation Settlement, Amount Petitioned to be Distributed to Unitholders Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Cash Equivalents [Abstract] Cash and Cash Equivalents [Abstract] Shanghai OnStar Shanghai Onstar [Member] Shanghai OnStar Telematics Co., Ltd. GM Parent Company [Member] Warranty balance at beginning of period Warranty balance at end of period Policy, Product warranty and Recall campaigns - Accrual Amount as of the balance sheet date of the aggregate standard product warranty and related liabilities. Does not include the balance for the extended product warranty liability. Financing Receivable, Credit Quality Indicator [Table] Financing Receivable, Credit Quality Indicator [Table] I Internal Investment Grade [Member] Deferred revenue Contract with Customer, Liability, Noncurrent Period past due threshold for suspending accrual of finance charge income Maximum Period Past Due before Suspension of Accrual of Finance Charge Income Maximum period past due before the accrual of finance charge income is suspended. 2020 Financing Receivable, Year One, Originated, Current Fiscal Year Supplemental Cash Flow Information [Abstract] Supplemental Cash Flow Information [Abstract] Cruise Cruise Cruise [Member] Cruise [Member] Restructuring cost incurred to date Restructuring and Related Cost, Cost Incurred to Date Operating loss and tax credit carryforwards subject to expiration Operating Loss and Tax Credit Carryforwards, Subject to Expiration The sum of the tax effects as of the balance sheet date of the amount of excesses of ordinary or capital tax deductions over income and excess tax credits in a year which cannot be used on the tax returns in the current year but can be carried forward to reduce taxable income or income taxes payable in a future year subject to expiration, for which there must be sufficient tax-basis income to utilize a portion or all of the carryforward amount to realize the deferred tax asset. Finance lease liabilities, Fair Value Finance Lease Liabilities, Fair Value Disclosure Finance Lease Liabilities, Fair Value Disclosure Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Benefits paid Defined Benefit Plan, Benefit Obligation, Benefits Paid Accounts payable Due to Related Parties Property, Plant and Equipment Property, Plant and Equipment [Table Text Block] Annual dividend rate Preferred Stock, Dividend Rate, Percentage Available under credit facility agreements(b) Line of Credit Facility, Remaining Borrowing Capacity Fair Value of Plan Assets Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Plan Assets Gross Carrying Amount Finite-Lived Intangible Assets, Gross Total recorded in Accumulated other comprehensive loss Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax Less: accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Net actuarial loss Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax Plans with PBO in Excess of Plan Assets [Abstract] Defined Benefit Plan, Pension Plan with Project Benefit Obligation in Excess of Plan Assets [Abstract] Hedging Relationship [Domain] Hedging Relationship [Domain] Number of years used for valuation allowance methodology Valuation Allowance Methodology Number Of Years Utilized Number of rolling years of actual and current year results utilized as the primary measure of cumulative losses for purposes of establishing the deferred tax asset valuation allowance. Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] GM Financial GM Financial GM Financial Segment [Member] Represents the GM Financial segment. Effective Income Tax Rate Reconciliation, Amount [Abstract] Effective Income Tax Rate Reconciliation, Amount [Abstract] Other adjustments Effective Income Tax Rate Reconciliation, Other Adjustments, Amount 2019 Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year Subsequent period over which pension expense adjustment is amortized Period Of Time Over Which Pension Expense Adjustment Is Amortized The period of time over which expected expense on pension plan assets is amortized, after the first year. Weighted-average common shares outstanding – basic (in shares) Weighted-average common shares outstanding - basic (in shares) Weighted Average Number of Shares Outstanding, Basic Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Mandatory contributions over the next five years Funding Requirement, Next Five Years Amount of employer's best estimate of contributions expected to be paid to the plan during the next five years beginning after the date of the latest statement of financial position. Schedule of Fair Value Hedging Instruments Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] Ownership [Axis] Ownership [Axis] Accrued and other liabilities Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Cash Flow Hedges Cash Flow Hedging [Member] Plan Scenario, Plan [Member] Loss Contingencies [Table] Loss Contingencies [Table] Investment funds Investment Funds [Member] Investment that pools funds from investors to invest in a combination of underlying investments. This category primarily includes fixed income funds, equity funds and fund of hedge funds. Plan Name [Domain] Plan Name [Domain] Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Ownership Percentage Equity Method Investment, Ownership Percentage Revenue Revenue from Contract with Customer [Text Block] Operating right-of-use assets obtained in exchange for lease obligations Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Schedule of Property Subject to or Available for Operating Lease Lessor, Operating Lease, Carrying Value of Assets Subject to Leases [Table Text Block] Lessor, Operating Lease, Carrying Value of Assets Subject to Leases [Table Text Block] Actuarial losses Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) Fair Value Long-term Debt, Fair Value Cash Equivalents and Restricted Cash Cash and Cash Equivalents, Policy [Policy Text Block] Inventories Inventory, Policy [Policy Text Block] Income tax expense (Note 17) Total income tax expense Income tax (expense) Income Tax Expense (Benefit) Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Total Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Property, net and Special Tools Property, Plant and Equipment, Policy [Policy Text Block] Schedule of maturities of long-term debt Schedule of Maturities of Long-term Debt [Table Text Block] Available-for-sale marketable securities, acquisitions Payments to Acquire Marketable Securities Loss on sale of discontinued operations before taxes Equity Method Investment, Realized Gain (Loss) on Disposal Local Phone Number Local Phone Number Foreign currency remeasurement and transaction (gains) losses Foreign currency remeasurement and transaction (gains) losses Foreign Currency Remeasurement and Transaction Gains (Losses) The aggregate realized and unrealized foreign currency transaction gain or loss, net (pretax) or remeasurement gain or loss, net (pretax) included in determining net income for the reporting period. Represents the aggregate of gains or losses, net, on foreign currency transactions that are unsettled as of the balance sheet date, which is therefore an adjustment to reconcile income or loss from continuing operations to net cash provided by or used in continuing operations. Also includes the gains or losses associated with remeasuring foreign currency denominated entities into the functional currency of those entities. Excludes foreign currency transactions designated as hedges of net investment in a foreign entity. Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Cumulative Effect, Period of Adoption [Domain] Cumulative Effect, Period of Adoption [Domain] Loss from discontinued operations Disposal Group, Including Discontinued Operation, Operating Income (Loss) Percentage of pension expense recognized in each of the next four years Percentage of Pension Expense Recognized in the Next Four Years An expected return on plan asset methodology is utilized to calculate future pension expense for certain significant funded benefit plans. A market-related value of plan assets methodology is also utilized that averages gains and losses on the plan assets over a period of years to determine future pension expense. The element represents the percentage recognized of the difference between the fair value of assets and the expected calculated value in each of the next four years after the first year. Derivative [Line Items] Derivative [Line Items] Common Class E Common Class E [Member] Common Class E [Member] Reductions to prior years' tax positions Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions Contract liabilities Contract with Customer, Liability Change in other assets Increase (Decrease) in Other Operating Assets Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Convertible Preferred Stock Convertible Preferred Stock [Member] Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Automotive interest income Interest Income Interest income received from interest bearing assets. The balance includes income earned in return for depositing or lending money that can include income from time deposits, demand deposits, savings accounts, certificates of deposit, money market deposits, bonds, and loans. Aggregate borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Award Type [Axis] Award Type [Axis] Weighted-average assumptions used to determine net expense(a) Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] Discount rate Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Foreign Currency Swaps Foreign Currency Swaps [Member] Foreign Currency Swaps [Member] Property Subject to or Available for Operating Lease [Line Items] Property Subject to or Available for Operating Lease [Line Items] Pension and OPEB Plans Pension and Other Postretirement Plans, Pensions, Policy [Policy Text Block] Retained Earnings Retained Earnings [Member] Preferred stock shares outstanding Preferred Stock, Shares Outstanding Major Property Class [Domain] Major Property Class [Domain] Short-term Debt, Type [Domain] Short-term Debt, Type [Domain] Charge-offs Financing Receivable, Allowance for Credit Loss, Writeoff Schedule of Net Periodic Pension and OPEB expense Schedule of Net Benefit Costs [Table Text Block] Significant Accounting Policies Significant Accounting Policies [Text Block] Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Pending Litigation Pending Litigation [Member] Changes in Benefit Obligations, Plan Assets and Funded Status Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan [Table Text Block] Other Unrecognized Tax Benefits Other Increase (Decrease) This element represents a sum total of additions or reductions to reserves not separately reflected in the tabular roll for the period. Award Type [Domain] Award Type [Domain] Schedule of Future Rental Payments Receivable for Operating Leases Lessor, Operating Lease, Payment to be Received, Fiscal Year Maturity [Table Text Block] Current liabilities Liability, Defined Benefit Plan, Current Non-current Liabilities Liabilities, Noncurrent [Abstract] Allowance for Loan Losses Financing Receivable, Allowance for Credit Loss [Table Text Block] Corporate debt Corporate Debt Securities [Member] Discontinued Operations and Disposal Groups [Abstract] Discontinued Operations and Disposal Groups [Abstract] Planned capital expenditures Other Commitment Property Property, Plant and Equipment Disclosure [Text Block] Litigation Status [Domain] Litigation Status [Domain] Commitments and Contingencies Commitments Contingencies and Guarantees [Text Block] Continuing Operations Continuing Operations [Member] Facility closing Facility Closing [Member] Earnings Per Share Earnings Per Share [Text Block] Pension Plan Pension Plan [Member] Discount rate Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate Finance charge income Interest and Fee Income, Loans, Consumer Current Liabilities Liabilities, Current [Abstract] Cash flows from financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Pension contributions and OPEB payments Payment for Pension and Other Postretirement Benefits Performance-based Employee Stock Options Performance-based Employee Stock Options [Member] Performance-based Employee Stock Options [Member] Income Tax Contingency [Table] Income Tax Contingency [Table] Recently Adopted Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Basic Earnings per Common Share Earnings Per Share, Basic [Abstract] Korea Development Bank Korea Development Bank [Member] Korea Development Bank [Member]